Narendra Ahuja

BIOSKETCH

Narendra Ahuja is a Research Professor in the Dept. of Electrical and Computer Engineering, Beckman Institute, and Coordinated Science Laboratory at University of Illinois at Urbana-Champaign (UIUC). During 2013-2019, he was the Founding Director of Information Technology Research Academy (ITRA), a national initiative started by the Ministry of Electronics and Information Technology, Government of India, to pilot a new model of enhancing the quality of advanced technical and related education across India (https://itra.digitalindiacorporation.in/). His research is in Artificial Intelligence fields of computer vision, pattern recognition, machine learning, image processing and their applications, including on problems in developing societies. He received B.E. (Hons) in Electronics Engineering from BITS, Pilani, M.E. (Distinction) in Electrical Communication Engineering from IISc, and Ph.D. in Computer Science from University of Maryland, College Park, USA. In 1979, he joined UIUC faculty where he was Donald Biggar Willet Professor until starting at ITRA in 2012. 

During 1999-2002, he served as the Founding Director of the first IIIT (IIITs are dedicated to IT and its applications), at Hyderabad (https://www.iiit.ac.in/), which remains the top ranked among over 20 IIITs now.

During 2014-2019, he directed the ITRA research program, aimed at IT enabled societal problem solving through collaborating teams of academic institutions. It was designed to enhance the quality of problem oriented research and technology development, its impact on curriculum, development of sensitivity to societal needs and outreach to deploy the developed solutions. ITRA work in the areas of IT enabled Rural health, Transportation, Disaster management, Sustainability of water resources, and Agriculture and Food was carried out by 16 teams formed by 76 Research groups at 62 institutions, 143 Faculty, 43 renowned scientists and translators as mentors, 167 PhD students and fellows, and 173 interns. It resulted in 21 prototype technologies that are at various stages of transfer through startups/existing industry.

He has co-authored the books Pattern Models (Wiley), Motion and Structure from Image Sequences (Springer-Verlag), and Face and Gesture Recognition (Kluwer); and co-edited the book Advances in Image Understanding (IEEE Press, 1996); and coauthored over 500 papers in journals and conferences. He has supervised research of over 50 PhD, 15 MS and 100 Undergrad students and 10 Postdocs.

He received the 1999 Emanuel R. Piore award of the IEEE, and the 1998 Technology Achievement Award of the International Society for Optical Engineering, and 2008 TA Stewart-Dyer/Frederick Harvey Trevithick Prize of the Institution of Mechanical Engineers, 2008-11 Open Innovation Research Award from Hewlett-Packard, and a 2010 Google Research Award. With his students, he shared Best Paper Awards from several conferences and journals of high repute. He was inducted into University of Maryland’s Computer Science Alumni Hall of Fame (2016), received Distinguished Alumnus Awards from University of Maryland Department of Computer Science (2008) and from BITS, Pilani (2012), and was conferred an Honorary Doctorate from York University, England (2018). He was selected as Associate for 1998-99 and 2006-07 and Beckman Associate for 1990-91 in the UIUC Center for Advanced Study. He received University Scholar Award (1985), Presidential Young Investigator Award (1984), National Scholarship (1967-72), President’s Merit Award (1966), and President’s Scout recognition (1966).

He is a fellow of IEEE, American Assoc for Artificial Intelligence, Intl. Association for Pattern Recognition, Assoc for Computing Machinery, American Assoc for the Advancement of Science, and Intl. Society for Optical Engineering. He has served on editorial boards of 7 journals. He has served or is serving on the Advisory/Governing Boards of IIIT, Hyderabad; IIT BHU; IIIT Delhi; LNMIIT, Jaipur; Microsoft Research Connections, USA; and Microsoft Research, India; Institute of Communication, Information and Perception Technologies, Scuola Superiore, Sant’Anna, Pisa, Italy; and Swiss Innovation Valley.

He is the founding president of Vision Technology, a computer vision technology company. He has received 4 patents in computer vision. His texture models were incorporated by General Electric in their flight simulators, and by CMC Ltd. in a fingerprint identification system deployed at 50 installations in 4 countries. His solutions to two automated railway inspection problems were combined into a product to scan the railcar bodies (http://www.beenavision.com/products_cscview.html). His prototype of a body-neck-eyes move-orient-verge-focus-zoom stereo vision camera system was a motivation for the establishment of companies such as Helpmate Robotics. His invention of the omnifocus camera was demonstrated to the US Congress as an example of breakthroughs that can arise from unplanned basic research. Ahuja’s algorithms for representation of spatial occupancy were acquired by Honeywell for use in their own systems. His Football Videos Analysis software was one of the earliest pilots for automated sports software analysis (featured in TV sports channel ESPN)

VITAE

Education

Ph.D. Computer Science
         University of Maryland, College Park, May 1979
         Thesis title: Mosaic Models for Image Analysis and Synthesis
         Thesis advisor: Professor Azriel Rosenfeld

M.E. Electrical Communication Engineering (with Distinction)
         Indian Institute of Science, Bangalore, India, July 1974
         Thesis title: Machine Recognition of Spoken Digits
         Thesis advisor: Professor B.S. Ramakrishna

B.E. Electronics Engineering (with Honors)
         Birla Institute of Technology and Science, Pilani, India, May 1972
         B.E. Project: Design of a Digital Voltmeter
         Project advisor: Professor Mohi Mukherjee

Awards and Honors

2018Distinguished Alumnus Award of Indian Institute of Science
2018Honorary Doctorate, Dept. of Computer Science, York University, UK
2016University of Maryland Computer Science Alumni Hall of Fame
2014Piero Zamperoni Best Student Paper Award (with A. Kumar), International Conference on Pattern Recognition
2014Best Paper Award (with J. B. Huang, Q. Cai, Z. Liu, and Z. Zhang), Symposium on Eye Tracking Research and Applications
2013Best Paper Award (with Indriyati Atmosukarto, Bernard Ghanem, Shaunak Ahuja, Karthik Muthuswamy), 1st IEEE International Workshop on Computer Vision in Sports
2012Best Paper Award (with J.B. Huang), International Conference on Pattern Recognition
2012Distinguished Alumnus Award of BITS, Pilani
2010Google Research Award
2008TA Stewart-Dyer/Frederick Harvey Trevithick Prize Institution of Mechanical Engineers
2008Open Innovation Research Award of Hewlett-Packard
2008Distinguished Alumnus Award of University of Maryland
2006Best Paper Award from IEEE Transactions on Multimedia
2005-06Associate in the Center for Advanced Study
2002On Incomplete List of Teachers Ranked Excellent by Their Students
1999Donald Biggar Willet Professorship of UIUC College of Engineering
1999UIUC Campus Award for Guiding Undergraduate Research – Honorable Mention
1999Emanuel R. Piore Award of IEEE (Institute of Electrical and Electronics Engineers)
1998Technology Achievement Award of SPIE (International Society for Optical Engineering)
1998Associate in The Center for Advanced Study
1996Fellow of AAAS (American Association for the Advancement of Science)
1996Fellow of ACM (Association for Computing Machinery)
1995Fellow of SPIE (International Society for Optical Engineering)
1994Fellow of IAPR (International Association for Pattern Recognition)
1992Fellow of AAAI (American Association for Artificial Intelligence)
1992Fellow of IEEE (Institute of Electrical and Electronics Engineers)
1990Beckman Associate in the Center for Advanced Study
1985University Scholar Award
1984Presidential Young Investigator Award
University Grants Commission Fellowship for the two-year Master’s studies
National Scholarship for the five-year undergraduate studies
President of India’s Award for merit in High School
President’s (Eagle) Scout

Professional Experience

Teaching: Courses in Computer Vision, Artificial Intelligence, Pattern Recognition, Robotics, Signal Processing, Computer Architecture.
Research: Computer Vision, Image Processing, Robotics, Pattern Recognition, with particular interests in Object Recognition, 3D Computer Vision, Information Integration, Extraction and Representation of Image and Video Structure, Computational Cameras and Photography, Applications to Visual Communication, and Railroad, Biomedical and Sports Videos
Research Enablement: Building teams of institutions focused on specific problems in IT and its Societal Applications

Research Professor7/12-present
University of Illinois at Urbana-Champaign, Department of Electrical and Computer Engineering, Department of Computer Science, Beckman Institute, and Coordinated Science Laboratory

Director8/13-12/19
Information Technology Research Academy, ML Asia, Department of Information Technology, Govt. of India, New Delhi

Donald Biggar Willet Professor9/99-6/12
University of Illinois at Urbana-Champaign, Department of Electrical and Computer Engineering, Department of Computer Science, Beckman Institute, and Coordinated Science Laboratory

Coordinator6/11-7/13
Program Steering and Implementation Group
Information Technology Research Academy, ML Asia, Dept. of Info Tech., Govt. of India, New Delhi

Founding director6/99-3/02
International Institute of Information Technology, Hyderabad, India

Professor8/88 -8/99
University of Illinois at Urbana-Champaign, Department of Electrical and Computer Engineering, Department of Computer Science, Beckman Institute, and Coordinated Science Laboratory

Associate Professor8/84 – 8/88
University of Illinois at Urbana-Champaign, Department of Electrical and Computer Engineering, Department of Computer Science, Beckman Institute, and Coordinated Science Laboratory

Assistant Professor8/79 – 8/84
University of Illinois at Urbana-Champaign, Department of Electrical and Computer Engineering, Department of Computer Science, and Coordinated Science Laboratory

Research Associate5/79 – 8/79
Computer Vision Laboratory, University of Maryland

Faculty Research Assistant5/78 – 5/79
Computer Vision Laboratory, University of Maryland

Graduate Research Assistant8/75 – 5/78
Computer Vision Laboratory, University of Maryland

Scientific Officer9/74 – 7/75
Department of Electronics, Govt. of India

Publications

3 Books Co-Authored, 1 Book Co-Edited, 20 Book Chapters, Over 115 Journal Articles, 350 Conference Papers, 4 Patents

Student Advisees

50+ PhD, 15 MS, 100 Undergrad Research

Professional Societies

IEEE Computer Society, Fellow
Association for Computing Machinery, Fellow
American Association for Artificial Intelligence, Fellow
International Association for Pattern Recognition, Fellow
International Society for Optical Engineering, Fellow
American Association for the Advancement of Science, Fellow
IEEE Technical Committee on Pattern Analysis and Machine Intelligence, Member
IEEE Technical Committee on Robotics, Member
ACM/TEEE-CS Curriculum Task Force, Reviewer
IEEE PAMI EIC Evaluation Committee, Member, 1996
IEEE Emanuel R. Piore Award Committee Member, 1999-2001
IEEE Emanuel R. Piore Award Committee, Chair, 2001-2003
SPIE Technology Achievement Award Committee, Member, 2003-2006
SPIE Engineering Excellence Award Committee, Member, 2004
IAPR Fellow Committee, Member, 2012-
ACM Dissertation Awards Committee, India, Chair, 2012-2014

Editorships

Area Editor: Computer Vision and Image Understanding Journal
Member of Advisory Board: IEEE Trans. on Pattern Analysis and Machine Intelligence Journal
Associate Editor: Journal of Mathematical Imaging and Vision
Associate Editor: Journal of Information Science and Technology
Guest Coeditor, Special Volume on Computer Vision, Artificial Intelligence Jrnl., Vol. 78, No. 1 2, Oct 1995
Member, Editorial Board: Pattern Analysis and Applications Journal
Member, Editorial Board: International Journal of Imaging Systems & Technology
Member, Editorial Advisory Board: Trans on Electrical and Electronic Engr, (Institute of Electrical Engineers of Japan)
Member, IEEE Multimedia Communications Technical Committee

Professional Conferences

IEEE Workshop on Computer Vision, 1987, Program Co-chair.
American Association for Artificial Intelligence Conference, 1987, Member – Program Committee.
IEEE Conference on Computer Vision and Pattern Recognition, 1988, Member – Program Committee.
North American Manufacturing Research Conference, 1988, Member – Organizing Committee.
IEEE Workshop on Interpretation of 3D Scenes, 1989, Invited Panelist.
IEEE Workshop on CAD Based Vision, 1991, Invited Panelist.
IEEE Conference on Computer Vision and Pattern Recognition, 1991, Member – Program Committee.
NSF Workshop on Future Directions in Computer Vision Research, 1991, Invited Speaker.
NSF Workshop on Active Vision Research, 1991, Invited Participant.
IEEE Workshop on Visual Motion, 1991, Member – Program Committee.
IEEE Conference on Computer Vision and Pattern Recognition, 1992, Program Co-chair.
AlS’92 3rd Annual Conference on Al, Simulation and Planning, 1992, Member – Program Committee.
IEEE Conference on Computer Vision and Pattern Recognition, 1992, Invited Panelist.
AAAI International Conference on Artificial Intelligence, 1993, Member – Program Committee.
5th UNB International Artificial Intelligence Symposium, 1993, Member – Advisory Committee.
IEEE Conference on Computer Vision and Pattern Recognition, 1994, Area Chair.
3rd Int. Conf. on Automation, Robotics and Computer Vision, 1994, Member – Int. Advisory Committee.
Int. Conf. on Expert System for Development, 1994, Member – International Advisory Committee.
TENCON, 1994, Member – International Advisory Committee.
International Dedicated Conference on Mechatronics, 1994, Member – Program Committee.
International Conference on Pattern Recognition, 1994, Member – Program Committee.
2nd Asian Conference on Computer Vision, 1995, Member – International Advisory Committee.
Int. Computer Science Conference, ICSC’95, Hong Kong, Member – International Advisory Committee.
Int. Symp. on Automotive Tech. & Automation, Stuttgart, Germany, 1995, Member – Program Committee.
IEEE Computer Vision Symposium, 1995, Member – Program Committee.
IFIP World Congress 1996, Canberra, Australia, Member – Program Committee.
4th Int. Conf. on Automation, Robotics and Computer Vision, 1996, Member – lnt. Advisory Committee.
Dedicated Conf. on Simulation, Diagnosis & Virtual Reality in the Automotive Industry, Florence, Italy, 1996, Member – Program Committee.
3rd Int. Conference on Control, Automation, Robotics & Vision, Singapore, 1996, Member – Int. Advisory Committee.
Int. Conf. on Robotics and Automation, Albuquerque, NM, 1997, Member – Program Committee.
IEEE Conf. on Computer Vision and Pattern Recognition, Puerto Rico, 1997, Member – Program Committee
Int. Conference on Intelligent Information Systems, Bahamas, 1997, Member – Program Committee
TENCON’97, Member – International Advisory Committee
6th Int. Conference on Computer Vision, Bombay, India, Jan. 4-8, 1998, – General Co-Chair
IEEE/ATR Workshop on Computer Vision for Virtual Reality Based Human Comm., Bombay, 1/3/98-CoChair.
3rd Asian Conference on Computer Vision, Hong Kong, 1998, Member – Program Committee
31st Int. Symp. on Automotive Technology & Automation, Dusseldorf, Germany, June 1998, Member – Program Committee
IEEE Int. Conference on Image Processing, Chicago, IL, Oct. 4-7, 1998, Member – Program Committee
Image and Vision Computing New Zealand ’98, Auckland, NZ, Nov. 1998, Member – Program Committee
Int. Conf. on Control, Automation, Robotics & Vision, Singapore, Dec. 1998, Member – Int. Advisory Comm.
7th IEEE Int. Conference on Computer Vision, Kerkyra, Greece, Sept. 1999, Member – Program Committee
4th Int. Conf. Advances in Pattern Recognition & Digital Techniques, Calcutta, 12/99, Member – Advisory Committee
4th Asian Conference on Computer Vision, Taipei, January 8-11, 2000, Member – Program Committee
6th Int. Conf. on Control, Automation, Robotics 7 Vision, Singapore, Dec. 2000, Member, Int. Program Committee
ICMI’2000, 2000, Program Committee Member
Indian Conf. on Computer Vision, Graphics 7 Image Processing, Bangalore, India, 12/00, Int. Advisory Committee
Int. Conf. on Pattern Recognition, Quebec City, Canada, Aug. 2002 – Member, Program Committee
Asian Conferenmce on Computer Vision, 2002, Member, Program Committee
Indian Conf. on Vision, Graphics & IP, Akmedabad, Gujarat, India, Dec. 2002, Member Tech. Program Comm.
IEEE Conf. on Computer Vision and Pattern Recognition, June 2003, Madison, WI, Member-Program Committee
Asian Conference on Computer Vision, Jeju, South Korea, January 2004, Member, Program Committee
European Conference on Computer Vision, Prague, Czech Republic, May 2004, Member, Program Committee
IEEE Conf. on Computer Vision & Pattern Recognition, Washington, DC, June 2004, Member, Program Committee
International Conf. on Pattern Recognition, Cambridge, England, September 2004, Member, Program Committee
IEEE Conf. On Enabling Technologies for Smart Appliances, Hyderabad, India, Jan. 2005, Member, Advisory Panel
IEEE Conf. On Computer Vision and Pattern Recognition, 2004, Member-Program Committee
International Conference on Computer Vision, 2005, Area Chair
11th Asia-Pacific Conference on Communications, Perth, Western Australia, October 2005, Member, Program Committee
International Conference on Pattern Recognition, Hong Kong, August 2006, Member, Program Committee
ICPR’06 Wkshp on Intelligent Computing in Pattern Analysis/Synthesis, Xian, China, Aug. 2006, Member, Program Comm
IEEE Int. Conf. On Automatic Face and Gesture Recognition, Southampton, UK, April 2006, Member, Program Committee
3rd International Conference on Visual Information Engineering, Bangalore, India, Sept. 2006, Member, Program Committee
Pacific-Rim Symposium on Image and Video Technolgy, Hsinchu, Taiwan, December 2006, Member, Program Committee
Indian Conference on Computer Vision, Graphics and Image Processing, Madurai, India, Dec. 2006, Member, Program Committee
IJCAI-2007 Workshop on Multimodal Information Retrieval , Hyderabad, India, Jan. 2007, General Chair
Workshop on Applications of Computer Vision, Austin, TX, Feb. 2007, Co-General Chair
Workshop on Computer Vision for Developing Countries (in conjunction w/ ICCV 2007), Oct. 2007, Member, Program Committee
IEEE Conf. On Computer Vision and Pattern Recognition, Anchorage, Alaska, 2008, Co-General Chair
IMMERSCOM, 2009, Member, Program Committee
Iberian Conference on Pattern Recognition and Image Analysis, Spain, June 2011, Member, Program Committee
21st International Conference on Pattern Recognition, November 2012, Member, Technical Program Committee
IEEE Workshop on Camera Networks and Wide Area Scene Analysis, CVPR, June 2013, Member, Program Committee
IEEE International Workshop on Computer Vision in Sports (CVsports), June 2013, Member, Program Committee
International Conference on Computer Vision, 2015, Area Chair
Asian Conference on Computer Vision, 2016, Area Chair

New Courses Developed and Taught

Introduction to Image Processing and Computer Vision(senior/graduate)
Introduction to Robotics: Sensing, Control and Manipulation (with Mark Spong)(senior/graduate)
Computer Vision(graduate)
Introduction to Robotics (½ semester, with Seth Hutchinson and Mark Spong)(senior/grad, ½ semester)
Robot Sensing (½ semester)(senior/grad, ½ semester)
Pattern Recognition(graduate)
Visualizing & Navigating Knowledge Networks (with N. Contractor & M. Twidale)(senior/graduate)
Seminar: Computer Vision(graduate)

New Laboratories Developed

Computer Vision and Robotics Laboratory in Beckman Institute(Research)
Vision and Robotics Laboratory in Dept. of Electrical and Computer Engineering(Teaching)

LargeTeam-Courses Co-Developed and Co-Taught

Seminar: Introduction to Computational Neuroscience (Coordinator: Bill Greenough)(graduate)
Introduction to Manufacturing Engineering (Coordinators: Tom Conry, Dick Devor)(junior/senior)
Introduction to Cognitive Science (Coordinator: Janet Keller)(senior/graduate)

Courses Taught but not Developed

Introduction to Artificial Intelligence(senior/graduate)
Advanced Artificial Intelligence(graduate)
Introduction to Computer Engineering(sophomore/junior)
Computer Organization and Design(senior/graduate)
Microcomputer Laboratory(senior/graduate)
Probability with Engineering Applications(junior/senior)
Photonics(senior/graduate)
Digital Signal Processing(junior/senior)

Consulting

Scientific Applications International Corporation
United Nations Development Program-Distinguished Scientist Consultant
Illinois Department of Commerce, Springfield, Illinois
US Army Center for Night Vision, Ft. Belvoir, Virginia
Battelle Corporation, Columbus, Ohio
CMC Limited, Secunderabad, India
Corning Incorporated, Corning, New York
A&T Systems, Silver Spring, Maryland
Lockheed Inc., Atlanta, Georgia
Eastman Kodak Co., Rochester, New York
Honeywell Systems, Minneapolis, Minnesota
Westinghouse, Baltimore, Maryland
HRL Laboratories, Los Angeles, California
Rete Ferroviaria Italiana (Italian Railways)

Start-Up Companies

President, Vision Technology, Inc.
One product, the hemispherical camera, is operational at several user locations.

