Research Interests

?Computer Graphics, Computer Vision, Multimedia, Biometrics

Image Processing, Human-Computer Interface

Education

Ph.D., Computer Science, Aug 2003
University of North Carolina at Chapel Hill (UNC-CH), Chapel Hill, NC

M.S., Computer Science, February 1998
?Columbia University, New York, NY

Teaching Experience

Fall 2004, Fall 2006: Instructor
?/span>CS 635 Image Processing, the University of Kentucky

Spring 2004, Fall 2005: Instructor
?/span>CS 684 Image-based Modeling and Rendering, the University of Kentucky

Fall 2003, Spring 2005: Instructor
?/span>CS 335 Graphics and Multimedia, the University of Kentucky

Summer, 2002: Instructor

COMP 04 Power Tools of the Mind, UNC-CH

Spring, 1998:?/span>Teaching Assistant

COMP 239 Exploring Virtual World, Instructor: Henry Fuchs, UNC-CH

?/span>Fall, 1997: Teaching Assistant
?/span>CS 3823 Digital Logic, Instructor: Stephen Unger, Columbia University

Publication

Journal and book chapters

1. Ruigang Yang and Greg Welch. Fast Image Segmentation and Smoothing Using Commodity Graphics Hardware, Journal of Graphics Tools, special issue on "Hardware-Accelerated Rendering Techniques", 7(4):91-100, 2003.

2. Yang, Ruigang, Marc Pollefeys, Hua Yang and Greg Welch. A Unified Approach to Real-Time, Multi-Resolution, Multi-Baseline 2D View Synthesis and 3D Depth Estimation using Commodity Graphics Hardware, International Journal of Image and Graphics (IJIG), 4(4): 1-25 (invited submission).

3. Ruigang Yang and Greg Welch, Real-Time Consensus-Based Scene Reconstruction using Commodity Graphics Hardware, Computer Graphics Forum 2004 (invited submission).

4. Ruigang Yang and Zhengyou Zhang, Eye Gaze Correction with Stereovision for Video-Teleconferencing, IEEE Transactions on Pattern Analysis and Machine Intelligence (PAMI), 26(7): 956-960, 2004

5. Greg Welch, Ruigang Yang, Sascha Becker, Adrian Ilie, Dan Russo, Jesse Funaro,?Andrei State, Kok-Lim Low, Anselmo Lastra, Herman Towles, Bruce Cairns M.D., Henry Fuchs and Andy van Dam, Immersive Electronic Books for Surgical Training, in IEEE Multimedia, 12(3):22-35, 2005

6. Michael S. Brown, Aditi Majumder, Ruigang Yang, Camera-Based Calibration Techniques for Seamless Multi-Projector Displays, in IEEE Transactions on VISUALIZATION AND COMPUTER GRAPHICS (TVCG), 11(2): 193-206, 2005.

7. Ruigang Yang and Marc Pollefeys, A Versatile Stereo Algorithm on Graphics Hardware, Journal of Real-time Imaging, 11(1), 7-18, 2005.

8. Daniel L. Lau and Ruigang Yang, Real-Time Multispectral Color Video Recording Using Off-the-Shelf Cameras, Journal of Real-time Imaging, 11(2):109-116, 2005.

9. Ruigang Yang, Herman Towles, Andrew Nashel, Celso Setsuo Kurashima, and Marcelo Knörich Zuffo Immersive Video Teleconferencing with User-Steerable Views, to appear in the Presence: Teleoperators and Virtual Environments.

10. Greg Welch, Diane Sonnenwald, Ketan Mayer-Patel, Ruigang Yang, Andrei State, Herman Towles, Bruce Cairns, and Henry Fuchs, ?i style='mso-bidi-font-style:normal'>Remote 3D Medical Consultation,?to appear in the Journal of Mobile Multimedia (JMM).

11. Ruigang Yang, David Guinnip, and Liang Wang, View-Dependent Textured Splatting, the Visual Computer, 22(7): 456-467, 2006.

12. Zhengyou Zhang, Zicheng Liu, and Ruigang Yang, ?i style='mso-bidi-font-style:normal'>Model-based Face Modeling and Tracking With Application to Videoconferencing? in W. Zhao and R. Chellappa, editors, Face Processing: Advanced Modeling and Methods, Chapter 15, pp. 463-517, Academic Press, Elsevier, 2006.