Co-Founder, Auoscout Incorporated
Developing Commercial Sports Software

Technology Transfer

Texture Generation Algorithms used in Flight Simulators developed by General Electric Company
Computational Grouping Algorithms used in Defense Applications Systems developed by Westinghouse
Feature Detection Algorithms used in Map Data Processing Systems developed by Advanced Technology, Inc.
Octree Software Adapted for a Defense Application System Developed by Honeywell
Developed an Automatic, Weld-Evaluation Hardware and Software System for Computer-controlled High-fidelity Welding for Adaptation by General Motors, Caterpillar and MTS Inc.
Assisted U.S. Army Night Vision Laboratory in the Development of a Radar System
Assisted Corning Inc. in Formulating Plans for Automation of their Measurement and Production Systems
Assisted CMC Limited in Developing a Fingerprint Recognition System
Automated Rail Inspection Prototypes used as basis for new products (http://www.railwayage.com/index.php/communications/take-a-look-at-this.html) by two companies: (i) Beena Vision and (ii) Tecnogamma

Advisory Boards

International Institute of Information Technology, Hyderabad, India – Member, Governing Council, and Director International
Microsoft Research Connections Advisory Board, Member
Microsoft India Technical Advisory Board — Member
Institute of Communication, Information and Perception Technologies, Scuola Superiore, Sant’Anna, Pisa, Italy, International Advisory Committee — Member
Indian Institute of Technology BHU, Varanasi – Board of Governors
Indraprashtha Institute of Information Technology, Delhi
LNM Institute of Information Technology, Jaipur

Media Coverage

Channel 15 News, Champaign, July 4, 1990
Daily Illini, July 12, 1990
Engineering Outlook, Winter 1990
Inside Illinois, September 6, 1990
Chicago Tribune, May 20, 1991
San Francisco Examiner, May 27, 1991
Oxnard (CA) Press Courier, September 15, 1991
Optical Materials and Engineering News (OMEN), September 1993, pp. 5-6
Illinois Technograph, October 1993
Photonics Spectra, November 1993, p. 29
Canadian Broadcasting Corporation Science Program “Quirks and Quarks”, December 18, 1993;
Repeated in December 1995
International Science and Technology Satellite News, March 2, 1994
Arlington Heights Daily Herald, l,ake County, Illinois, April 4, 1995
Champaign-Urbana News Gazette, April 20, 1995
IEEE Expert, April 1995, pp. 67-70
Popular Mechanics, August 1995, p. 24
Graduating Senior, September 1995, pp. 15-16
Discover Magazine, November 1995, p. 48
ZDF German Television’s Program Science and Technology, 1995
San Diego Post Tribune, January 3, 1996
Super Interessante Magazine, Vol. 10, No. 1, Brazil, January 1996, p. 10
San Francisco Examiner, January 1996
Aviation Week and Space Technology, January 1996
ASME Mechanical Engineering Magazine, April 1996, p. 14
Boys’ Life, July 1997, p. 12
ASEE PRISM, February 1998, p. 22
Channel 15 News, February 1999
Champaign-Urbana News Gazette, Aug 2001
Inside Illinois
Times of India
India Abroad, 2008
Several Articles in Miscellaneous Singapore Media (2011-13)
TV Channel ESPN, Oct 4, 2014
Singapore Today newspaper
https://nationalcoaltransportation.org/component/rsfiles
http://www.rtands.com/index.php/track-structure/ballast-ties-rail/improving-inspection-of-turnouts.html
Automated Railroad Inspection: https://nationalcoaltransportation.org/component/rsfiles/
Automated Railroad Inspection: http://www.bnsf.com/customers/intermodal-in-action/intermodal-in-action.html
Automated track inspection: http://www.rtands.com/index.php/track-structure/ballast-ties-rail/improving-inspection-of-turnouts.html
Automated train inspection: http://www.railwayage.com/index.php/communications/take-a-look-at-this.html

PUBLICATIONS

Patents

• N. Ahuja and M. Tabb, Multiscale Image Edge and Region Detection Method and Apparatus, U. S. Patent, Issued September 1998.
• R. Dugad and N. Ahuja, Transform Domain Significant Coefficient Digital Image Watermarking Method, U.S. patent Application filed, June 2000.
• H. Hua and N. Ahuja, Method and Apparatus for a High-Resolution and Real-Time Panoramic Camera, Patent Application Filed, November 2001.
• A. Krishnan and N. Ahuja, Imaging Apparatus and Method for Determining Range from Focus and Focus Information, U. S., Patent, Issued September 1995. European Patent issued, October 2001.
• H. Hua and N. Ahuja, Method and Apparatus for a High-Resolution and Real-Time Panoramic Camera, Patent Application Filed, November 2001.
• R. Dugad and N. Ahuja, Transformation of Image Parts in Different domains to Obtain Resultant Image Size Different From Initial Image Size, U.S. Patent, Issued October 2004.

Books Authored

• N. Ahuja and B. Schachter, Pattern Models, Wiley, l983.
• J. Weng, T. S. Huang and N. Ahuja, Motion and Structure from Image Sequences, Springer-Verlag, 1992.
• Ming-Hsuan Yang and N. Ahuja, Face Detection and Hand Gesture Recognition for Vision-Based Human Computer Interaction, Kluwer Academic Publishers, 2001.

Books Edited

• K. Bowyer and N. Ahuja, Advances in Image Understanding: A Festschrift for Azriel Rosenfeld, IEEE Computer Society Press, June 1996.

Book Chapters

• N. Ahuja, Mosaic Models for Textures. A. Rosenfeld (ed.), Image Modeling,Academic Press, 1981, 1-8. (Also appears in Digital Image Processing and Analysis: Vol. 1, R. Chellappa and A. Sawchuk (Eds.), IEEE Computer Society Press, Washington D. C., 1986.)
• N. Ahuja and A. Rosenfeld, Image Models. P. R. Krishnaiah and L. N. Kanal (eds.), Handbook of Statistics, Volume 2, North Holland, l982, 383-397.
• N. Ahuja and S. Swamy, Multiprocessor Pyramid Architectures for Bottom-Up Image Analysis, A. Rosenfeld (ed.), Multiresolution Image Processing and Analysis, Volume 1, Springer-Verlag, 1984, 38-59.
• J. Veenstra and N. Ahuja, Deriving Object Octrees from Images, G. Goos and J. Hartmanis(eds.), Lecture Notes in Computer Science, 206, (same as Proc. 5th Conf. on Foundations of Software Technology and Theoretical Computer Science, December 16-18, 1985, New Delhi, India, editor: S. N. Maheshwari), Springer-Verlag, 1985, 196-211.
• N. Ahuja, Texture Analysis, S. Shapiro (ed.), Encyclopedia of Artificial Intelligence, Wiley, 1987, 1101-1115. (Updated Versions Reprinted in second edition, 1992, 1587-1605.)
• N. Ahuja and M. Tuceryan, Dot Pattern Analysis. S. Shapiro (ed.), Encyclopedia of Artificial Intelligence, Wiley, 1987, 253-256.
• M. Sharma, N. Ahuja and J. Patel, NETRA: An Architecture for a Large Scale Multiprocessor Vision System, L. Uhr (ed.), Parallel Computer Vision, Academic Press, 1987, 87-105.
• A. N. Choudhary, S. Das, N. Ahuja and J. Patel, High Speed Stereo, S. Prasad and R. L. Kashyap (Eds.), Spectral Analysis in One or Two Dimensions, Vedam Books International, 1990, 577-590.
• D. Blostein and N. Ahuja, Shape from Texture: Integrating Texture Element Extraction and Surface Estimation, R. Kasturi and R. C. Jain (Eds.), Computer Vision: Principles, IEEE Computer Society Press, Washington D. C., 1991, 325-343.(Also appears in IEEE Trans. Pattern Analysis and Machine Intelligence, December 1989, 1233-1251.)
• A. N. Choudhary, J. H. Patel and N. Ahuja, Architecture and Performance Evaluation of NETRA, V. K. Prasanna Kumar (Ed.), Parallel Architectures and Algorithms for Image Understanding, Academic Press, 1991, 251-278.
• J. Weng, T. Huang and N. Ahuja, Motion and Structure from Two Perspective Views: Algorithm, Error Analysis, and Error Estimation R. Kasturi and R. C. Jain (Eds.), Computer Vision: Advances and Applications, IEEE Computer Society Press, Washington D. C., 1991,352-377. (Also appears in IEEE Trans. Pattern Analysis and Machine Intelligence, May 1989, 451-476.
• S. Das and N. Ahuja, Integrating Mutilresolution Image Acquisition and Coarse-to-fine Surface Reconstruction from Stereo from Stereo, L. Wolff, S. Shafer and G. Healey (Eds.), Physics Based Vision, Principles and Practice: Radiometry, Jones and Bartlett, 1992, 361-367.
• J. Weng, T. S. Huang and N. Ahuja, Object Recognition by a Self-Organizing Neural Network which Grows Adaptively, Parallel Image Analysis, A. Nakamura, et.al. (ed.), Springer-Verlag, 1992, 32-33.
• N. Ahuja, Computer Vision, McGraw-Hill Encyclopedia of Science and Technology,1995.
• N. Ahuja and R. Charan, Pixel Matching and Motion Segmentation in Image Sequences, Lecture Notes in Computer Science – Recent Developments in Computer Vision, 1035, S. Z. Li, D. P. Mital, E. K. Teoh, and H. Wang(Eds.), Springer-Verlag, 1996, 139-148.
• N. Ahuja, A Transform for Multiscale Image Segmentation, K. Bowyer and N. Ahuja (Eds.), Advances in Image Understanding: A Festschrift for Azriel Rosenfeld,IEEE Computer Society Press, June 1996, 45-64.
• N. Ahuja and R. Charan, Curve Detection in 3D Dot Patterns using Voronois Impact on Modern Science, Voronois Impact on Modern Science, H. Syta and P. Engel (Eds.), National Academy of Sciences of Ukraine, Institute of Mathematics, Book II, 1998, 204-212.
• M. Shaw, N. Ahuja and S. Hutchinson, Coordination, Collaboration, and Control of Multi-Robot Systems, Handbook for Industrial Robotics, 2nd Edition, S. Nof (Ed.), Wiley, 1999,423-437.
• N. Ahuja and S. Sull, Analysis Guided Video Synthesis for Hyper Reality, N. Terashima and J. Tiffin (Eds.), Hyper Reality: The Infrastructure of the Information Society, Routledge, UK, 2001, 43-53.
• M. Singh and N. Ahuja, Edge Measures Using Similarity Regions, Foundations of Image Understanding, L. S. Davis (Ed.), Kluwer, 2002, 241-288.
• I. Atmosukarto, B. Ghanem, M. Saadalla, N. Ahuja, Recognizing Team Formation in American Football, Computer Vision in Sports, Advances in Computer Vision and Pattern Recognition, Springer 2014, 271-291.

Journal Papers

• E. Akbas, N. Ahuja, Low-Level Multiscale Image Segmentation and a Benchmark for its Evaluation, Computer Vision and Image Understanding 199, 103026, 2020.
• S. Zhang, J.-B. Huang, J. Lim, Y. Gong, J. Wang, N. Ahuja, M.-H. Yang, Tracking Persons-of-Interest via Unsupervised Representation Adaptation, International Journal of Computer Vision 128 (1), 96-120, 2020.
• Wei-Sheng Lai, Jia-Bin Huang, Narendra Ahuja and Ming-Hsuan Yang, Fast and Accurate Image Super-Resolution with Deep Laplacian Pyramid Networks, IEEE Transactions on Pattern Analysis and Machine Intelligence, Volume 41 (11), November 2019, 2599-2613
• Y. Li, J. B. Huang, N. Ahuja, and M. H. Yang, Joint Image Filtering with Deep Convolutional Networks,IEEE Transactions on Pattern Analysis and Machine Intelligence 41 (8), 1909-1923, 2019.
• H. Yang and N. Ahuja, Clustering as physically inspired energy minimization, Pattern Recognition (86), Feb 2019, 265-280.
• Y. Li, J. Huang, N. Ahuja and M. Yang, Joint Image Filtering with Deep Convolutional Networks, IEEE Transactions on Pattern Analysis and Machine Intelligence, vol. 41, no. 8, pp. 1909-1923, 1 Aug. 2019.
• X. Wei, Q. Yang, Y. Gong, N. Ahuja and M. Yang, Superpixel hierarchy , IEEE Transactions on Image Processing, vol. 27, no. 10, pp. 4838-4849, Oct. 2018.
• Hart, J. M., S. Wang, M. Moaveni, M. McHenry, E. Tutumluer and N. Ahuja, Machine Vision for Evaluating In-Service Ballast Condition, Technology Digest, TD-17-010, May 2017.
• J. Varadarajan, R. Subramaniam, S. R. Bulo, N. Abuja, O. Lanz, and E. Ricci, Joint Estimation of Human Pose and Conversational Groups from Social Scenes, International Journal of Computer Vision (IJCV), 2017.
• T. Zhang, B. Ghanem, S. liu, C. Xu, and N. Ahuja, Robust Visual Tracking via Exclusive Context Modeling, IEEE Transactions on Cybernetics, Vol. 46, No. 1, pp. 51-63, (2016).
• E. Ergul, N. Arica, N. Ahuja and S Erturk, Clustering through Hybrid Network Architecture with Support Vectors, IEEE Transactions on Neural Networks and Learning Systems, Vol 99, March 2016, 1-13.
• T. Zhang, S. Liu, N. Ahuja, M.-H. Yang and B. Ghanem, Robust Visual Tracking via Consistent Low-Rank Sparse Learning, International Journal of Computer Vision (IJCV), vol. 111, no. 2, pp. 171-190 (2015).
• A. Singh and N. Ahuja, Learning ramp transformation for single image super-resolution, Computer Vision and Image Understanding, vol. 135, pp. 109-125 (2015).
• Q. Yang, J. Tang and N. Ahuja, Efficient and robust specular highlight removal, IEEE Transactions on Pattern Analysis and Machine Intelligence, vol. 37, no. 6, pp. 1304-1311 (2015).
• Q. Yang, N. Ahuja and K-H. Tan, Constant time median and bilateral filtering, International Journal of Computer Vision, vol. 112, No. 3, pp. 307-318 (2015).
• J.-B. Huang, S. B. Kang, N. Ahuja and J. Kopf, Image Completion using Planar Structure Guidance, ACM Transactions on Graphics (Proceedings of SIGGRAPH), 2014
• E. Akbas and N. Ahuja, Low-level Hierarchical Segmentation Statistics of Natural Images, IEEE Transactions on Pattern Analysis and Machine Intelligence (PAMI) (2014).
• H. Yang and N. Ahuja Automatic Segmentation of Granular Objects in Images: Combining Local Density Clustering and Gradient-Barrier Watershed, Pattern Recognition (2014).
• B. Ghanem, N. Ahuja, Modeling dynamic swarms, Computer Vision and Image Understanding, 117(1): 1-11 (2013).
• T. Zhang, B. Ghanem, Si Liu, N. Ahuja Robust Visual Tracking via Structured Multi-Task Sparse Learning, International Journal of Computer Vision (IJCV), Volume: 101, Issue: 2, pp. 367 -383 (2013).
• E. Resendiz, J. M. Hart, and N. Ahuja, Automated Visual Inspection of Railroad Tracks, IEEE Transactions on Intelligent Transportation Systems, vol. 14, no. 2, pp. 751- 760, June 2013.
• Q. Yang, N. Ahuja, Ruigang Yang, Kar-Han Tan, James Davis, Bruce Culbertson, John Apostolopoulos, Gang Wang, Fusion of Median and Bilateral Filtering for Range Image Upsampling, IEEE Transactions on Image Processing (TIP) (2013).
• M. Moaveni, S. Wang, J. M. Hart, E. Tutumluer, and N. Ahuja, Evaluation of Aggregate Size and Shape by Means of Segmentation Techniques and Aggregate Image Processing Algorithms, Transportation Research Record: Journal of the Transportation Research Board, No. 2335, Transportation Research Board of the National Academies, Washington, D.C., pp. 50-59, 2013.
• Xianbiao Shu, Chunyu Gao, N. Ahuja, Aperture access and manipulation for computational imaging, Computer Vision and Image Understanding, 116(2): 222-237 (2012).
• Q. Yang, N. Ahuja, Surface reflectance and normal estimation from photometric stereo, Computer Vision and Image Understanding, 116(7): 793-802 (2012).
• Q. Yang, Kar-Han Tan, N. Ahuja, Shadow Removal Using Bilateral Filtering, IEEE Transactions on Image Processing, 21(10): 4361- 4368 (2012).
• Q. Yang, N. Ahuja, Stereo Matching Using Epipolar Distance Transform, IEEE Transactions on Image Processing, 21(10): 4410- 4419 (2012).
• Q. Yang, S. Wang, N. Ahuja, Ruigang Yang, A Uniform Framework for Estimating Illumination Chromaticity, Correspondence, and Specular Reflection. IEEE Transactions on Image Processing, 20(1): 53-63 (2011).
• Kumar, A., T.G. Rickett, A. Vemula, J.M. Hart, J.R. Edwards, N. Ahuja, and C.P.L. Barkan, Aerodynamic Analysis of Intermodal Freight Trains Using Machine Vision, In: Proceedings of the 9th World Congress on Railway Research, 22-26 May 2011, Lille, France.
• Rickett, T.G., J.M. Hart, J.R. Edwards, A.Kumar, C.P.L. Barkan and N. Ahuja, Monitoring the Aerodynamic Efficiency of Intermodal Train Loading Using Machine Vision. Proceedings of Transportation Research Board Annual Conference. Washington D.C. (January 2011).
• Schlake, B. W.; Todorovic, S.; Edwards, J. R.; Hart, J. M.; Ahuja, N.; Barkan, C. P. L.,Machine vision condition monitoring of heavy-axle load railcar structural underframe components, Proceedings of the Institution of Mechanical Engineers Part F-Journal of Rail and Rapid Transit 224, (F5), 2010, 499-511.
• Chunyu Gao, Hong Hua and N. Ahuja, A Hemispherical Imaging Camera, Computer Vision and Image Understanding, Vol. 114(2): 168- 178, February 2010.
• B. Ghanem and N. Ahuja, Dinkelbach NCUT: An Efficient Framework for Solving Normalized Cuts Problems with Priors and Convex Constraints, International Journal of Computer Vision, 89(1): 40-55, 2010.
• N. Ahuja, Sinisa Todorovic, From Region Based Image Representation to Object Discovery and Recognition, SSPR/SPR 2010, 1-19.
• Tianli Yu, Jiebo Luo, N. Ahuja, Search strategies for shape regularized active contour, Computer Vision and Image Understanding, 113(10): 1053-1063 (2009).
• H. Wang and N. Ahuja, A Tensor Approximation Approach to Dimensionality Reduction, International Journal of Computer Vision, 76:3, March 2008, 217-229.
• S. Todorovic and N. Ahuja, Region Based Hierarchical Image Matching, International Journal of Computer Vision, Vol. 78, No. 1, 2008, 47-66.
• A. Briassouli and N. Ahuja, Integration of Frequency and Space for Multiple Motion Estimation and Shape-Independent Object Segmentation, IEEE Transactions on Circuits, Systems and Video Technology, Vol. 18, No. 5, May 2008, 657-669.
• S. Todorovic and N. Ahuja, Unsupervised Category Modeling, Recognition, and Segmentation in Images, IEEE Transactions on Pattern Analysis and Machine Intelligence, 30(12), 2008, 2158-2174.
• Y.-C. Lai, C. Barkan, J. Drapa, N. Ahuja, J. Hart, P.J. Narayanan, C. V. Jawahar, A. Kumar, L. Milhon, and M.P. Stehly, Machine Vision Analysis of the Energy Efficiency of Intermodal Freight Trains, Journal of Rail and Rapid Transit, 221:353-364, 2007.
• H. Wang, N. Xu, R. Raskar and N. Ahuja, Videoshop: A New Framework for Spatio-Temporal Video Editing in Gradient Domain, Graphical Models, Vol. 69, Issue 1, January 2007, 57-70.
• S. Yi, B. Choi and N. Ahuja, Real-time Omni-directional Distance Measurement with Active Panoramic Vision, International Journal of Control, Automation, and Systems, Vol. 5, No. 2, April 2007, 184-191.
• H. Hua, C. Gao and N. Ahuja, Calibration of an HMPD-Based Augmented Reality System, IEEE Transactions on Systems, Man, and Cybernetics, (Part A: Systems), Vol. 37, No. 3, May 2007, 416-430.
• T. Yu, N. Xu and N. Ahuja, Shape and View Independent Reflectance Map from Multiple Views, International Journal of Computer Vision, Vol. 73, No. 2, June 2007, 123-138.
• A. Briassouli and N. Ahuja, Extraction and Analysis of Multiple Periodic Motions in Video Sequences, IEEE Transactions on Pattern Analysis and Machine Intelligence, Vol. 29, No. 7, July 2007, 1244-1261.
• H. Hua, N. Ahuja and C. Gao, Design Analysis of a High-Resolution Panoramic Camera Using Conventional Imagers and a Mirror Pyramid, IEEE Transactions on Pattern Analysis and Machine Intelligence, Vol. 29, No. 2, 2007, 356-361.
• N. Xu, N. Ahuja and R. Bansal, Object Segmentation Using Graph Cut Based Active Contours, Computer Vision and Image Understanding, Vol. 107, Issue 3, September 2007, 210-224.
• H. Wang, Q. Wu, L. Shi, Y. Yu and N. Ahuja, Out-of-Core Tensor Approximation of Multi-Dimensional Matrices of Visual Data, ACM Transactions on Graphics, Vol. 24, No. 3, 2005, pp. 527-535.
• A. Sehgal, A. Jagmohan and N. Ahuja, Wyner-Ziv Coding of Video: An Error-Resilient Compression Framework, IEEE Transactions on Multimedia, Vol. 6, No. 2, April 2004, 249-258.
• K.-H. Tan, H. Hua and N. Ahuja, Multiview Panoramic Cameras Using Mirror Pyramids, IEEE Transactions on Pattern Analysis and Machine Intelligence, Vol. 26, No. 7, July 2004, 941-946.
• M. Aggarwal and N. Ahuja, Split Aperture Imaging for High Dynamic Range, International Journal on Computer Vision, Vol. 58, No. 1, June 2004, 7-17.
• J.-H. Chuang, N. Ahuja, C.-C. Lin, C.-H. Tsai and C.-H. Chen, A Potential-Based Generalized Cylinder Representation, Computers and Graphics, Vol. 28, 2004, 907-918.
• J. Hart, N. Ahuja, C. Barkan and D. Davis, A Machine Vision System for Monitoring Railcar Health: Preliminary Results, Technology Digest, TD-04-008, June 2004, 1-4.
• R. Dugad and N. Ahuja, A Scheme for Spatial Scalability Using Nonscalable Encoders, IEEE Transactions CSVT, Vol. 13, No. 10, October 2003, 993-999.
• M.-H. Yang, D. Kriegman and N. Ahuja, Detecting Faces in Images: A Survey, IEEE Transactions on Pattern Analysis and Machine Intelligence, January 2002, 34-58.
• M. Aggarwal and N. Ahuja, A Pupil-Centric Model of Image Formation, International Journal of Computer Vision, 48(3), 2002, 195-214.
• M.-H. Yang, N. Ahuja and M. Tabb, Extraction of Motion Trajectories and Its Application to Hand Gesture Recognition, IEEE Transactions on Pattern Analysis and Machine Intelligence, Vol., 24, No. 8, 2002, 1061-1074.
• D. Roth, M.-H. Yang and N. Ahuja, Learning to Recognize Three-Dimensional Objects, Neural Computation, Vol. 14, No. 5, 2002, 1071-1104.
• R. Dugad and N. Ahuja, A Fast Scheme for Image Size Change in the Compressed Domain, IEEE Trans. on Circuits and Sstems for Video Technology, Vol. 11, No. 4, April 2001, 461-474.
• M.-H. Yang, D. Kriegman and N. Ahuja, Face Detection Using Multimodal and Density Modes, Computer Vision and Image Understanding, Vol. 84, October 2001, 1-21.
• N. Srinivasa and N. Ahuja, A Topological and Temporal Correlator Network for Spatiotemporal Pattern Learning, Recognition and Recall, IEEE Transactions on Neural Networks, Vol. 10, No. 2, March 1999, 356-371.
• T. Joshi, N. Ahuja and J. Ponce, Structure and Motion Estimation from Dynamic Silhouettes under Perspective Projection, International Journal of Computer Vision, 31(1), 1999, 31-50.
• S. C. Yoon, K. Ratakonda and N. Ahuja, Low Bit-Rate Video Coding with Implicit Multiscale Image Segmentation, IEEE Transactions on Circuits and Systems for Video Technology, Vol. 9, No. 7, October 1999, 1115-1129.
• C. Debrunner and N. Ahuja, Segmentation and Factorization-Based Motion and Structure Estimation for Long Image Sequences, IEEE Trans. Pattern Analysis and Machine Intelligence, Vol. 20, No. 2, February 1998, 206-211.
• P. Bajcsy and N. Ahuja, Location and Density-Based Hierarchical Clustering, IEEE Trans. on Pattern Analysis and Machine Intelligence, Vol. 20, No. 9, September 1998, 1011-1015.
• J.-H. Chuang and N. Ahuja, An Analytically Tractable Potential Field Model of Free Space and Its Application in Obstacle Avoidance, IEEE Trans. on Systems, Man, and Cybernetics, Vol. 28, No. 5, October 1998, 729-736.
• N. Ahuja and Jen-Hui Chuang, Shape Representation Using a Generalized Potential Field Model, IEEE Trans. Pattern Analysis and Machine Intelligence, Vol. 19, No. 2, February 1997, 169-176.
• M. Tabb and N. Ahuja, Unsupervised Multiscale Image Segmentation by Integrated Edge and Region Detection, IEEE Transactions on Image Processing, Vol. 6, No. 5, May 1997, 642-655.
• J. Weng, Y. Cui and N. Ahuja, Transitory Image Sequences, Asymptotic Properties, and Estimation of Motion and Structure, IEEE Trans. Pattern Analysis and Machine Intelligence, Vol. 19, No. 5, May 1997, 451-464.
• J. Weng, N. Ahuja and T. S. Huang, Learning Recognition and Segmentation Using the Cresceptron, International Journal of Computer Vision, 25(2), 1997, 109-143.
• Z.-P. Liang, H. Pan, R. L. Magin, N. Ahuja and T. S. Huang, Automated Registration of Multimodality Images by maximization of a Region Similarity Measure, International Journal of Imaging Systems and Technology, Vol. 8, 1997, 513-518.
• T. Srikanth and N. Ahuja, Parallel Distributed Detection of Feature Trajectories in Multiple Discontinuous Motion Image Sequences, IEEE Trans. on Neural Networks, Vol. 7, No. 3, May 1996, 594-603.
• S. Das and N. Ahuja, Active Surface Estimation: Integrating Coarse-to-fine Image Acquisition and Estimation from Multiple Cues, Artificial Intelligence, Vol. 83, May 1996, 241-266.
• A. Krishnan and N. Ahuja, Range Estimation from Focus Using a Non-frontal Imaging Camera, Int. Journal of Computer Vision, Vol. 20, No. 3, 1996, 169-185.
• Y. Kitamura, H. Takemura, N. Ahuja and F. Kishino, Colliding Face Detection among 3-D Objects using Octree and Polyhedral Shape Representation, Journal of the Robotics Society of Japan, Vol. 14, No. 5, 1996, 733-742.
• N. Ahuja, A Transform for Multiscale Image Segmentation by Integrated Edge and Region Detection, IEEE Trans. Pattern Analysis and Machine Intelligence, Vol. 18, No. 12, December 1996, 1211-1235.
• X. Hu and N. Ahuja, Necessary and Sufficient Conditions for a Unique Solution of Plane Motion and Structure, IEEE Transactions on Robotics and Automation, Vol. 11, No. 2, April 1995, 304-308.
• N. Ahuja, On Detection and Representation of Multiscale Low-Level Image Structure, ACM Computing Surveys, Vol. 27, No. 3, September 1995, 304-306.
• S. Sull and N. Ahuja, Integrated Matching and Segmentation of Multiple Features in Two Views, Computer Vision, Graphics and Image Processing: Image Understanding, Vol. 62, No. 3, November 1995, 279-297.
• S. Das and N. Ahuja, Performance Analysis of Stereo, Vergence and Focus as Depth Cues for Active Vision, IEEE Trans. Pattern Analysis and Machine Intelligence, Vol. 17, No. 12, December 1995, 1213-1219.
• S. Sull and N. Ahuja, Integrated 3D Analysis and Analysis Guided Synthesis of Flight Image Sequences, IEEE Trans. Pattern Analysis and Machine Intelligence, Vol. 16, No. 4, April 1994, 357-372.
• X. Hu and N. Ahuja, Matching Point Features with Ordered Geometric, Rigidity and Disparity Constraints, IEEE Trans. Pattern Analysis and Machine Intelligence, Vol. 16, No. 10, October 1994, 1041-1049.
• X. Hu and N. Ahuja, Mirror Uncertainty and Uniqueness Conditions for Determining Shape and Motion from Orthographic Projection, Int. Journal of Computer Vision, 13, 3, November 1994, 295-309.
• X. Hu and N. Ahuja, Feature Extraction and Matching as Signal Detection, Int. Journal of Pattern Recognition and Artificial Intelligence, 8, 6, December 1994, 1343-1379.
• S. Das and N. Ahuja, Integrating Coarse-to-fine Image Acquisition and Estimation from Multiple Cues, Sadhana, Vol. 18, Part 2, June 1993, 223-238.
• X. Hu and N. Ahuja, Sufficient Conditions for Double or Unique Solution of Motion and Structure, Computer Vision, Graphics and Image Processing: Image Understanding, September 1993, 161-176.
• J. Weng, N. Ahuja and T. S. Huang, Optimal Motion and Structure Estimation from Two Views, IEEE Trans. Pattern Analysis and Machine Intelligence, September 1993, 864-884.
• X. Hu and N. Ahuja, Motion and Structure Estimation using Long Sequence Motion Models, Journal of Image and Vision Computing, 11, November 1993, 549-569.
• N. Ahuja and A. L. Abbott, Active Stereo: Integrating Disparity, Vergence, Focus, Aperture and Calibration for Surface Estimation, IEEE Trans. Pattern Analysis and Machine Intelligence, October 1993, 1007-1029.
• A. N. Choudhary, J. H. Patel, and N. Ahuja, NETRA: A Hierarchical and Partitionable Architecture for Computer Vision Systems, IEEE Trans. Parallel and Distributed Systems, Vol. 4, No. 10, October 1993, 1092-1104.
• Y. Hwang and N. Ahuja, A Potential Field Approach to Path Planning, IEEE Transactions on Robotics and Automation, Vol. 8, February 1992, 23-32.
• O. Faugeras, J. Mundy, N. Ahuja, C. Dyer, A. Pentland, R. Jain, K. Ikeuchi and K. Bowyer, Why Aspect Graphs Are Not (Yet) Practical for Computer Vision, Computer Vision, Graphics and Image Processing: Image Understanding, March 1992, 212-218.
• J. Weng, T. S. Huang and N. Ahuja, Motion and Structure from Line Correspondences: Closed-form Solution, Uniqueness and Optimization, IEEE Trans. Pattern Analysis and Machine Intelligence, Vol. 14, March 1992, 318-336.
• J. Weng, N. Ahuja and T. S. Huang, Matching Two Perspective Views, IEEE Trans. Pattern Analysis and Machine Intelligence, August 1992, 806-825.
• Y. Hwang and N. Ahuja, Gross Motion Planning – A Survey, ACM Computing Surveys, Vol. 24, No. 3, 1992, 219-292.
• X. Hu and N. Ahuja, Motion Estimation Under Orthographic Projection, IEEE Trans. on Robotics and Automation, December 1991, 848-853.
• J. Weng, N. Ahuja and T. S. Huang, Motion and Structure from Point Correspondences: Planar Surfaces, IEEE Trans. Signal Processing, vol. 39, No. 12, December 1991, 2691-2717.
• S. Srivastava and N. Ahuja, Octree Generation from Object Silhouettes in Perspective Views, Computer Vision, Graphics and Image Processing, January 1990, 68-84.
• D. Blostein and N. Ahuja, A Multiscale Region Detector, Computer Vision, Graphics and Image Processing, January 1989, 22-41.
• N. Ahuja and J. Veenstra, Generating Octrees from Object Silhouettes in Orthographic Views, IEEE Trans. Pattern Analysis and Machine Intelligence, February 1989, 137-149.
• W. Hoff and N. Ahuja, Surfaces from Stereo: Integrating Feature Matching, Disparity Estimation and Contour Detection, IEEE Trans. Pattern Analysis and Machine Intelligence, February 1989, 121-136.
• J. Weng, T. Huang and N. Ahuja, Motion and Structure from Two Perspective Views: Algorithm, Error Analysis, and Error Estimation, IEEE Trans. Pattern Analysis and Machine Intelligence, May 1989, 451-476.
• D. Blostein and N. Ahuja, Shape from Texture: Integrating Texture Element Extraction and Surface Estimation, IEEE Trans. Pattern Analysis and Machine Intelligence, December 1989, 1233-1251.
• N. Ahuja and M. Tuceryan, Extraction of Basic Perceptual Structure in Dot Patterns: Integrating Region, Boundary and Component Gestalt, Computer Vision, Graphics and Image Processing, December 1989, 304-356.
• J. Veenstra and N. Ahuja, Line Drawings of Octree-Represented Objects, ACM Transactions on Graphics, January 1988, 61-75.
• X. Zhuang, T. S. Huang, N. Ahuja and R. M. Haralick, A Simplified Linear Optic Flow-Motion Algorithm, Computer Vision, Graphics and Image Processing, June 1988, 334-344.
• J. Weng, T. Huang and N. Ahuja, 3-D Motion Estimation, Understanding and Prediction from Noisy Image Sequences, IEEE Trans. Pattern Analysis and Machine Intelligence, May 1987, 370-389.
• J. Weng and N. Ahuja, Octrees of Objects in Arbitrary Motion: Representation and Efficiency, Computer Vision, Graphics and Image Processing, August 1987, 167-185.
• N. Ahuja, Efficient Planar Embedding of Trees for VLSI Layouts, Computer Vision, Graphics and Image Processing, May 1986, 189-203.
• N. Ahuja, B. An and B. Schachter, Image Representation Using Voronoi Tessellation, Computer Vision, Graphics and Image Processing, March 1985, 286-295.
• N. Ahuja and S. Swamy, Multiprocessor Pyramid Architectures for Bottom-up Image Analysis, Test and Measurement World, November 1985, 66-76.
• N. Ahuja and C. Nash, Octree Representations of Moving Objects, Computer Vision, Graphics and Image Processing, May 1984, 207-216.
• N. Ahuja and S. Swamy, Multiprocessor Pyramid Architectures for Bottom-Up Analysis, IEEE Trans. Pattern Analysis and Machine Intelligence, July 1984, 463-475.
• H. C. Chen, N. Ahuja and T. S. Huang, Septree Representations of Moving Objects Using Hexagonal Cylinderical Decomposition, Journal of Optical Engineering, September 1984, 531-535.
• N. Ahuja, On Approaches to Polygonal Decomposition for Hierarchical Image Representation, Computer Vision, Graphics and Image Processing, November 1983, 200-214.
• N. Ahuja, Dot Pattern Processing Using Voronoi Neighborhoods, IEEE Trans. Pattern Analysis and Machine Intelligence, May 1982, 336-343.
• N. Ahuja and A. Rosenfeld, Mosaic Models for Textures, IEEE Trans. Pattern Analysis and Machine Intelligence, January 1981, 1-11.
• N. Ahuja, Mosaic Models for Images, 1: Geometric Properties of Components in Cell Structure Mosaics, Information Sciences, 23, March 1981, 69-104.
• N. Ahuja, Mosaic Models for Images, 2: Geometric Properties of Components in Coverage Mosaics, Information Sciences, 23, April 1981, 159-200.
• R. Chellappa, R. L. Kashyap and N. Ahuja, Decision Rules for Choice of Neighbors in Random Field Models of Images, Computer Graphics and Image Processing, l5, April 1981, 301-318.
• N. Ahuja, Mosaic Models for Images, 3: Spatial Correlation in Mosaics, Information Sciences, 24, June 1981, 43-70.
• N. Ahuja and B. Schachter, Image Models, ACM Computing Surveys, December 1981, 373-398.
• B. Schachter and N. Ahuja, A History of Visual Flight Simulation, Computer Graphics World, 3, May 1980, 16-31.
• N. Ahuja, R. M. Haralick and A. Rosenfeld, Neighbor Gray Levels as Features in Pixel Classification, Pattern Recognition, 12, August 1980, 251-260.
• N. Ahuja, T. Dubitzki and A. Rosenfeld, Some Experiments with Mosaic Models for Images, IEEE Trans. Syst., Man, Cyber., 10, November 1980, 744-749.
• B. Schachter and N. Ahuja, Random Pattern Generation Processes, Computer Graphics and Image Processing, 10, June 1979, 95-114.
• N. Ahuja, L. S. Davis, D. L. Milgram and A. Rosenfeld, Piecewise Approximation of Pictures Using Maximal Neighborhoods, IEEE Trans. Comput., C-27, April 1978, 375-379.
• N. Ahuja and A. Rosenfeld, A Note on the Use of Second-Order Gray-Level Statistics for Threshold Selection, IEEE Trans. Syst., Man, Cyber., SMC-8, December 1978, 895-898.