13. Liang Wang, Ruigang Yang, James E. Davis: BRDF Invariant Stereo Using Light Transport Constancy, to appear in IEEE Transactions on Pattern Recognition and Machine Intelligence (PAMI)?

14. Huaming Wang,?Mingxuan Sun, and Ruigang Yang, ?i style='mso-bidi-font-style:normal'>Space-time Light Field Rendering? to appear in IEEE Transactions on Visualization and Computer Graphics (TVCG)

Conference

1. Ruigang Yang and Peter Allen, Registering, Integrating, and Building CAD Models from Range Data, IEEE International Conference on Robotics and Automation '98, Belgium.

2. Ruigang Yang, Michael S. Brown, W. Brent Seales, Henry Fuchs. Geometrically Correct Imagery for Teleconferencing, in Proceedings from the Seventh ACM International Conference on Multimedia, October 30 - November 5, 1999.

3. Ramesh Raskar, Michael S. Brown, Ruigang Yang, Wei-Chao Chen, Greg Welch, Herman Towles, Brent Seales, Henry Fuchs, Multi-Projector Displays Using Camera-Based Registration, Proceedings of IEEE Visualization 99, pp. 161-168.

4. Ruigang Yang and Greg Welch, Automatic Projector Display Surface Estimation Using Every-Day Imagery, presented by Herman Towles at the 9th International Conference in Central Europe on Computer Graphics, Visualization and Computer Vision 2001. Plzen, Czech Republic.

5. Ruigang Yang, David Gotz, Justin Hensley, Herman Towles and Mike Brown. PixelFlex: A Reconfigurable Multi-Projector Display System. IEEE Visualization 2001.

6. Ruigang Yang and Zhengyou Zhang, Eye Gaze Correction with Stereovision for Video-Teleconferencing, The seventh European Conference on Computer Vision (ECCV 2002)?May 27 ?June 2, 2002, Copenhagen, Denmark.

7. Ruigang Yang and Zhengyou Zhang. Model-based Head Pose Tracking With Stereovision, in the Fifth IEEE International Conference on Automatic Face and Gesture Recognition 2002 (FG 2002), May 20?1, 2002, Washington, D.C.

8. Kurashima, Celso, Ruigang Yang, and Anselmo Lastra. Combining Approximate Geometry with View-Dependent Texture Mapping - A Hybrid Approach to 3D Video Teleconferencing, SIBGRAPI 2002, XV Brazilian Symposium on Computer Graphics and Image Processing (07 - 10 October 2002, Fortaleza, CE, Brazil)

9. Ruigang Yang, Greg Welch, Gary Bishop. Real-Time Consensus-Based Scene Reconstruction using Commodity Graphics Hardware, in Proceedings of Pacific Graphics 2002. Tsinghua University, Beijing, China (October 9-11, 2002). A short version in Technical Sketch SIGGRAPH 2002.

10. Andries van Dam, Henry Fuchs, Sascha Becker, Loring Holden, Adrian Ilie, Kok-Lim Low, Anne Morgan Spalter, Ruigang Yang, and Greg Welch. Immersive Electronic Books for Teaching Surgical Procedures, in Proceedings of CREST Symposium, ICAT 2002. The University of Tokyo, Tokyo, Japan (Dec 3, 2002).

11. Ruigang Yang, Celso Kurashima, Andrew Nashel, Herman Towles, Anselmo Lastra, Henry Fuchs, Creating Adaptive Views for Group Video Teleconferencing? -- An Image-Based Approach, International Workshop on Immersive Telepresence (ITP 2002) December 6, 2002, Juan Les Pins, France.

12. Herman Towles, Wei-Chao Chen, Ruigang Yang, Sang-Uok Kum, Henry Fuchs, Nikhil Kelshikar, Jane Mulligan, Kostas Daniilidis, Loring Holden, Bob Seleznik, Amela Sadagic, Jaron Lanier, 3D Tele-Collaboration Over Internet2, International Workshop on Immersive Telepresence (ITP 2002) December 6, 2002, Juan Les Pins, France.

13. Ruigang Yang and Marc Pollefeys. Multi-Resolution Real-Time Stereo on Commodity Graphics Hardware, pp211-218, CVPR 2003

14. Ruigang Yang, Marc Pollefeys, and Greg Welch. Dealing with Textureless Regions and Specular Highlights—A Progressive Space Carving Scheme Using a Novel Photo-consistency Measure, pp 576-584, ICCV 2003

15. Ruigang Yang, Marc Pollefeys, Sifang Li, Improved Real-Time Stereo on Commodity Graphics Hardware, IEEE Workshop on Real Time 3D Sensors and Their Use (In conjunction with CVPR '04)

16. David Guinnip and Shuhua Lai, Ruigang Yang, View-Dependent Textured Splatting for Rendering Live Scenes, SIGGRAPH Poster, 2004.

17. Ruigang Yang, Andrew Nashel, and Herman Towles, Towards 3D Video-teleconferencing, ACM Workshop on Effective Telepresence (ETP 2004).

18. Ruigang Yang, Scientific Computing Using Graphics Hardware, International Symposium on Computational and Information Sciences (CIS'04) 2004, Shanghai, China.

19. D. L. Lau, R. Yang, A. M. Tan, W. Su, and L. G. Hassebrook, Multi-Spectral Color Acquisition and Display Using Commodity Hardware, Proceedings of Applications of Digital Image Processing XXVII, SPIE, vol. 5558-69, Denver, Colorado, August 2004.

20. Greg Welch, Ruigang Yang, Bruce Cairns, M.D., Herman Towles, Andrei State, Adrian Ilie, Sascha Becker, Dan Russo, Jesse Funaro, Diane Sonnenwald, Ketan Mayer-Patel,B. Danette Allen, Hua Yang, Eugene Freid, M.D., Andy van Dam, and Henry Fuchs. 3D Telepresence for Off-Line Surgical Training and On-Line Remote Consultation. Proceedings of ICAT CREST Symposium on Telecommunication, Teleimmersion, and Telexistence, December 2004.

21. Ruigang Yang,, Shunnan Chen, Xinyu Huang, Sifang Li, Liang Wang, and Chris Jaynes, Towards the Light Field Display, VR 2005 workshop on Emerging Display Technologies.

22. Huaming Wang and Ruigang Yang, Towards Space-time Light Field Rendering, in ACM SIGGRAPH 2005 Symposium on Interactive 3D Graphics and Games, pp 125 ?132, 2005.

23. Minglun Gong and Ruigang Yang: Image-Gradient-Guided Real-Time Stereo on Graphics Hardware. 3DIM 2005: 548-555

24. Mingxuan Sun, Ruigang Yang, Lin Yun, George Landon, W. Brent Seales, Michael S. Brown: Geometric and Photometric Restoration of Distorted Documents. ICCV 2005: 1117-1123

25. James E. Davis, Ruigang Yang, Liang Wang: BRDF Invariant Stereo Using Light Transport Constancy. ICCV 2005: 436-443

26. David Guinnip, Ruigang Yang, and Liang Wang, View-Dependent Textured Splatting , (short paper) Pacific Graphics 2005

27. Joan Mazur, Ruigang Yang, Mingxuan Sun, Rebecca Kayrouz, 3-D Graphical Hypermedia Meets Interactive E-Books: A New Paradigm for Experiential Learning, Edutainment 2006, 233-242, Hangzhou, China

28. A. Akbarzadeh, J.-M. Frahm, P. Mordohai, B. Clipp, C. Engels, D. Gallup, P. Merrell, M. Phelps, S. Sinha, B. Talton, L. Wang, Q. Yang, H. Stewenius, R. Yang, G. Welch, H. Towles, D. Nister and M. Pollefeys, Towards Urban 3D Reconstruction From Video, Third International Symposium on 3D Data Processing, Visualization and Transmission (3DPVT), 2006

29. Liang Wang, Miao Liao, Minglun Gong, Ruigang Yang and David Nister, High Quality Real-time Stereo using Adaptive Cost Aggregation and Dynamic Programming, Third International Symposium on 3D Data Processing, Visualization and Transmission (3DPVT), 2006

30. Liang Wang, Mingwei Gong, Minglun Gong and Ruigang Yang, How Far Can We Go with Local Optimization in Real-Time Stereo Matching, Third International Symposium on 3D Data Processing, Visualization and Transmission (3DPVT), 2006

31. Qìngxióng Yáng, Liang Wang, Ruigang Yang, Henrik Stewénius, and David Nistér, Stereo Matching with Color-Weighted Correlation, Hierarchical Belief Propagation and Occlusion Handling, CVPR 2006, 2347-2354.