Conference Papers

• Moitreya Chatterjee, Narendra Ahuja, and Anoop Cherian, A Hierarchical Variational Neural Uncertainty Model for Stochastic Video Prediction, IEEE International Conference on Computer Vision (ICCV), 2021. (To Appear)
• Xiaodan Hu and Narendra Ahuja, Unsupervised 3D Pose Estimation for Hierarchical Dance Video, IEEE International Conference on Computer Vision (ICCV), 2021. (To Appear)
• Moitreya Chatterjee, Jonathan Le Roux, Narendra Ahuja, and Anoop Cherian, Visual Scene Graphs for Audio Source Separation, IEEE International Conference on Computer Vision (ICCV), 2021. (To Appear)
• K. Abdiyeva, M. Lukac and N. Ahuja, Remove to Improve, Int. Conf. on Pattern Recognition (ICPR) EDL-AI Workshop, Jan, 2021
• A. Cherian, M. Chatterjee and n. Ahuja, Sound2Sight: Generating Visual Dynamics from Sound and Context, arXiv:2007.12130, 2020, and European Conference on Computer Vision (ECCV), 701-719, 2020.
• K. Abdiyeva, K-H Yap, G. Wang, N. Ahuja and M. Lukac, QL-Net:Quantized-by-Look-Up CNN , Int. Conf. on Control, Automation, Robotics and Computer Vision, Singapore, Nov 18-21, 2018.
• A. Dubey, M. Chatterjee and N. Ahuja, Coreset-Based Neural Network Compression , The European Conference on Computer Vision (ECCV), 2018, pp. 454-470.
• PH Huang, K Matzen, J Kopf, N Ahuja, JB Huang, DeepMVS: Learning Multi-View Stereopsis , IEEE Conference on Computer Vision and Pattern Recognition, June 2018, 2821-2830.
• A.A. Abuolaim, W.K. Leow, J. Varadarajan and N. Ahuja, On the Essence of Unsupervised Detection of Anomalous Motion in Surveillance Videos, International Conference on Computer Analysis of Images and Patterns, 160-171
• J. Varadarajan, R. Subramanian, N. Ahuja, P. Moulin, J.-M. Odobez. Active Online Anomaly Detection using Dirichlet Process Mixture Model and Gaussian Process Classification, IEEE Winter Conference on Applications of Computer Vision (WACV), 615-623, 2017.
• Z. Le, J. Varadarajan, P. N. Suganthan, N. Ahuja, and P. Moulin. Robust Visual Tracking using Oblique Random Forests, Computer Vision and Pattern Recognition (CVPR), 2017.
• Wei-Sheng Lai, Jia-Bin Huang, Narendra Ahuja, and Ming-Hsuan Yang, Deep Laplacian Pyramid Networks for Fast and Accurate Super-Resolution, IEEE Conference on Computer Vision and Pattern Recognition (CVPR), July 2017, 5589-5598.
• W.-S. Lai, J.-B. Huang, Z. Hu, N. Ahuja and M.-H. Yang, A Comparative Study for Single-Image Blind Deblurring, IEEE Conference on Computer Vision and Pattern Recognition (CVPR), Las Vegas, Nevada, June 2016.
• J.-B. Huang, R. Caruana, A. Farnsworth, S. Kelling and N. Ahuja, Detecting Migrating Birds at Night, IEEE Conference on Computer Vision and Pattern Recognition (CVPR), Las Vegas, Nevada, June 2016.
• J.-B. Huang, S. B. Kang, N. Ahuja and J. Kopf, Temporally Coherent Completion of Dynamic Video, ACM Transactions on Graphics (Proceedings of ACM SIGGRAPH Asia), 2016.
• S. Zhang, Y. Gong, J.-B. Huang, J. Lim, J. Wang, N. Ahuja and M.-H. Yang, Tracking Persons-of-Interest via Adaptive Discriminative Features, European Conference on Computer Vision (ECCV), 2016.
• D. Li, W.-C. Hung, J.-B. Huang, S. Wang, N. Ahuja and M.-H. Yang, Unsupervised Visual Representation Learning by Graph-Based Consistent Constraints, European Conference on Computer Vision (ECCV), 2016.
• Y. Li, J.-B. Huang, N. Ahuja and M.-H. Yang, Deep Joint Image Filtering, European Conference on Computer Vision (ECCV), 2016.
• E. Tutumluer, M. Moaveni, J.M. Hart, N. Ahuja, M. McHenry, D.D. Davis, Field Imaging Based Assessment of In-Service Ballast Condition, Proceedings of AREMA 2016 Annual Conference & Exposition, Orlando, Florida, 2016.
• I. Atmosukarto, N. Ahuja and B. Ghanem, Action Recognition using Discriminative Structured Trajectory Groups, Winter Conference on Applications of Computer Vision (WACV), Waikoloa Beach, Hawaii, January 2015.
• J.-B. Huang, A. Singh and N. Ahuja, Single Image Super-Resolution from Transformed Self-Exemplars, IEEE Conference on Computer Vision and Pattern Recognition (CVPR), Boston, MA, June 2015.
• T. Zhang, S. Liu, C. Xu, S. Yan, B. Ghanem, N. Ahuja and M.-H. Yang, Structural Sparse Tracking, IEEE Conference on Computer Vision and Pattern Recognition (CVPR), Boston, MA, June 2015.
• E. Ricci, J. Varadarajan, S. Ramanathan, N. Ahuja and O. Lanz, Uncovering Interactions and Interactors: Joint Estimation of Head, Body Orientation and F-formations from Surveillance Videos, IEEE International Conference on Computer Vision (ICCV) , Santiago, Chile, December 2015.
• A. Kumar and N. Ahuja, On the Equivalence of Moving Entrance Pupil and Radial Distortion for Camera Calibration, IEEE International Conference on Computer Vision (ICCV), Santiago, Chile, December 2015.
• Recognizing Team Formation in American Football. I. Atmosukarto, B. Ghanem, M. Saadalla, N. Ahuja. To appear in Computer Vision in Sports, Springer 2015.
• A. Singh and N. Ahuja, Super-Resolution Using Sub-band Self-Similarity, Asian Conference on Computer Vision (ACCV), Singapore, 2014.
• A. Heili, J. Varadarajan, B. Ghanem, N. Ahuja, J-M. Odobez, Improving Head and Body Pose Estimation through Semi-supervised Manifold Alignment, ICIP, Paris, France, October 2014.
• A. Kumar and N. Ahuja, Generalized Radial Alignment Constraint for Camera Calibration, International Conference on Pattern Recognition (ICPR), Stockholm, Sweden, August 2014.
• A. Kumar and N. Ahuja, Non-frontal Camera Calibration using Focal Stack Imagery, International Conference on Pattern Recognition (ICPR), Stockholm, Sweden, August 2014.
• A. Singh and N. Ahuja, Sub-band Energy Constraints for Self-Similarity Based Super-Resolution, International Conference on Pattern Recognition (ICPR), Stockholm, Sweden, August 2014.
• A. Kumar and N. Ahuja, Generalized Pupil-Centric Imaging and Analytical Calibration for a Non-frontal Camera, Computer Vision and Pattern Recognition (CVPR), Columbus, Ohio, June 2014.
• X. Shu, F. Porikli, N. Ahuja, Robust Orthonormal Subspace Learning: Efficient Recovery of Corrupted Low-rank Matrices, Computer Vision and Pattern Recognition (CVPR), Columbus, Ohio, June 2014.
• A. Singh, F. Porikli, N. Ahuja, Super-Resolving Noisy Images, Computer Vision and Pattern Recognition (CVPR), Columbus, Ohio, June 2014.
• T. Zhang, K. Jia, C. Xu, Y. Ma, N. Ahuja, Partial Occlusion Handling for Visual Tracking via Robust Part Matching, Computer Vision and Pattern Recognition (CVPR), Columbus, Ohio, June 2014.
• X. Shu, J. Yang, N. Ahuja, Non-local Compressive Sampling Recovery, International Conference on Computational Photography (ICCP), May 2014
• J.-B. Huang, Q. Cai, Z. Liu, N. Ahuja, and Z. Zhang, Towards Accurate and Robust Cross-Ratio based Gaze Trackers Through Learning from Simulation. ACM Symposium on Eye Tracking Research & Applications (ETRA), 2014.
• J. Varadarajan, I. Atmosukarto, S. Ahuja, B. Ghanem and N. Ahuja. Automated Playbook Generation in Football Through Videos. MIT Sloan Sports Analytics Conference, 2014.
• T. Zhang, B. Ghanem, S. Liu, C. Xu, N. Ahuja, Low-Rank Sparse Coding for Image Classification, IEEE International Conference on Computer Vision (ICCV), Sydney, Australia, December 2013.
• J.-B. Huang, J. Kopf, N. Ahuja, and S. B. Kang, Transformation Guided Image Completion, Proceedings of IEEE Conference on International Conference on Computational Photography, April 19-21, 2013.
• A. Kumar, N. Ahuja. A Generative Focus Measure With Application to Omnifocus Imaging. International Conference on Computational Photography (ICCP). April 2013, Harvard, Boston, US
• J. Varadarajan, I. Atmosukarto, S. Ahuja, B. Ghanem, N. Ahuja, A Topic Model Approach to Represent and Classify American Football Plays, British Machine Vision Confernece (BMVC), 2013.
• T. Zhang, B. Ghanem, Changsheng Xu and N. Ahuja, Object Tracking by Occlusion Detection via Structured Sparse Learning, CVsports 13, Workshop on Computer Vision in Sports, Portland, OR, June 28, 2013.
• I. Atmosukarto, B. Ghanem, Shaunak Ahuja, K. Muthuswamy, and N. Ahuja,Automatic Recognition of Offensive Team Formation in American Football Plays, CVsports 13, IEEE International Workshop on Computer Vision in Sports, Portland, OR, June 28, 2013.
• H. Yang and N. Ahuja, Rotation- Invariant Texture Recognition by Rotation Compensation and Wavelet Analysis, Proceedings of the IEEE International Conference on Image Processing, Melbourne, Australia, Sept. 17, 2013.
• A. Singh and N. Ahuja, Single Image Super-Resolution using Adaptive Domain Transformation, Proceedings of the IEEE International Conference on Image Processing, Melbourne, Australia, Sept. 17, 2013.
• A. Kumar, J. M. Hart, and N. Ahuja, Motion-Based Background Subtraction and Panoramic Mosaicing for Freight Train Analysis, Proceedings of the IEEE International Conference on Image Processing, Melbourne, Australia, Sept. 18, 2013.
• A. Singh and N. Ahuja, On Stochastic Gradient Descent and Quadratic Mutual Information for Image Registration, Proceedings of the IEEE International Conference on Image Processing, Melbourne, Australia, Sept. 18, 2013.
• B. Ghanem, T. Zhang and N. Ahuja, Robust Video Registration Applied to Field-Sports Video Analysis, International Conference on Acoustic, Speech and Signal Processing (ICASSP), Kyoto, Japan, March 2012.
• T. Zhang, B. Ghanem and N. Ahuja, Robust Multi-Object Tracking via Cross-Domain Contextual Information for Sports Video Analysis, International Conference on Acoustic, Speech and Signal Processing (ICASSP), Kyoto, Japan, March 2012.
• H.-T. Cheng, N. Ahuja, Exploiting nonlocal spatiotemporal structure for video segmentation, Computer Vision and Pattern Recognition (CVPR) 2012, Providence, RI, June 2012.
• T. Zhang, B. Ghanem, S. Liu and N. Ahuja, Robust Visual Tracking via Multi-Task Sparse Learning, Computer Vision and Pattern Recognition (CVPR), Providence, RI, June 2012.
• A. Singh, N. Ahuja and P. Moulin, Online Learning with Kernels: Overcoming the Growing Sum Problem, IEEE Workshop on Machine Learning for Signal Processing (MLSP 2012), Santander, Spain, September 2012.
• T. Zhang, B. Ghanem, Si Liu, N. Ahuja, Low-Rank Sparse Learning for Robust Visual Tracking, ECCV, 2012, Florence, Italy, October 2012.
• A. Singh and N. Ahuja, Exploiting Ramp Structures for Improving Optical Flow Estimation, International Conference on Pattern Recognitions (ICPR 2012), Tsukuba, Japan, November 2012.
• I. Atmosukarto, B. Ghanem, N. Ahuja, Trajectory-based Fisher Kernel Representation for Action Recognition in Videos, ICPR 2012, Tsukuba, Japan, November 2012.
• Linchao Bao, Yibing Song, Q. Yang, N. Ahuja, An Edge-preserving Filtering Framework for Visibility Restoration, International Conference on Pattern Recognition (ICPR), Tsukuba, Japan, November 2012.
• M. Nam, N. Ahuja, Learning Human Preferences to Sharpen Images, ICPR 2012 Tsukuba, Japan, November 2012.
• J.-B. Huang, N. Ahuja, Saliency Detection Via Divergence Analysis: A Unified Perspective, ICPR 2012, Tsukuba, Japan, November 2012.
• T.G. Rickettt, J.M. Hart, J.R. Edwards, A. Kumar, C.P.L. Barkan and N. Ahuja, Monitoring the Aerodynamic Efficiency of Intermodal Train Loading Using Machine Vision, Proceedings of Transportation Research Board Annual Conference, Washington, D.C., January 2011.
• A. Kumar, T.G. Rickett, A. Vemula, J.M. Hart, J.R. Edwards, N. Ahuja and C.P.L. Barkan, Aerodynamic Analysis of Intermodal Freight Trains Using Machine Vision, Proceedings of 9th World Congress on Railway Research, Lille, France, May 2011.
• T.G. Rickett, A. Kumar, J.M. Hart, J.R. Edwards, C.P.L. Barkan and N. Ahuja, Machine Vision Analysis of Intermodal Loading Efficiency on Heavy-Haul Railroads, Proceedings of International Heavy Haul Association Conference, Calgary, Canada, June 2011.
• J.M. Hart, L.F. Molina, E. Resendiz, J.R. Edwards, N. Ahuja and C.P.L. Barkan, Development of a Machine Vision System for the Inspection of Heavy-Haul Railway Turnout and Track Components, Proceedings of International Heavy Haul Association Conference, Calgary, Canada, June 2011.
• X. Shu and N. Ahuja, Imaging via Three-dimensional Compressive Sampling (3DCS), International Conference on Computer Vision, Barcelona, Spain, November 2011.
• Molina Camargo, L.F., E. Resendiz, J.R. Edwards, J.M. Hart, C.P.L. Barkan and N. Ahuja. 2011. Condition Monitoring of Railway Turnouts and Other Track Components Using Machine Vision. In: Proceedings of the Transportation Research Board 90th Annual Meeting, Washington, D.C, January 2011.
• Mert Dikmen, E. Akbas, T. S. Huang, N. Ahuja, Pedestrian Recognition with a Learned Metric, ACCV (4) 2010, 501-512.
• Q. Yang, Liang Wang, N. Ahuja, A constant-space belief propagation algorithm for stereo matching, Computer Vision and Pattern Recognition (CVPR) 2010, San Francisco, CA, June 2010.
• Q. Yang, S. Wang, N. Ahuja, SVM for edge-preserving filtering, Computer Vision and Pattern Recognition (CVPR) 2010, San Francisco, CA, June 2010.
• E. Resendiz, L. Molina, J. Hart, J. Edwards, S. Sawadisavi, N. Ahuja and C. Barkan, Development of a Machine Vision System for Inspection of Railway Track Components, Proc. 12th World Conference on Transport Research (WCTR), July 2010.
• B. Ghanem and N. Ahuja, Sparse Coding of Linear Dynamical Systems with an Application to Dynamic Texture Recognition, International Conference on Pattern Recognition (ICPR), Istanbul, Turkey, August 2010.
• E. Akbas and N. Ahuja, Low-level Image Segmentation Based Scene Classification, International Conference on Pattern Recognition (ICPR), Istanbul, Turkey, August 2010.
• X. Shu and N. Ahuja, Hybrid Compressive Sampling via a New Total Variation TVL1, European Conference on Computer Vision, Crete, Greece, September 2010.
• Q. Yang, S. Wang, N. Ahuja, Real-Time Specular Highlight Removal Using Bilateral Filtering, ECCV 2010, Crete, Greece, September 2010.
• B. Ghanem, N. Ahuja, Maximum Margin Distance Learning for Dynamic Texture Recognition, ECCV 2010, Crete, Greece, September 2010.
• S. Shetty, N. Ahuja, Supervised and Unsupervised Clustering with Probabilistic Shift, ECCV 2010, Crete, Greece, September 2010.
• Q. Yang, K-H. Tan and N. Ahuja, Real-time 0(1) Bilateral Filtering, IEEE Conference on Computer Vision and Pattern Recognition (CVPR), Miami, FL, June 2009.
• E. Akbas and N. Ahuja, From Ramp Discontinuities to Segmentation Tree, 9th Asian Conference on Computer Vision, Xi?n, China, September 2009.
• S. Todorovic and N. Ahuja, Texel-based Texture Segmentation, International Conference on Computer Vision, Kyoto, Japan, September-October 2009.
• Q. Kong, A. Kumar, N. Ahuja and Y. Liu, Robust Segmentation of Freight Containers in Train Monitoring Videos, Workshop on Applications of Computer Vision (WACV), Snowbird, Utah, December 2009.
• G. R. Murthy, N. Ahuja, Non- uniform sampling: A novel approach, ICASSP 2009, 3229-3232.
• Schlake, B.W., J.R. Edwards, J.M. Hart, C.P.L. Barkan, S. Todorovic and N. Ahuja. 2009. Machine Vision Condition Monitoring of Heavy-Haul Railcar Structural Underframe Components. In: Proceedings of the 9th International Heavy Haul Conference, Shanghai, China, June 2009.
• Sawadisavi, S., J.R. Edwards, E. Resendiz, J.M. Hart, C.P.L Barkan and N. Ahuja. 2009. Machine-Vision Inspection of Railroad Track. In: Proceedings of the Transportation Research Board 88th Annual Meeting, Washington, DC, January 2009.
• J. Hart, E. Resendiz, B. Freid, S. Sawadisavi, C. Barkan and N. Ahuja, Machine Vision Using Multi-Spectral Imaging for Undercarriage Inspection of Railroad Equipment, Proc. 8th World Congress on Railway Research, Seoul, Korea, May 2008.
• N. Ahuja and S. Todorovic, Connected Segmentation Tree — A Joint Representation of Region Layout and Hierarchy, IEEE Conference on Computer Vision and Pattern Recognition (CVPR), Anchorage, Alaska, June 2008.
• S. Todorovic and N. Ahuja, Learning Subcategory Relevances for Category Recognition, IEEE Conference on Computer Vision and Pattern Recognition, Anchorage, Alaska, June 2008.
• V. Hedau, H. Arora and N. Ahuja, Matching Images under Unstable Segmentation, Proc. IEEE Conference on Computer Vision and Pattern Recognition, Anchorage, Alaska, June 2008.
• B. Ghanem and N. Ahuja, Extracting a Fluid Dynamic Texture and the Background from Video, Proc. IEEE Conference on Computer Vision and Pattern Recognition, Anchorage, Alaska, June 2008.
• S. Sawadisavi, J. Edwards, E. Resendiz, J. Hart, C. Barkan and N. Ahuja, Machine Vision Inspection of Railroad Track, Proc. AREMA 2008 Annual Conference, Salt Lake City, UT, September 2008.
• B. Ghanem, E. Resendiz and N. Ahuja, Segmentation-based Perceptual Image Quality Assessment (SPIQA), International Conference on Image Processing, San Diego, CA, October 2008.
• E. Resendiz and N. Ahuja, A Unified Model for Activity Recognition in Video, Proc. 19th International Conference on Pattern Recognition, Tampa, FL, December 2008.
• S. Shetty and N. Ahuja, A Uniformity Criterion and Algorithm for Data Clustering, 19th International Conference on Pattern Recognition, Tampa, FL, December 2008.
• O. Azy and N. Ahuja, Segmentation of Periodically Moving Objects, 19th International Conference on Pattern Recognition, Tampa, FL, December 2008.
• S. Todorovic and N. Ahuja, Scale-invariant Region-based Hierarchical Image Matching , 19th International Conference on Pattern Recognition, Tampa, FL, December 2008.
• A. Kumar, N. Ahuja, J. Hart, U.K. Visesh, P.J. Narayanan, C.V. Jawahar, A Vision System for Monitoring Intermodal Freight Trains, Workshop on Applications of Computer Vision (WACV), Austin, TX, February 2007.
• B. Freid, C. Barkan, N. Ahuja, J. Hart, S. Todorovic, N. Kocher, Multispectral Machine Vision for Improved undercarriage Inspection of Railroad Rolling Stock, Proc. International Heavy Haul Conference, Specialist Technical Session, Kiruna, Sweden, June 2007, 737-744.
• J. Edwards, J. Hart, S. Todorovic, C. Barkan, N. Ahuja, Z. Chua, N. Kocher, and J. Zeman, Development of Machine Vision Technology for Railcar Safety Appliance Inspection, Proc. International Heavy Haul Conference, Specialist Technical Session, Kiruna, Sweden, June 2007, 745-752.
• H. Arora, N. Loeff, D. Forsyth and N. Ahuja, Unsupervised Segmentation of Objects using Efficient Learning, Proc. IEEE Conference on Computer Vision and Pattern Recognition (CVPR), Minneapolis, MN, June 2007, 1-7.
• C. Gao, N. Ahuja and H. Hua, Active Aperture Control and Sensor Modulation for Flexible Imaging, IEEE Conference on Computer Vision and Pattern Recognition (CVPR), Minneapolis, MN, June 2007.
• H. Arora and N. Ahuja, Modeling Objects using Distribution and Topology of Multiscale Region Pairs, IEEE Conference on Computer Vision and Pattern Recognition (CVPR), Beyond Patches Workshop, Minneapolis, MN, June 2007, 1-8.
• B. Ghanem and N. Ahuja, Phase PCA for Dynamic Texture Video Compression, International Conference on Image Processing, San Antonio, TX, September 2007, 425-428.
• N. Ahuja and S. Todorovic, Learning the Taxonomy and Models of Categories Present in Arbitrary Images, Proc. IEEE International Conference on Computer Vision, Rio De Janeiro, Brazil, October 2007.
• N. Ahuja and S. Todorovic, Extracting Texels in 2.1D Natural Textures, Proc. IEEE International Conference on Computer Vision, Rio De Janeiro, Brazil, October 2007.
• B. Ghanem and N. Ahuja, Phase Based Modeling of Dynamic Textures, Proc. IEEE International Conference on Computer Vision, Rio De Janeiro, Brazil, October 2007.
• N. Ahuja and A. Briassouli, Joint Spatial and Frequency Domain Motion Analysis, Proc. 7th International Conference Automatic Face and Gesture Recognition, Southampton, UK, April 2006, 197-204.
• A. Briassouli and N. Ahuja, Estimation of Multiple Periodic Motions from Video, Proc. 9th European Conference on Computer Vision, Graz, Austria, May 2006, 147-159.
• R.-S. Lin, C.-B. Liu, M.-H. Yang, N. Ahuja and S. Levinson, Learning Nonlinear Manifolds from Time Series, Ninth European Conference on Computer Vision, Vol. 2, Graz, Austria, May 2006, 245-256.
• C.-B. Liu, R.-S. Lin, N. Ahuja and M.-H. Yang, Dynamic Textures Synthesis as Nonlinear Manifold Learning and Traversing, Proceedings of British Machine Vision Conference, 2006, 859-868.
• S. Todorovic and N. Ahuja, Extracting Subimages of an Unknown Category from a Set of Images, Proceedings IEEE Conference on Computer Vision and Pattern Recognition (CVPR), New York, NY, Vol. 1, June 2006, 927-934.
• T. Yu, N. Ahuja and W-C. Chen, SDG Cut: 3D Reconstruction of Non-Lambertian Objects Using Graph Cuts on Surface Distance Grid, Proceedings IEEE Conference on Computer Vision and Pattern Recognition (CVPR), New York, NY, Vol. 2, June 2006, 2269-2276.
• C. Gao and N. Ahuja, A Refractive Camera for Acquiring Stereo Depth and Super-Resolution Images, Proceedings IEEE Conference on Computer Vision and Pattern Recognition (CVPR), New York, NY Vol. 2, June 2006, 2316-2323.
• S. Todorovic and N. Ahuja, 3D Texture Classification Using the Belief Net of a Segmentation Tree, International Conference on Pattern Recognition, Vol. 4, August 2006, 33-36.
• A. Briassouli and N. Ahuja, Spatial and Fourier Error Minimization for Motion Estimation and Segmentation, International Conference on Pattern Recognition, Vol. 1, Hong Kong, August 2006, 94-97.
• H. Arora and N. Ahuja, Analysis of Ramp Discontinuity Model for Multiscale Image Segmentation, International Conference on Pattern Recognition, Vol. 4, August 2006, 99-103.
• C-B. Liu, R-S. Lin, M-H. Yang, N. Ahuja and S. Levinson, Object Tracking Using Globally Coordinated Nonlinear Manifolds, International Conference on Pattern Recognition, Vol. 1, Hong Kong, August 2006, 844-847.
• S. Yi and N. Ahuja, An Omnidirectional Stereo Vision System Using a Single Camera, International Conference on Pattern Recognition, Vol. 4, Hong Kong, August 2006, 861-847.
• S. Yi and N. Ahuja, A Novel Omnidirectional Stereo Vision System with a Single Camera, International Conference on Image Analysis and Recognition, LNCS 4142, Portugal, September 2006, 146-156.
• H. Wang, Y. Chen, T. Fang, J. Tyan and N. Ahuja, Gradient Adaptive Image Restoration and Enhancement, International Conference on Image Processing, Atlanta, GA, October 2006.
• T. Yu, H. Wang, N. Ahuja, W.-C. Chen: Sparse Lumigraph Relighting by Illumination and Reflectance Estimation from Multi-View Images. Rendering Techniques 2006: 41-50.
• Edwards, J.R, C.P.L. Barkan, S. Todorovic, J.M. Hart, and N. Ahuja 2006. Improving the efficiency and effectiveness of railcar safety appliance inspection using machine vision technology. JRC2006-94052. Proceedings of the ASME Joint Rail Conference, Atlanta , GA (April 2006)
• Lai, Y-C., J.M.Hart, J. Drapa, N. Ahuja, C.P.L. Barkan, and L. Milhon. Machine vision analysis of the energy efficiency of intermodal trains, JRC2006-94047. Proceedings of the ASME Joint Rail Conference, Atlanta , GA (April 2006)
• T. Yu, J. Luo, A. Singhal and N. Ahuja, Shape Regularized Active Contour Based on Dynamic Programming for Anatomical Structure Segmentation, SPIE Medical Imaging 2005, San Diego, CA, February 2005, 419-430.
• H. Wang and N. Ahuja, Rank-R Approximation of Tensors Using Image-as-Matrix Representation, IEEE International Conference on Computer Vision and Pattern Recognition (CVPR), Vol. 2, San Diego, CA, June 2005, 346-353.
• H. Wang, N. Xu, R. Raskar and N. Ahuja, Videoshop: A New Framework for Video Editing in Spatio-Temporal Gradient domain, Video Proceedings, IEEE International Conference on Computer Vision and Pattern Recognition (CVPR), Vol. 2, San Diego, CA, June 2005, 1201.
• T. Yu, J. Luo and N. Ahuja, Shape Regularized Active Contour using Iterative Global Search and Local Optimization, IEEE International Conference on Computer Vision and Pattern Recognition (CVPR), San Diego, CA, June 2005 Vol. II, 655-662.
• H. Wang, Q. Wu, L. Shi, Y. Yu and N. Ahuja, Out-of-Core Tensor Approximation of Multi-Dimensional Matrices of Visual Data, ACM SIGGRAPH, August 2005, Vol. 24, No. 3, 527-535.
• A. Briassouli, N. Ahuja, Integrated Spatial and Frequency Domain 2D MotionSegmentation and Estimation, Proceedings 10th International Conference on Computer Vision, Vol. 1, Beijing, China, October 2005, 244-250.
• H. Wang, R. Raskar and N. Ahuja, High Dynamic Range Video Using Split Aperture Camera, IEEE 6th Workshop on Omnidirectional Vision, Camera Networks and Non-classical Cameras (OMNIVIS, in conjunction with ICCV), Beijing, China, October 2005.
• T. Yu and N. Ahuja, Simultaneous Estimation of Texture Map and Pseudo Illumination from Multiple Views, Texture 2005, The 4th International Workshop on Texture Analysis and Synthesis, in conjunction with ICCV 2005, Beijing, China, October 2005, 19-24.
• C.-B. Liu. R.-S. Lin and N. Ahuja, Modeling Dynamic Textures Using Subspace Mixtures, International Conference on Multimedia & Expo (ICME), 2005, 1378-1381.
• Lai, Y.C., J.M.Hart, P. Vemuru, J. Drapa, N. Ahuja, C.P.L. Barkan, L. Milhon, and M.P. Stehly, Machine vision analysis of the energy efficiency of intermodal trains, 2005,In Proceedings of the 8th International Heavy Haul Conference , Rio de Janiero, June 2005, pp. 387-394.
• N. Xu and N. Ahuja, Interactive Object Selection Using S-t Minimum Cut, Proc. Asian Conference on Computer Vision, Jeju, Korea, January 2004, 354-359.
• N. Xu and N. Ahuja, On the Use of Depth-From-Focus in 3D Object Modeling from Multiple Views, Proc. Asian Conference on Computer Vision, Jeju, Korea, January 2004, 1038-1043.
• N. Xu, T. Yu and N. Ahuja, Shape from Color Consistency Using Node Cut, Proc. Asian Conference on Computer Vision, Jeju, Korea, January 2004, 646-651.
• T. Yu, N. Xu and N. Ahuja, Shape and View Independent Reflectance Map from Multiple Views, Proc. European Conference on Computer Vision, Prague, May 2004, 602-616.
• M. Singh, H. Arora and N. Ahuja, Robust Probabilistic Estimation for Parametric Image Models, Proc. European Conference on Computer Vision, Prague, May 2004, 508-522.
• M. Singh, H. Arora and N. Ahuja, Robust Registration and Tracking Using Kernel Density Correlation, 2nd IEEE Conference on Image and Video Registration, Washington, DC. June 2004, p. 174.
• C.-B. Liu and N. Ahuja, A Model for Dynamic Shape and Its Applications, IEEE Conference on Computer Vision and Pattern Recognition (CVPR), Washington, DC, June 2004, Vol. 2, 129-134.
• T. Yu, N. Xu and N. Ahuja, Recovering Shape and Reflectance Model of Non-Lambertian Objects from Multiple Views, IEEE Conference on Computer Vision and Pattern Recognition (CVPR), Washington, DC, June 2004, 226-233.
• A. Jagmohan, M. Singh and N. Ahuja, Dense Two View Stereo Matching Using Kernel Maximum Likelihood Estimation, IEEE International Conference on Pattern Recognition, Cambridge, UK, August, 2004, 28-31.
• C.-B. Liu and N. Ahuja, Vision Based Fire Detection, IEEE International Conference on Pattern Recognition, Cambridge, UK, August 2004, Vol. 4, 134-137.
• N. Xu, K. Tan, H. Arora and N. Ahuja, Generating Omnifocus Images Using Graph Cuts and a New focus Measure, IEEE International Conference on Pattern Recognition, Cambridge, UK, August 2004, Vol. 4, 697-700.
• T. Yu, N. Xu and N. Ahuja, Reconstructing a Dynamic Surface from Video Sequences Using Graph Cuts in 4D Space-Time, IEEE International Conference on Pattern Recognition, Cambridge, UK, August 2004, 245-248.
• A. Briassouli and N. Ahuja, Fusion of Frequency and Spatial Domain Information for Motion Analysis, IEEE International Conference on Pattern Recognition, Cambridge, UK, August 2004, 175-178.
• C. Gao and N. Ahuja, Single Camera Stereo Using Planar Parallel Plate, IEEE International Conference on Pattern Recognition, Cambridge, UK, August 2004, Vol. 4, 108-111.
• H. Wang, R. Raskar and N. Ahuja, Seamless Video Editing. IEEE International Conference on Pattern Recognition, Cambridge, UK, August 2004, Vol. 3, 858-861.
• H. Wang and N. Ahuja, Compact Representation of Multidimensional Data Using Tensor Rank-One Decomposition, IEEE International Conference on Pattern Recognition, Cambridge, UK, August 2004, Vol. 1, 44-47.
• C.-B. Liu and N. Ahuja, Motion Based Retrieval of Dynamic Objects in Videos, ACM Multimedia Conference, October 2004, 288-291.
• Hart, J.M., N. Ahuja, C.P.L. Barkan and D.D. Davis, A machine vision system for monitoring railcar health: Preliminary results. TD 04-008. Association of American Railroads, Pueblo, CO, 2004.
• R. Dugad and N. Ahuja, Transformation of Image Parts in Different domains to Obtain Resultant Image Size Different From Initial Image Size, U.S. Patent, Issued October 2004.
• C. Gao, H. Hua and N. Ahuja, Easy Calibration of Head-Mounted Projective Display for Augmented Reality Systems, IEEE Virtual Reality Conference, Los Angeles, CA, March 2003, 53-60.
• H. Hua, L. Brown, C. Gao and N. Ahuja, A New Collaborative Infrastructure: SCAPE, Proc. IEEE Virtual Reality 2003, Los Angeles, CA, March 2003, 171.
• A. Jagmohan and A. Ahuja, Wyner-Ziv Encoded Predictive Multiple Descriptions, Data Compression Conference, Snowbird, UT, March 2003, 213-222.
• A. Sehgal and N. Ahuja, Robust predictive coding and the Wyner-Ziv problem, IEEE Data Compression Conference, Snowbird, UT, April 2003, 103-112.
• N. Xu, R. Bansal and N. Ahuja, Object Segmentation using Graph Cuts Based Active Contours, Proceedings of International Conference on Computer Vision and Pattern Recognition (CVPR), Madison, WI, June 2003, Vol. 2, 46-53.
• A. Jagmohan, A. Sehgal and N. Ahuja, WYZE-PMD Based Multiple Description Video Codes, Proc. International Conference Multimedia and Expo, Vol. 1, Baltimore, MD, July 2003, 569-572.
• N. Xu and N. Ahuja, A Three-view Matching Algorithm Considering Foreshortening Effects, Proc. Int. Conf. On Computer Vision, Pattern Recognition and Image Processing, Cary, NC, September 2003, 635-638.
• A. Sehgal, A. Jagmohan and N. Ahuja, A State-Free Video Encoding Paradigm, IEEE Int. Conference on Image Processing, Barcelona, Spain, September 2003.
• H. Wang and N. Ahuja, Facial Expression Decomposition, International Conference on Computer Vision, Nice, France, October 2003, 958-965.
• M. Singh and N. Ahuja, Regression Based Bandwidth Selection for Segmentation using Parzen Windows, Int. Conference on Computer Vision, Vol. 1, Nice, France, October 2003, 2-9.
• A. Jahmohan, A. Sehgal and N. Ahuja, Compression of Lightfield Rendered Images Using Coset Codes, Proc. Asilomar Conference on Signals, Systems and Computers, Asilomar, CA, November 2003.