32. Ruigang Yang, Xinyu Huang, Sifang Li, Christopher Jaynes, Toward the Light Field Display: Autostereoscopic Rendering via a Cluster of Projectors, Eurographics (short-paper), 2006

33. Miao Liao, Mingxuan Sun, Ruigang Yang, and Zhengyou Zhang, Robust and Accurate Visual Echo Cancelation in a Full-duplex Projector-camera System, International workshop on projector-camera systems (in conjunction with CVPR), 2006

34. Qingxiong Yang, Liang Wang, Ruigang Yang, Shengnan Wang, Miao Liao, David Nistér, Real-time Global Stereo Matching Using Hierarchical Belief Propagation, BMVC 2006

Invention Disclosures and Patents

?span style='font:7.0pt "Times New Roman"'> Head Pose Tracking System, with Zhengyou Zhang (Microsoft Research), patent pending (filed in May 2002).

?span style='font:7.0pt "Times New Roman"'> Video-Teleconferencing System with Eye-gaze Correction, with Zhengyou Zhang (Microsoft Research), US patent 6771303.

?span style='font:7.0pt "Times New Roman"'> Real-time Sparse Light Field Rendering Using Graphics Hardware, undergoing disclosure at UNC-CH with Greg Welch (UNC).

?span style='font:7.0pt "Times New Roman"'> Real-time Stereo Using Graphics Hardware

Invention disclosure at the University of Kentucky (2004) (licensed to one company)

?span style='font:7.0pt "Times New Roman"'> FlexView3D—a New Auto Stereoscopic Display Architecture.

Invention disclosure at the University of Kentucky (2005)

?span style='font:7.0pt "Times New Roman"'> Anywhere Pixel Compositor using the Digital Visual Interface (DVI), Invention disclosure at the University of Kentucky (2006)

?span style='font:7.0pt "Times New Roman"'> High-definition home theater with multiple projectors. Invention disclosure at the University of Kentucky (2006)

?span style='font:7.0pt "Times New Roman"'> High-quality Stereovision. Invention disclosure at the University of Kentucky (2006)

?span style='font:7.0pt "Times New Roman"'> Light Attenuation Stereo. Invention disclosure at the University of Kentucky (2006)

Awards and Activities

?span style='font:7.0pt "Times New Roman"'> NSF CAREER Award, 2005

?span style='font:7.0pt "Times New Roman"'> Link Foundation Fellowship, 2002

?span style='font:7.0pt "Times New Roman"'> Finalist for NVIDA Fellowship, 2002

?span style='font:7.0pt "Times New Roman"'> Motorola Scholarship, Tsinghua University, Beijing, China, 1994

?span style='font:7.0pt "Times New Roman"'> Excellent Student Scholarship, First Prize, Tsinghua University, 1993, 1995

?span style='font:7.0pt "Times New Roman"'> Member, Graduate Admissions Committee, Department of Computer Science, UNC-CH, 2002-2003

?span style='font:7.0pt "Times New Roman"'> Session Chair for

?span style='font:7.0pt "Times New Roman"'> International Symposium on Computational and Information Sciences (CIS'04) 2004, Shanghai, China.

?span style='font:7.0pt "Times New Roman"'> Third International Symposium on 3D Data Processing, Visualization and Transmission (3DPVT), 2006, North Carolina

?span style='font:7.0pt "Times New Roman"'> Panelist for IEEE VR 2005 International Workshop on Emerging Display Technologies (in conjunction with VR 2005)

?span style='font:7.0pt "Times New Roman"'> Program committee member of

?span style='font:7.0pt "Times New Roman"'> ACM SIGMM Workshop on Experiential Telepresence (2003, 2004)

?span style='font:7.0pt "Times New Roman"'> CVPR 2005, 2006

?span style='font:7.0pt "Times New Roman"'> IEEE Workshop on Real Time 3D Sensors and Their Use (in conjunction with CVPR 2005)

?span style='font:7.0pt "Times New Roman"'> 15th International Conference on Artificial Reality and Telexistence, 2005

?span style='font:7.0pt "Times New Roman"'> Edutainment 2006, International Conference on E-learning and Games

?span style='font:7.0pt "Times New Roman"'> ICCV 2005

?span style='font:7.0pt "Times New Roman"'> ECCV 2006

?span style='font:7.0pt "Times New Roman"'> ACCV 2006

?span style='font:7.0pt "Times New Roman"'> Computer Graphics and Interfaces, 2006