• N. Xu, N. Ahuja and R. Bansal, Automated Lung Nodule Segmentation using Dynamic Programming and EM Based Classification, SPIE Medical Imaging 4684-70, February 2002, San Diego, CA.
• H. Hua, C. Gao, L. Brown, N. Ahuja and J. P. Rolland, A Testbed for Precise Registration, Natural Occlusion and Interaction in an Augmented Environment using a Head-Mounted Projective Display (HMPD), IEEE VR 2002 Proceedings, March 2002, Orlando, FL, 81-89.
• A. Sehgal and N. Ahuja, Robust Predictive Coding and the Wyner-Ziv Problem, Data Compression Conference, Snowbird, Utah, 2002.
• A. Jagmohan, A. Sehgal and N. Ahuja, Isotropic Error-Diffusion Halftoning, IEEE International Conference on Speech and Signal Processing, May 2002, Orlando, FL, 3329-3332.
• M.-H. Yang, D. Roth and N. Ahuja, A Tale of Two Classifiers: SNoW vs. SVM in Visual Recognition, Proc. Seventh European Conference on Computer Vision, Lecture Notes in Computer Science, Vol. 2353, Springer Verlag, Copenhagen, May 2002, 685-699.
• K.-H. Tan, H. Hua and N. Ahuja, Multiview Mirror Pyramid-based Panoramic Cameras, Proceedings of the IEEE Workshop on Omnidirectional Vision (Omnivis), June 2002, Copenhagen, Denmark, 87-93.
• N. Xu and N. Ahuja, Iterative 3D Surface Modeling from a Sparse Set of Matched Points, Proceedings IEEE International Conference on Multimedia and Expo, August 2002, Lausanne, Switzerland, 893-896.
• A. Jagmohan, A. Sehgal and N. Ahuja, Predictive Coding Using Coset Codes, IEEE International Conference on Image Processing, Vol. 2, September 2002, Rochester, NY, 29-32.
• N. Xu and N. Ahuja, Object Contour Tracking using Graph Cuts Based Active Contours, IEEE International Conference on Image Processing, September 2002, Rochester, NY, Vol. 3, 277-280.
• H. Hua, C. Gao and N. Ahuja, Calibration of a Head-Mounted Projective Display for Augmented Reality Systems, Proceedings IEEE and ACM International Symposium on Mixed and Augmented Reality, Sept/Oct. 2002, Darmstadt, Germany, 176-185.
• A. Jagmohan, A. Sehgal and N. Ahuja, Multiple Description Coding Using Coset Codes, IEEE International Conference on Communication Systems, November 2002, Singapore, 732-737.
• A. Sehgal, A. Jagmohan and N. Ahuja, Scalable Predictive Coding and the Wyner-Ziv Problem, IEEE International Conference on Communication Systems, November 2002, Singapore, 101-106.
• K.-H. Tan, D. Kriegman and N. Ahuja, Appearance-based Eye Gaze Estimation, Proceedings IEEE Workshop on Applications of Computer Vision, December 2002, Orlando, FL, 191-195.
• M. Singh and N. Ahuja, Mean-shift Segmentation with Wavelet-based Bandwidth Selection, 6th IEEE Workshop on Applications of Computer Vision, December 2002, Orlando, FL, 43-47.
• M. Singh and N. Ahuja, Edge Measures Using Similarity Regions, Foundations of Image Understanding, L. S. David (Ed.), Kluwer, 2002, 241-288. Abstract and Full Text
• A. Sehgal, A. Jagmohan and N. Ahuja, Wireless Video Conferencing Using Multiple Description Coding, IEEE International Symposium on Circuits and Systems, 2001, Sydney, Australia, 303-306.
• M. Aggarwal and N. Ahuja, High Dynamic Range Panoramic Imaging, Proc. International Conference on Computer Vision, Vancouver, Canada, July 2001, 2-9.
• M. Aggarwal and N. Ahuja, Split Aperture Imaging for High Dynamic Range, Proc. International Conference on Computer Vision, Vancouver, Canada, July 2001, 10-17.
• M. Aggarwal and N. Ahuja, A New Imaging Model, Proc. International Conference on Computer Vision, Vancouver, Canada, July 2001, 82-89.
• M. Aggarwal, H. Hua and N. Ahuja, On Cosine-Fourth and Vignetting Effects in Lenses, Proc. International Conference on Computer Vision, Vancouver, Canada, July 2001, 472-479.
• K.-H. Tan and N. Ahuja, Selecting Objects with Freehand Sketches, Proc. International Conference on Computer Vision, Vancouver, Canada, July 2001, 337-344.
• H. Hua, L.D. Brown, C. Gao, N. Ahuja, J.P. Rolland, F. Biocca, A Head-Mounted Projective Display and Its Applications in Interactive Augmented Environments, Conference Abstracts and Applications ֠Sketches and Applications, SIGGRAPH, Los Angeles, CA, August 2001.
• S.-C. Yoon and N. Ahuja, Frame Interpolation using Transmitted Block-Based Motion Vectors, Proc. International Conference on Image Processing, Thessaloniki, Greece, October 2001, 856-859.
• A. Sehgal, A. Jagmohan and N. Ahuja, High Capacity Data Embedding in the Wavelet Domain, IEEE International Conference on Image Processing, October 2001, Thessaloniki, Greece, 979-982.
• M.-H. Yang, D. Roth and N. Ahuja, Face Detection Using Large Margin Classifiers, Proc. International Conference on Image Processing, Thessaloniki, Greece, October 2001, 665-668.
• H. Hua, C. Gao, L.D. Brown, N. Ahuja and J.P. Rolland, Using a Head-Mounted Projective Display in Interactive Augmented Environments, Proceedings of IEEE and ACM International Symposium on Augmented Reality, New York, NY, October 2001, 217-223.
• H. Hua and N. Ahuja, A High Resolution Panoramic Camera, IEEE Conf. On Computer Vision and Pattern Recognition (CVPR), December 11-13, 2001, Hawaii, I-960-967.
• K.H. Tan and N. Ahuja, A Representation for Image Structure and Its Application to Object Selection Using Freehand Sketches, IEEE Conf. On Computer Vision and Pattern Recognition (CVPR), December 11-13, 2001, Hawaii, II-677-683.
• H. Hua and N. Ahuja, Method and Apparatus for a High-Resolution and Real-Time Panoramic Camera, Patent Application Filed, November 2001.
• Ming-Hsuan Yang and N. Ahuja, Face Detection and Hand Gesture Recognition for Vision-Based Human Computer Interaction, Kluwer Academic Publishers, 2001.
• N. Ahuja and S. Sull, Analysis Guided Video Synthesis for Hyper Reality, N. Terashima and J. Tiffin (Eds.), Hyper Reality: Paradigm for the Third Millenium, 2001.
• M.-H. Yang, N. Ahuja and D. Roth, View-Based 3D Object Recognition Using SNoW, Proc. of the Fourth Asian Conference on Computer Vision, Vol. 2, Taipei, Jan. 2000, 830-835.
• M.-H. Yang, N. Ahuja and D. Kriegman, Face Detection Using Mixtures of Linear Subspaces, Fourth IEEE Int. Conference on Automatic Face and Gesture Recognition (FG 2000), Grenoble, France, March 2000, 70-76.
• M.-H. Yang and N. Ahuja, A Geometric Approach to Train Support Vector Machines, IEEE Int. Conference on Computer Vision and Pattern Recognition (CVPR), Vol. I, Hilton Head, SC, June 2000, 430-437.
• D. Roth, N.-H. Yang and N. Ahuja, Learning to Recognize Objects, IEEE Int. Conference on Computer Vision and Pattern Recognition (CVPR), Vol. I, Hilton Head, SC, June 2000, 724-731.
• M-H. Yang, D. Roth and N. Ahuja, Learning to Recognize 3D Objects with SNoW, Proc. Sixth European Conference on Computer Vision, Vol. 1, Dublin, June 2000, 439-454.
• J. Ma and N. Ahuja, Region Correspondence by Global Configuration Matching and Progressive Delauney Triangulation, IEEE Int. Conference on Computer Vision and Pattern Recognition (CVPR), Vol. II, Hilton Head, SC, June 2000, 637-642.
• R. Dugad and N. Ahuja, A Scheme for Joint Watermarking and Compression of Video, IEEE Int. Conference on Image Processing, Vol. 2, Vancouver, BC, Canada, Sept. 2000, 80-84.
• M.-H. Yang, N. Ahuja and D. Kriegman, Face Recognition Using Kernel Eigenfaces, IEEE Int. Conference on Image Processing, Vol. 1, Vancouver, BC, Canada, Sept. 2000, 37-41.
• J. Ma, N. Ahuja, C. Neti and A. Senior, Recovering Frontal-Pose Image from a Single Profile Image, IEEE Int. Conference on Image Processing, Vol. 2, Vancouver, BC, Canada, Sept. 2000, 243-247.
• M. Aggarwal and N. Ahuja, Camera Center Estimation, Int. conference on Pattern Recognition, Vol. 1, Barcelona, Spain, Sept. 2000, 876-880.
• M. Aggarwal and N. Ahuja, Estimating Sensor Orientation in Cameras, Int. Conference on Pattern Recognition, Vol. 1, Barcelona, Spain, Sept. 2000, 896-899.
• M. Aggarwal and N. Ahuja, On Generating Seamless Mosaics with Large Depth of Field, Int. Conference on Pattern Recognition, Vol. 1, Barcelona, Spain, Sept. 2000, 588-591.
• L. Lu and N. Ahuja, Identification and control of a Pneumatic Actuator for Use With the Hexapod Project, Proc. ICARCV 2000, Singapore. Dec. 2000, (CD ROM).
• R. Dugad and N. Ahuja, Transform Domain Significant Coefficient Digital Image Watermarking Method, U.S. patent Application filed, June 2000.
• M.-H. Yang and N. Ahuja, Gaussian Mixture Modeling of Human Skin Color and Its Applications in Image and Video Databases, Proc. of the SPIE: Storage and Retrieval for Image and Video Databases VI, Vol. 3656, San Jose, CA, Jan. 1999.
• M-H. Yang and N. Ahuja, Recognizing Hand Gestures Using Motion Trajectories, IEEE Conference on Computer Vision and Pattern Recognition (CVPR), Ft. Collins, CO, June 1999, I-466-472.
• R. Dugad and N. Ahuja, A Fast Scheme for Altering Resolution in the Compressed Domain, IEEE Conference on Computer Vision and Pattern Recognition (CVPR), Ft. Collins, CO, June 1999, I-213-218.
• M.-H. Yang and N. Ahuja, A Data Partition Method for Parallel Self-Organizing Map, IEEE International Joint Conference on Neural Networks, Washington, DC, July 1999.
• M.-H. Yang, N. Ahuja, D. Kriegman, Face Detection using a Mixture of Factor Analyzers, International Conference on Image Processing, Kobe, Japan, Oct. 1999, III-612-616.
• R. Dugad and N. Ahuja, A Fast Scheme for Downsampling and Unsampling in the DCT Domain, International Conference on Image Processing, Kobe, Japan, Oct. 1999, II-909-913.
• R. Dugad and N. Ahuja, Video Denoising by Combining Kalman and Wiener Estimates, International Conference on Image Processing, Kobe, Japan, Oct. 1999, IV-152-156.
• M. Singh, P. Ishwar, K. Ratakonda and N. Ahuja, Segmentation Based Denoising Using Multiple Compaction Domains, International Conference on Image Processing, Kobe, Japan, Oct. 1999, I-372-375.
• D. Roth, M.-H. Yang and N. Ahuja, A SnoW-Based Face Detector, Proc. Advances in Neural Information Processing Systems (NIPSҹ9), Denver, CO, Dec. 1999, 862-868.
• M. Shaw, N. Ahuja and S. Hutchinson, Coordination, Collaboration, and Control of Multi-Robot Systems, Handbook for Industrial Robotics, 2nd Edition, S. Nof (Ed.), Wiley, 1999,423-437.
• A. Castano and N. Ahuja, Omnifocused 3D Display Using the Nonfrontal Imaging Camera, Proc. IEEE and ATR Workshop on Computer Vision for Virtual Reality Based Human Communications, CVVRHCɹ8, Bombay, India, January 3, 1998, 28-34.
• K. Ratakonda and N. Ahuja, Restoring Image Quality Through Structure Preserving De-Noising, 3rd Asian Conference on Computer Vision, Hong Kong, January 8-11, 1998, 33-40.
• B. Perrin, N. Ahuja and N. Srinivasa, Learning Multiscale Image Models of 2D Object Classes, 3rd Asian Conference on Computer Vision, Hong Kong, January 8-11, 1998, 323-331.
• N. Srinivasa and N. Ahuja, A Learning Approach to Fixate on 3D Targets with Active Cameras, 3rd Asian Conference on Computer Vision, Hong Kong, January 8-11, 1998, 623-631.
• P. Bajcsy and N. Ahuja, Hierarchical Texture Segmentation, 3rd Asian Conference on Computer Vision, Hong Kong, January 8-11, 1998, 291-298.
• M.-H. Yang and N. Ahuja, Extracting Gestural Motion Trajectories, 1998 IEEE International Conference on Automatic Face and Gesture Recognition, Nara, Japan, April 1998, 10-15.
• R. Dugad and N. Ahuja, Unsupervised Multidimensional Hierarchical Clustering, International Conference on Acoustics, Speech, and Signal Processing, Seattle, WA, Vol. V, May 12-15, 1998, 2761-2764.
• M. Aggarwal, N. Shanbhag and N. Ahuja, Improving the Throughput of Flexible-Precision DSPs via Algorithm Transformation, International Conference on Acoustics, Speech, and Signal Processing, Vol. V, Seattle, WA, May 12-15, 1998, 3069-3072.
• P. Ishwar, K. Ratakonda, P. Moulin and N. Ahuja, Image De-noising Using Multiple Compaction Domains, International Conference on Acoustics, Speech, and Signal Processing, Vol. III, Seattle, WA, May 12-15, 1998, Invited, 1889-1892.
• M.-H. Yang and N. Ahuja, Extraction and Classification of Visual Motion Patterns for Hand Gesture Recognition, IEEE Computer Society Conference on Computer Vision and Pattern Recognition (CVPR), Santa Barbara, CA, June 1998, 892-897.
• J. Ma and N. Ahuja, Dense Shape and Motion from Region Correspondences, IEEE Computer Society Conference on Computer Vision and Pattern Recognition (CVPR), Santa Barbara, CA, June 1998, 219-224.
• K. Ratakonda and N. Ahuja, POCS-Based Adaptive Image Magnification, Proc. International Conference on Image Processing, Vol. 3, Chicago, IL, October 1998, 203-207.
• K. Ratakonda, R. Dugad and N. Ahuja, Digital Image Watermarking: Issues in Resolving Rightful Ownership, Proc. International Conference on Image Processing, Vol. 2, Chicago, IL, October 1998, 414-418.
• R. Dugad, K. Ratakonda and N. Ahuja, A New Wavelet-Based Scheme for Watermarking Images, Proc. International Conference on Image Processing, Vol. 2, Chicago, IL, October 1998, 419-423.
• M.-H. Yang and N. Ahuja, Detecting Human Faces in Color Images, IEEE International Conference on Image Processing, Vol. 1, Chicago, IL, October 1998, 127-130.
• R. Dugad, K. Ratakonda and N. Ahuja, Robust Video Shot Change Detection, IEEE Workshop on Multimedia Signal Processing, Redondo Beach, CA, December 1998, 276-278.
• R. Dugad, K. Ratakonda and N. Ahuja, Robust Video Shot Change Detection, Indian Conference on Computer Vision, Graphics and Image Processing, New Delhi, India, December 1998, 358-363.
• M. Singh and N. Ahuja, Estimating Light Sources, Indian Conference on Computer Vision, Graphics and Image Processing, New Delhi, India, December 1998, 76-81.
• N. Ahuja and M. Tabb, Multiscale Image Edge and Region Detection Method and Apparatus, U. S. Patent, Issued September 1998.
• N. Ahuja and R. Charan, Curve Detection in 3D Dot Patterns using Voronois Impact on Modern Science, Voronois Impact on Modern Science, H. Syta and P. Engel (Eds.), National Academy of Sciences of Ukraine, Institute of Mathematics, Book II, 1998, 204-212.
• K. Ratakonda and N. Ahuja, Discrete Multi-Dimensional Linear Transforms over Connected Arbitrarily Shaped Supports, IEEE International Conference on Acoustics, Speech and Signal Processing, Vol. 4, Munich, Germany, April 1997, 3041-3044.
• P. Bajcsy and N. Ahuja, A New Framework for Hierarchical Segmentation using Homogeneity Analysis, Proc. First International Conference on Scale-Space in Computer Vision, Vol. 1252, Springer LNCS, Utrecht, Netherlands, July 1997, 319-322.
• N. Ahuja and T. S. Huang, IU at UI: An Overview of Research During 1996-97. Proc. Image Understanding Workshop, New Orleans, LA, May 1997, 465-472.
• P. Bajcsy and N. Ahuja, Hierarchical Image Segmentation Using Similarity Analysis, Proc. Image Understanding Workshop, New Orleans, LA, May 1997, 541-545.
• K. Ratakonda and N. Ahuja, Super Resolution with Region Sensitive Interpolation, Proc. Image Understanding Workshop, New Orleans, LA, May 1997, 537-540.
• N. Srinivasa and N. Ahuja, Learning to Fixate on 3D Targets with Uncalibrated Active Cameras, Proc. Image Understanding Workshop, New Orleans, LA, May 1997, 129-134.
• S. C. Yoon, K. Ratakonda and N. Ahuja, Region Based Video Coding Using a Multiscale Image Segmentation, International Conference on Image Processing, Vol. II, Santa Barbara, CA, October 26-29, 1997, 510-513.
• K. Ratakonda, S. C. Yoon and N. Ahuja, Coding the displaced frame difference for video compression, International Conference on Image Processing, Vol. I, Santa Barbara, CA, October 26-29, 1997, 353-356.
• N. Ahuja and T. Huang, IU at UI: An Overview of Research During 1994-95, Proceedings Image Understanding Workshop, Palm Springs, CA, February 12-15, 1996, 159-164.
• P. Bajcsy and N. Ahuja, Segmentation of Multidimensional Images, Proceedings Image Understanding Workshop, Palm Springs, CA, February 12-15, 1996, 937-942.
• N. Ahuja and S. A. Jackson, Multiscale Region Detection, Proceedings Image Understanding Workshop, Palm Springs, CA, February 12-15, 1996, 961-967.
• D. Hougen and N. Ahuja, Shape from Appearance: A Statistical Approach to Surface Shape Estimation, Proceedings Image Understanding Workshop, Palm Springs, CA, February 12-15, 1996, 1095-1101.
• D. Hougen and N. Ahuja, Resolution and Accuracy of Stereo, Focus, and Shading Methods, Proceedings Image Understanding Workshop, Palm Springs, CA, February 12-15, 1996, 1133-1139.
• D. Hougen and N. Ahuja, Shape from Appearance: A Statistical Approach to Surface Shape Estimation, Proceedings European Conference on Computer Vision, Cambridge, England, April 1996, 421-429.
• A. Krishnan and N. Ahuja, Panoramic Image Acquisition, Proceedings IEEE Conference on Computer Vision and Pattern Recognition (CVPR), San Francisco, CA, June 18-20, 1996, 379-384.
• P. Bajcsy and N. Ahuja, Uniformity and Homogeneity-based Hierarchical Clustering, Proceedings of International Conference on Pattern Recognition, Vienna, Austria, August 26-29, 1996, 96-100.
• S. Jackson and N. Ahuja, Elliptical Gaussian Filters, Proceedings of International Conference on Pattern Recognition, Vienna, Austria, August 26-29, 1996, 775-779.
• T. Courtney and N. Ahuja, Segmentation of Volume Images using a Multiscale Transform, Proceedings International Conference on Pattern Recognition, Vienna, Austria, August 26-29, 1996, 432-436.
• K. Ratakonda and N. Ahuja, Segmentation Based Reversible Image Compression, International Conference on Image Processing, Geneva, Switzerland, September 1996, 81-84.
• N. Ahuja and T. S. Huang, IU at UI: An Overview of Research During 1996-97. Proc. Image Understanding Workshop, New Orleans, LA, May 1997, 465-472.
• K. Bowyer and N. Ahuja, Advances in Image Understanding: A Festschrift for Azriel Rosenfeld, IEEE Computer Society Press, June 1996.
• N. Ahuja and R. Charan, Pixel Matching and Motion Segmentation in Image Sequences, Lecture Notes in Computer Science – Recent Developments in Computer Vision, 1035, S. Z. Li, D. P. Mital, E. K. Teoh, and H. Wang(Eds.), Springer-Verlag, 1996, 139-148.
• N. Ahuja, A Transform for Multiscale Image Segmentation, K. Bowyer and N. Ahuja (Eds.), Advances in Image Understanding: A Festschrift for Azriel Rosenfeld,IEEE Computer Society Press, June 1996, 45-64.
• T. Joshi, N. Ahuja and J. Ponce, Structure and Motion Estimation from Dynamic Silhouettes Under Perspective Projection, 5th Int. Conf. on Computer Vision, Cambridge, Massachusetts, June 20-23, 1995, 290-295.
• R. Charan and N. Ahuja, Feature Guided Pixel Matching and Segmentation in Motion Image Sequences, Int. Symposium on Computer Vision, November 19-21, 1995, Coral Gables, Florida, I277-I281.
• N. Ahuja and R. Charan, Pixel Matching and Motion Segmentation in Image Sequences, 2nd Asian Conf. on Computer Vision, Singapore, December 5-8, 1995, I310-I314.
• R. Charan and N. Ahuja, Curve Detection in 3D Dot Patterns, 2nd Asian Conf. on Computer Vision, Singapore, December 5-8, 1995, 199-203.
• N. Ahuja, A Nonfrontal Imaging Camera, Int. Computer Science Conference, Hong Kong, December 11-13, 1995, p. 397.
• N. Ahuja, Computer Vision, McGraw-Hill Encyclopedia of Science and Technology,1995.
• S. Sull and N. Ahuja, Integrated 3D Analysis of Flight Image Sequences, European Conference on Computer Vision, Vol. 1, Sweden, May 1994, 211-216.
• S. Das and N. Ahuja, Performance Evaluation of Depth Cues for Active Vision, NSF/DARPA Workshop on Performance vs. Methodology in Computer Vision, Seattle, WA, June 1994, 227-236.
• Darrell R. Hougen and N. Ahuja, Adaptive Polynomial Modelling of the Reflectance Map for Shape Estimation from Stereo and Shading, Proceedings IEEE Conference on Computer Vision and Pattern Recognition (CVPR), Seattle, WA, June 1994, 991-994.
• J. Weng, Y. Cui, N. Ahuja and A. Singh, Integration of Transitory Image Sequences, Proceedings IEEE Conference on Computer Vision and Pattern Recognition (CVPR), Seattle, WA, June 20-23, 1994, 966-969.
• M. Tabb and N. Ahuja, A Multiscale Region-Based Approach to Image Matching, Proceedings International Conference on Pattern Recognition, Jerusalem, Israel, October 10-13, 1994, 415-419.
• Y. Kitamura, H. Takemura, N. Ahuja and F. Kishino, Efficient Collision Detection Among Objects in Arbitrary Motion Using Multiple Shape Representations, Proceedings International Conference on Pattern Recognition, Jerusalem, Israel, October 10-13, 1994, 390-396.
• T. Joshi, N. Ahuja and J. Ponce, Towards Structure and Motion Estimation From Dynamic Silhouettes, Proc. IEEE Workshop on Motion of Nonrigid and Articulated Objects, Austin, TX November 11-12, 1994, 166-171.
• S. Sull and N. Ahuja, Estimation and Segmentation of Displacement Field Using Multiple Features, International Conference on Image Processing, Austin, TX, November 14-17, 1994, 53-57.
• N. Ahuja and T. S. Huang, IU at UI: An Overview of Research During 1993-94, Proceedings DARPA Image Understanding Workshop, November 1994, 133-142.
• S. Das and N. Ahuja, Performance Evaluation of Depth Cues in Active Stereo Vision, Proceedings DARPA Image Understanding Workshop, November 1994, 1041-1047.
• M. Tabb and N. Ahuja, Multiscale Image Segmentation Using a Recent Transform, Proceedings DARPA Image Understanding Workshop, November 1994, 1523-1530.
• T. Joshi, N. Ahuja and J. Ponce, Silhouette-based Structure and Motion Estimation of a Smooth Object, Proceedings DARPA Image Understanding Workshop, November 1994, 1237-1243.
• A. Krishnan and N. Ahuja, Obtaining Focused Images Using a Non-frontal Imaging Camera, Proceedings DARPA Image Understanding Workshop, November 1994, 617-620.
• N. Ahuja and T. Huang, IU at UI: An Overview of Research During 1994-95, Proceedings Image Understanding Workshop, Palm Springs, CA, February 12-15, 1996, 159-164.
• Z. Hong and N. Ahuja, Target Tracking and Cumulative Depth Map Generation from Binocular Image Sequences, Proc. 3rd Int. Conf. on Intelligent Autonomous Systems, Pittsburgh, PA, February 1993.
• X. Hu and N. Ahuja, Feature Extraction and Matching as Signal Detection, Proc. SPIE Conf. on Applications of Artificial Intelligence XI: Machine Vision and Robotics, 1993, 51-65.
• N. Ahuja and T. S. Huang, IU at UI: An Overview of Research during 1991-92, Proc. DARPA Image Understanding Workshop, Washington, April 19-21, 1993, 117-125.
• S. Thirumalai and N. Ahuja, Detection and Segmentation of Feature Trajectories in Multiple, Discontinuous Motion Image Sequences, Proc. DARPA Image Understanding Workshop, Washington, April 19-21, 1993, 621-628.
• N. Ahuja, A Transform for Detection of Multiscale Image Structure, Proc. DARPA Image Understanding Workshop, Washington, April 19-21, 1993, 893-903.
• A. Krishnan and N. Ahuja, Range Estimation from Focus Using a Non-frontal Imaging Camera, Proc. DARPA Image Understanding Workshop, Washington, April 19-21, 1993, 959-965.
• J. Weng, N. Ahuja and T. Huang, Learning, Recognition and Segmentation of 3-D Objects from 2-D Images, 4th Int. Conf. on Computer Vision, Berlin, Germany, May 11-14, 1993, 121-128.
• D. Hougen and N. Ahuja, Estimation of the Light Source Distribution and its Use in Shape Recovery from Stereo and Shading, 4th Int. Conf. on Computer Vision, Berlin, Germany, May 11-14, 1993, 148-155.
• Y. Kitamura, H. Takemura, N. Ahuja and F. Kishino, A Study of Interference Detection in Virtual Cooperative Workspace for an Operator Assistant, Workshop on Human Interface, Tokyo, May 24, 1993, vol. 8, no. 2, 247-254. (Part in English, part in Japanese). Also published as a Technical Report of Technical Meeting on Human Communication Engineering of IEICE, HC93-17. (in Japanese).
• N. Ahuja, A Transform for Detection of Multiscale Image Structure, Proc. IEEE Conference on Computer Vision and Pattern Recognition (CVPR), New York, June 1993, 780-781.
• S. Das and N. Ahuja, Performance Analysis of Focus, Vergence and Stereo as Depth Cues for Active Vision, Proc. IEEE Conference on Computer Vision and Pattern Recognition (CVPR), New York, June 1993, 194-199.
• A. Krishnan and N. Ahuja, Range Estimation from Focus Using a Non-frontal Imaging Camera, Proc. American Association for Artificial Intelligence Conference, Washington, July 1993, 830-835.
• A. Krishnan and N. Ahuja, Use of a Non-frontal Camera for Extended Depth of Field in Wide Scenes, Proc. SPIE Conf. on Intelligent Robots and Computer Vision XII: Algorithms and Techniques, September 1993, 62-72.
• X. Hu and N. Ahuja, Necessary and Sufficient Conditions for a Unique Solution of Plane Motion and Structure, Proc. 5th Int. Conference on Computer Analysis of Images and Patterns, Budapest, Hungary, September 13-15, 1993.
• T. Srikanth and N. Ahuja, Parallel Distributed Detection of Feature Trajectories in Multiple Discontinuous Motion Image Sequences, Int. Joint Conf. on Neural Networks, Vol. 3, Nagoya, Japan, October 25-29, 1993, 2069-2072.
• Y. Kitamura, H. Takemura, N. Ahuja and F. Kishino, Interference Detection Among Objects for Operator Assistance in Virtual Cooperative Workspace, 2nd IEEE Int. Workshop on Robot and Human Communication (RO-MAN?93), November 3-5, 1993, Tokyo, Japan, 442-446.
• A. Krishnan and N. Ahuja, Stereo Display of Large Scenes from Monocular Images Using a Novel Non-frontal Camera, First Asian Conference on Computer Vision, November 23-25, 1993, Osaka, Japan, 133-136.
• M. Tabb and N. Ahuja, Detection and Representation of Multiscale Low-level Image Structure Using a New Transform, First Asian Conference on Computer Vision, November 23-25, 1993, Osaka, Japan, 155-158.
• S. Sull and N. Ahuja, Integrated Matching and Segmentation of Multiple Features in Two Views, First Asian Conference on Computer Vision, November 23-25, 1993, Osaka, Japan, 213-216.
• J. Chuang, W. Lai and N. Ahuja, Skeletal Representation of 3D Objects Based on Generalized Potential Field, First Asian Conference on Computer Vision, November 23-25, 1993, Osaka, Japan, 236-239.
• K. Iwasaki, N. Ahuja and F. Kishino, Coarse-to-fine Pose Estimation Using Coarse-to-fine Filtering, First Asian Conference on Computer Vision, November 23-25, 1993, Osaka, Japan, 664-667.
• X. Hu and N. Ahuja, Mirror Uncertainty and Uniqueness Conditions for Determining Shape and Motion from Orthographic Projection, First Asian Conference on Computer Vision, November 23-25, 1993, Osaka, Japan, 272-275.
• E. Altman and N. Ahuja and F. Kishino, Hand Trajectory Recognition Using Dynamical Systems, First Asian Conference on Computer Vision, November 23-25, 1993, Osaka, Japan, 321-324.
• Y. Kitamura, H. Takemura, N. Ahuja and F. Kishino, Efficient Interference Detection Among Objects Using Octree and Polyhedral Shape Representations, First Asian Conference on Computer Vision, November 23-25, 1993, Osaka, Japan, 775-779.
• Y. Kitamura, J. Ohya, N. Ahuja and F. Kishino, Computational Taxonomy and Recognition of Facial Expressions, First Asian Conference on Computer Vision, November 23-25, 1993, Osaka, Japan, 434-437.
• N. Ahuja and T. S. Huang, IU at UI: An Overview of Research During 1993-94, Proceedings DARPA Image Understanding Workshop, November 1994, 133-142.
• N. Ahuja and T. S. Huang, IU at UI: An Overview of Research during 1990-91, Proc. DARPA Image Understanding Workshop, San Diego, January 27-29, 1992, 127-135.
• S. Sull and N. Ahuja, Integrated 3D Recovery and Visualization of Flight Image Sequences, Proc. DARPA Image Understanding Workshop, San Diego, January 27-29, 1992, 473-477.
• C. Debrunner and N. Ahuja, Motion and Structure Factorization and Segmentation of Long Multiple Motion Image Sequences, Proc. DARPA Image Understanding Workshop, San Diego, January 27-29, 1992, 543-547.
• C. Debrunner and N. Ahuja, Motion and Structure Factorization and Segmentation of Long Multiple Motion Image Sequences, Second European Conference on Computer Vision, Santa Margherita Ligure, Italy, May 18-23, 1992, 217-221.
• J. Weng, N. Ahuja and T. S. Huang, Cresceptron: A Self-Organizing Neural Network Which Grows Adaptively, Proc. Int. Joint Conf. on Neural Networks, Vol. 1, Baltimore, Maryland, June 1992, 576-581.
• M. Tuceryan, A. K. Jain and N. Ahuja, Supervised Classification of Early Perceptual Structure in Dot Patterns, 11th Int. Conf. on Pattern Recognition – Computer Vision, The Hague, August 30 – September 2, 1992, B88-91.
• X. Hu and N. Ahuja, Estimating Motion of Constant Acceleration from Image Sequences, 11th Int. Conf. on Pattern Recognition – Computer Vision, The Hague, August 30 – September 2, 1992, A655-659.
• J. Chuang and N. Ahuja, Robot Arm Path Planning Using the Newtonian Potential, Int. Conf. on Control and Robotics, Vancouver, Canada, August 14-17, 1992, 14-17.
• D. Hougen and N. Ahuja, Integration of Stereo and Shape from Shading using Color, Proc. Second International Conf. on Automation, Robotics and Computer Vision, Vol. 1, Singapore, September 15-18 1992, pp. CV-6.6.1 – CV-6.6.5.
• A. L. Abbott and N. Ahuja, The University of Illinois Active Vision System, Proc. SPIE Conf. on Applications of Artificial Intelligence XI: Algorithms, Techniques and Active Vision, Boston, November 1992, 757-768.
• X. Hu and N. Ahuja, Long Image Sequence Motion Analysis Using Polynomial Motion Models, IAPR Workshop on Machine Vision Applications, Dec 7-9, Tokyo, 1992, 109-113.
• Z. Hong and N. Ahuja, Target Tracking from Binocular Image Sequence Using the Autoregressive Moving Average Model IAPR Workshop on Machine Vision Applications, Dec 7-9, Tokyo, 1992, 317-320.
• J. Weng, T. S. Huang and N. Ahuja, Motion and Structure from Image Sequences, Springer-Verlag, 1992.
• S. Das and N. Ahuja, Integrating Mutilresolution Image Acquisition and Coarse-to-fine Surface Reconstruction from Stereo from Stereo, L. Wolff, S. Shafer and G. Healey (Eds.), Physics Based Vision, Principles and Practice: Radiometry, Jones and Bartlett, 1992, 361-367. Abstract
• J. Weng, T. S. Huang and N. Ahuja, Object Recognition by a Self-Organizing Neural Network which Grows Adaptively, Parallel Image Analysis, A. Nakamura, et.al. (ed.), Springer-Verlag, 1992, 32-33.
• J. Chuang and N. Ahuja, Path Planning using the Newtonian Potential, Proc. IEEE Conference on Robotics and Automation, Sacramento, April 8-10, 1991, 558-563.
• N. Ahuja, Issues in the Design of Integrated Vision Systems, Int. Joint Conference on Artificial Intelligence Workshop W-7, Sydney, Australia, August 24, 1991, Part III.
• X. Hu and N. Ahuja, Sufficient conditions for double or unique solution of motion and structure, Proc. IEEE Conference on Acoustics, Speech and Signal Processing, Toronto, Canada, May 14-17, 1991, 2445-2448.
• S. Sull and N. Ahuja, Estimation of Motion and Structure of Planar Surfaces from a Sequence of Monocular Images, Proc. IEEE Conference on Computer Vision and Pattern Recognition (CVPR), Maui, Hawaii, June 1991, 732-733.
• S. Sull and N. Ahuja, Segmentation, matching and estimation of structure and motion of textured piecewise planar surfaces, Proc. IEEE Workshop on Visual Motion, Princeton, New Jersey, October 7-9, 1991, 274-279.
• J. Chuang and N. Ahuja, Skeletonization Using a Generalized Potential Field Model, Proc. 8th Israeli Symposium on Artificial Intelligence and Computer Vision, December 30-31, 1991.
• N. Ahuja and T. S. Huang, IU at UI: An Overview of Research during 1991-92, Proc. DARPA Image Understanding Workshop, Washington, April 19-21, 1993, 117-125.
• A. N. Choudhary, J. H. Patel and N. Ahuja, Architecture and Performance Evaluation of NETRA, V. K. Prasanna Kumar (Ed.), Parallel Architectures and Algorithms for Image Understanding, Academic Press, 1991, 251-278.
• D. Blostein and N. Ahuja, Shape from Texture: Integrating Texture Element Extraction and Surface Estimation, R. Kasturi and R. C. Jain (Eds.), Computer Vision: Principles, IEEE Computer Society Press, Washington D. C., 1991, 325-343.(Also appears in IEEE Trans. Pattern Analysis and Machine Intelligence, December 1989, 1233-1251.)
• J. Weng, T. Huang and N. Ahuja, Motion and Structure from Two Perspective Views: Algorithm, Error Analysis, and Error Estimation R. Kasturi and R. C. Jain (Eds.), Computer Vision: Advances and Applications, IEEE Computer Society Press, Washington D. C., 1991,352-377. (Also appears in IEEE Trans. Pattern Analysis and Machine Intelligence, May 1989, 451-476. Abstract and Full Text
• C. Debrunner and N. Ahuja, A Hankel Matrix Based Motion Estimation Algorithm, 10th International Conference on Pattern Recognition – Computer Vision, Vol. 1, Atlantic City, June 1990, 384-389.
• A. N. Choudhary, S. Das, N. Ahuja, and J. H. Patel, A Reconfigurable and Hierarchical Parallel Processing Architecture: Performance Results for Stereo Vision, 10th International Conference on Pattern Recognition – Computer Vision, Vol. 2, Atlantic City, June 1990, 389-393.
• J. Weng, T. S. Huang, and N. Ahuja, Estimating Motion and Structure from Line Matches, 10th International Conference on Pattern Recognition – Computer Vision, Vol. 1, Atlantic City, June 1990, 168-172.
• S. Das and N. Ahuja, Active Stereo Based Image Acquisition and Surface Reconstruction, Proc. 5th IEEE Int. Symposium on Intelligent Control, Philadelphia, Sep 5-7, 1990, 233-238.
• N. Ahuja, IU at UI: An Overview of Research during 1988-90, Proc. DARPA Image Understanding Workshop, Pittsburgh, Sep 11-13, 1990, 134-140.
• S. Das and N. Ahuja, Integrated Multiresolution Image Acquisition and Surface Reconstruction from Active Stereo, Proc. DARPA Image Understanding Workshop, Pittsburgh, Sep 11-13, 1990, 418-422.
• E. Altman and N. Ahuja, A Dynamical Systems Approach to Integration in Stereo, Proc. DARPA Image Understanding Workshop, Pittsburgh, Sep 11-13, 1990, 423-427.
• X. Hu and N. Ahuja, A Robust Algorithm for Plane Motion Estimation, First International Conf. on Automation, Robotics and Computer Vision, Singapore, Sep 18-21, 1990.
• S. Das and N. Ahuja, Multiresolution Image Acquisition and Surface Reconstruction, Proc. 3rd Int. Conf. on Computer Vision, Osaka, Japan, Dec 4-7, 1990, 485-488.
• A. L. Abbott and N. Ahuja, Active Surface Reconstruction by Integrating Focus, Vergence, Stereo and Camera Calibration, Proc. 3rd Int. Conf. on Computer Vision, Osaka, Japan, Dec 4-7, 1990, 489-492.
• S. Das and N. Ahuja, Dynamic Integration of Visual Cues for Position Estimation, Proc. SPIE Conference on Intelligent Robots and Computer Vision IX: Neural, Biological and 3-D Methods, Vol. 1382, Boston, November 1990, 341-352.
• N. Ahuja and T. S. Huang, IU at UI: An Overview of Research during 1990-91, Proc. DARPA Image Understanding Workshop, San Diego, January 27-29, 1992, 127-135.
• A. N. Choudhary, S. Das, N. Ahuja and J. Patel, High Speed Stereo, S. Prasad and R. L. Kashyap (Eds.), Spectral Analysis in One or Two Dimensions, Vedam Books International, 1990, 577-590.
• A. N. Choudhary, S. Das, N. Ahuja and J. Patel, Surface Reconstruction from Stereo Images: An Implementation on a Hypercube Multiprocessor, Fourth Conference on Hypercube Concurrent Computers and Applications, Monterey, CA, March 1989, 1045-1052.
• J. Weng, T. Huang and N. Ahuja, Motion from Images: Image Matching, Parameter Estimation and Intrinsic Stability, IEEE Workshop on Visual Motion, Irvine, March 20-22, 1989, 359-366.
• Y. Hwang and N. Ahuja, Path Planning using a Potential Field Representation, IEEE Conference on Computer Vision and Pattern Recognition (CVPR), San Diego, June 4-8, 1989, 569-575.
• J. Weng, N. Ahuja and T. Huang, Optimal Motion and Structure Estimation, IEEE Conference on Computer Vision and Pattern Recognition (CVPR), San Diego, June 4-8, 1989, 144-152.
• S. Das, A. L. Abbott and N. Ahuja, Surface Reconstruction from Focus and Stereo, Proc. 5th International Conference on Image Analysis and Processing, Positano, Italy, September 1989.
• S. Das and N. Ahuja, Integrating Mutilresolution Image Acquisition and Coarse-to-fine Surface Reconstruction from Stereo, IEEE Workshop on Interpretation of 3D Scenes, Austin, November 26-29, 1989, 9-15.
• Y. Hwang and N. Ahuja,Path Planning Using a Potential Field Representation, Proc. IEEE International Conference on Robotics and Automation, Philadelphia, April 25-29, 1988.
• N. Ahuja and T. Huang, IU at UI: An Overview and an Example on Shape from Texture, Proc. DARPA Image Understanding Workshop, Boston, April 6-8, 1988, 222-253.
• J. Weng, N. Ahuja and T. Huang, Closed-Form Solution+Maximum Likelihood: A Robust Approach to Motion and Structure Estimation, IEEE Conf. on Computer Vision and Pattern Recognition (CVPR), Ann Arbor, June 1988, 381-386.
• J. Weng, Y. Liu, T. Huang and N. Ahuja, Determining Motion/Structure from Line Correspondences: A Robust Linear Algorithm and Uniqueness Theorems, IEEE Conf. on Computer Vision and Pattern Recognition (CVPR), Ann Arbor, June 1988, 387-392.
• J. Weng, N. Ahuja and T. Huang, Motion and Structure from Point Correspondences: A Robust Algorithm for Planar Case with Error Estimation, 9th Int. Conference on Pattern Recognition, Rome, Italy, November, 1988, 247-251.
• J. Weng, N. Ahuja and T. Huang, Two-View Matching, Second International Conference on Computer Vision, Tarpon Springs, December 5-8, 1988, 64-73.
• L. Abbott and N. Ahuja, Surface Reconstruction by Dynamic Integration of Focus, Camera Vergence and Stereo, Second International Conference on Computer Vision, Tarpon Springs, December 5-8, 1988, 532-543.
• N. Ahuja, IU at UI: An Overview of Research during 1988-90, Proc. DARPA Image Understanding Workshop, Pittsburgh, Sep 11-13, 1990, 134-140.
• W. Hoff and N. Ahuja, Extracting Surfaces from Stereo Images: An Integrated Approach, First International Conference on Computer Vision, London, England, June 8-11, 1987, 284-294.
• D. Blostein and N. Ahuja, Representation and Three-dimensional Interpretation of Image Texture: An Integrated Approach, First International Conference on Computer Vision, London, England, June 8-11, 1987, 444-449.
• J. Weng, T. Huang and N. Ahuja, Error Analysis of Motion Parameter Estimation from Image Sequences, First International Conference on Computer Vision, London, England, June 8-11, 1987, 703-707.
• S. Srivastava and N. Ahuja, An Algorithm for Generating Octrees from Object Silhouettes in Perspective Views, Proc. IEEE Workshop on Computer Vision, Miami Beach, November 30 -December 2, 1987, 363-365.
• J. Weng, T. Huang and N. Ahuja, A Two-Step Approach to Optimal Motion and Structure Estimation from Feature Correspondences, Proc. IEEE Workshop on Computer Vision, Miami Beach, November 30 -December 2, 1987, 355-357.
• M. Sharma, N. Ahuja and J. Patel, NETRA: An Architecture for a Large Scale Multiprocessor Vision System, L. Uhr (ed.), Parallel Computer Vision, Academic Press, 1987, 87-105.
• N. Ahuja, Texture Analysis, S. Shapiro (ed.), Encyclopedia of Artificial Intelligence, Wiley, 1987, 1101-1115. (Updated Versions Reprinted in second edition, 1992, 1587-1605.)
• N. Ahuja and M. Tuceryan, Dot Pattern Analysis. S. Shapiro (ed.), Encyclopedia of Artificial Intelligence, Wiley, 1987, 253-256.
• J. Veenstra and N. Ahuja, Efficient Octree Generation from Silhouettes, IEEE Conf. on Computer Vision and Pattern Recognition (CVPR), Miami, June 22-26, 1986, 537-542.
• T. S. Huang, J. Weng and N. Ahuja, 3-D Motion from Image Sequences: Modeling, Understanding and Prediction, IEEE Workshop on Motion: Representation and Analysis, Kiawah Island, May 6-9, 1986, 516-518.
• W. Hoff and N. Ahuja, Surfaces from Stereo, 8th International Conference on Pattern Recognition, Paris, France, October 28-31, 1986, 516-518.
• J. Weng, N. Ahuja and T. Huang, 3-D Motion from Image Sequences: Modeling, Estimation and Prediction, 8th International Conference on Pattern Recognition, Paris, France, October 28-31, 1986, 1107-1109.
• J. Veenstra and N. Ahuja, Octree Generation from Silhouette Views of an Object, IEEE Int. Conf. on Robotics and Automation, St. Louis, March 25-28, 1985, 843-848.
• N. Ahuja and M. Tuceryan, Extracting Perceptual Structure in Dot Patterns, IEEE Workshop on Languages for Automation: Cognitive Aspects in Information Processing, Palma de Mallorca, Spain, June 28-29, 1985, 86-91.
• W. Hoff and N. Ahuja, Generating Range Map from Stereo Images, 4th Scandinavian Conf. on Image Analysis, Trondheim, Norway, June 18-20, 1985, 761-768.
• J. Weng and N. Ahuja, Octree Representation of Objects in Arbitrary Motion, IEEE Conf. on Computer Vision and Pattern Recognition (CVPR), San Francisco, June 9-13, 1985, 524-529.
• W. Hoff and N. Ahuja, Depth from Stereo, IEEE Conf. on Computer Vision and Pattern Recognition (CVPR), San Francisco, June 9-13, 1985.
• M. Sharma, J. H. Patel and N. Ahuja, NETRA: A Multiprocessor Computer Architecture for Image Understanding, IEEE Workshop on Computer Architecture for Pattern Analysis and Image Database Management, Miami, November 18-20, 1985, 92-98.
• W. Hoff and N. Ahuja, Surfaces from Stereo, Proc. DARPA Image Understanding Workshop, Miami, December 9-10, 1985, 98-106.
• J. Veenstra and N. Ahuja, Deriving Object Octrees from Images, G. Goos and J. Hartmanis(eds.), Lecture Notes in Computer Science, 206, (same as Proc. 5th Conf. on Foundations of Software Technology and Theoretical Computer Science, December 16-18, 1985, New Delhi, India, editor: S. N. Maheshwari), Springer-Verlag, 1985, 196-211.
• N. Ahuja, Dot Pattern Perception, Proc. National Symposium on Image Signal Processing, Indian Institute of Technology, Madras, India, January 9-12, 1984.
• N. Ahuja, Efficient Planar Embedding of Trees for VLSI Layouts, IEEE Int. Conf. on Systems, Man and Cybernetics, Bombay/New Delhi, India, December 30, 1983 – January 7, 1984, Proc. 28-32.
• C. H. Debrunner and N. Ahuja, A Bottom-up Minimum Spanning Tree Algorithm for Multiprocessor Pyramid Architectures, Proc. Workshop on Algorithm-Guided Parallel Architectures for Automatic Target Recognition, Leesburg, Virginia, July 16-18, 1984, 51-78.
• N. Ahuja, Efficient Planar Embedding of Trees for VLSI layouts, Proc. 7th Int. Conf. on Pattern Recognition, Montreal, Canada, July 30 – Aug 2, 1984, 460-464.
• N. Ahuja and W. Hoff, Augmented Medial Axis Transform, Proc. IEEE Workshop on Computer Vision, Annapolis, Maryland, April 30 – May 2, 1984, 251-256.
• W. Osse and N. Ahuja, Efficient Octree Representation of Moving Objects, Proc. 7th Int. Conf. on Pattern Recognition, Montreal, Canada, July 30 – Aug 2, 1984, 821-823.
• R. Ruff and N. Ahuja, Robot Path Planning in a Three-Dimensional Environment, Proc. 7th Int. Conf. on Pattern Recognition, Montreal, Canada, July 30 – Aug 2, 1984, 188-191.
• N. Ahuja and W. Hoff, Augmented Medial Axis Transform, Proc. 7th Int. Conf. on Pattern Recognition, Montreal, Canada, July 30 – Aug 2, 1984, 336-338.
• N. Ahuja and S. Swamy, Multiprocessor Pyramid Architectures for Bottom-Up Image Analysis, A. Rosenfeld (ed.), Multiresolution Image Processing and Analysis, Volume 1, Springer-Verlag, 1984, 38-59.
• B. An, N. Ahuja and B. Schachter, Image Representation Using Voronoi Tessellation, Proc. IEEE Conf. on Computer Vision and Pattern Recognition (CVPR), Washington, D. C., June 19-23, 1983, 188-189.
• C. Nash and N. Ahuja, Updating Octrees of Translating Objects, Proc. IEEE Conf. on Computer Vision and Pattern Recognition (CVPR), Washington, D. C., June 19-23, 1983, 380-381.
• M. Tuceryan and N. Ahuja, Perceptual Segmentation of Nonhomogeneous Dot Patterns, Proc. IEEE Conf. on Computer Vision and Pattern Recognition (CVPR), Washington D. C., June 19-23, 1983, 47-52.
• H. C. Chen, N. Ahuja and T. S. Huang, Septree Representation of Moving Objects Using Hexagonal Cylinderical Decomposition, Proc. Intelligent Robots: 3rd Int. Conf. on Robot Vision and Sensory Controls, Cambridge, November 6-10, 1983.
• N. Ahuja, Efficient Planar Embedding of Trees for VLSI Layouts, IEEE Int. Conf. on Systems, Man and Cybernetics, Bombay/New Delhi, India, December 30, 1983 – January 7, 1984, Proc. 28-32.
• N. Ahuja and B. Schachter, Pattern Models, Wiley, 1983.
• N. Ahuja, N. Bridwell, C. Nash and T. S. Huang, Three-Dimensional Robot Vision, Proc. IEEE International Workshop on Industrial Applications of Machine Vision, Raleigh-Durham, May 3-5, 1982, 206-213.
• N. Ahuja and S. Swamy, Multiprocessor Pyramids for Bottom-up Image Analysis, Proc. IEEE Conf. on Pattern Recognition and Image Processing, Las Vegas, June 13-17, 1982, 380-385.
• N. Ahuja and S. Swamy, Interleaved Pyramid Architectures for Bottom-Up Image Analysis, Proc. 6th Int. Conf. on Pattern Recognition, Munich, Germany, October 19-22, 1982, 388-391.
• M. Tuceryan and N. Ahuja, Segmentation of Dot Patterns Containing Homogeneous Clusters, Proc. 6th Int. Conf. on Pattern Recognition, Munich, Germany, October 19-22, 1982, 392-394.
• N. Ahuja and A. Rosenfeld, Image Models. P. R. Krishnaiah and L. N. Kanal (eds.), Handbook of Statistics, Volume 2, North Holland, 1982, 383-397.
• N. Ahuja, Approaches to Recursive Image Decomposition, Proc. IEEE Conf. on Pattern Recognition and Image Processing, Dallas, August 3-5, 1981, 75-80.
• N. Ahuja, Mosaic Models for Textures. A. Rosenfeld (ed.), Image Modeling,Academic Press, 1981, 1-8. (Also appears in Digital Image Processing and Analysis: Vol. 1, R. Chellappa and A. Sawchuk (Eds.), IEEE Computer Society Press, Washington D. C., 1986.)
• N. Ahuja, R. T. Chien, R. Yen and N. Bridwell, Interference Detection and Collision Avoidance Among Three Dimensional Objects, Proc. 1st National Conf. on Artificial Intelligence, Stanford University, August 19-21, 1980, 44-48.
• N. Ahuja, Dot Pattern Processing Using Voronoi Polygons as Neighborhoods, Proc. 5th Int. Joint Conf. on Pattern Recognition, Miami Beach, December 1-4, 1980, 1122-1127.
• N. Ahuja, Dot Pattern Processing Using Voronoi Polygons as Neighborhoods, presented at IEEE Image Segmentation Workshop, VPI, Blacksburg, May 15-16, 1980.
• N. Ahuja and A. Rosenfeld, Mosaic Models for Textures, 18th IEEE Conf. Decision and Control, Fort Lauderdale, December 1979, Proc. 60-70.
• N. Ahuja, Connectivity in Lattices and Mosaics, Proc. 4th Int. Joint Conf. on Pattern Recognition, Kyoto, Japan, November 1978, 488-493.