?span style='font:7.0pt "Times New Roman"'> 3DPVT 2006

?span style='font:7.0pt "Times New Roman"'> ICPR 2006

?span style='font:7.0pt "Times New Roman"'> Reviewer for

?span style='font:7.0pt "Times New Roman"'> International Journal of Computer Vision, PAMI

?span style='font:7.0pt "Times New Roman"'> Pattern Recognition Letter

?span style='font:7.0pt "Times New Roman"'> Machine Vision and Applications

?span style='font:7.0pt "Times New Roman"'> IEEE –Computer Vision and Pattern Recognition (CVPR), Transactions on Multimedia, Visualization, Robotics and Automation

?span style='font:7.0pt "Times New Roman"'> International Workshop on Immersive Telepresence (with ACM Multimedia)

?span style='font:7.0pt "Times New Roman"'> ACM SIGGRAPH, Eurographics, I3D

Grants and Contracts

?span style='font:7.0pt "Times New Roman"'> PI, ?i style='mso-bidi-font-style:normal'>Supercomputing using Commodity Graphics Processing Units with Applications to Information Retrieval? $15K, Kentucky Science & Engineering Foundation, ?/span>2004-2005

?span style='font:7.0pt "Times New Roman"'> Co-PI, ?i style='mso-bidi-font-style:normal'>Rapidly Deployable Visualization and Training Systems? $1.0M, United States Army, and US Dept. of Defense, Fort Knox Mounted Battle Laboratory, 2004-2005

?span style='font:7.0pt "Times New Roman"'> Co-PI, ?st1:place w:st="on">Active & Passive Range Sensor Fusion for Automated Surveillance & Face Recognition? Department of Homeland Security, $654,668, 2005-2006

?span style='font:7.0pt "Times New Roman"'> Co-PI, ?i style='mso-bidi-font-style:normal'>Rapidly Deployable Displays for Emergency Response? Department of Homeland Security, $251,630, 2005-2006

?span style='font:7.0pt "Times New Roman"'> PI, ?i style='mso-bidi-font-style:normal'>Three-Dimensional Light Field Display for Advanced Simulation & Training? Department of Homeland Security, $285,085, 2005-2006.

?span style='font:7.0pt "Times New Roman"'> Co-PI, ?i style='mso-bidi-font-style:normal'>The Smart-Image Pipeline? US Army Medical Research and Materiel Command, $144,180, 2006.

?span style='font:7.0pt "Times New Roman"'> Co-PI, “UrbanScape? $995k, DARPA (sub-contract from GSTI), 2005-2007

?span style='font:7.0pt "Times New Roman"'> PI, ?i style='mso-bidi-font-style:normal'>The Light Portal?D Reconstruction and Visualization over Space and Time??$580K, NSF, 2005-2009

?span style='font:7.0pt "Times New Roman"'> PI, “Wide-Area Rapid Iris Image Capture with Pan-Tilt-Zoom Cameras,?$731,827, Department of Homeland Security, 2005-2007

?span style='font:7.0pt "Times New Roman"'> Co-PI, ?/span>Privacy-Protecting Video Surveillance,?$694,613, Department of Homeland Security, 2005-2007

?span style='font:7.0pt "Times New Roman"'> Co-PI, “Anti-Sniper Infrared Targeting System- Phase II? $250K, M2 Technologies, 2006.

?span style='font:7.0pt "Times New Roman"'> Co-PI, ?i style='mso-bidi-font-style:normal'>The Smart-Image Pipeline, PY4? US Army Medical Research and Materiel Command, $348,947, 2006.

?span style='font:7.0pt "Times New Roman"'> Co-PI, ?/span>Large Rapidly Deployable Immersive Visualization and Training Systems for Urban Terrains? $910,332, United States Army, and US Dept. of Defense, Fort Knox Mounted Battle Laboratory, 2006-2007

?span style='font:7.0pt "Times New Roman"'> Co-PI, “Anti-Sniper Infrared Tracking System Phase IIIa, from M2 Technologies? ?/span>$922,000,? August 1, 2006-February 1, 2007.

?span style='font:7.0pt "Times New Roman"'> Hardware/software donations from NVIDIA, Microsoft, ATI, Xilinx

Professional Experience

July, 2003 ?current: ?/span>Assistant Professor

Department of Computer Science

The University of Kentucky

January, 1998 ?May, 2003: Graduate Research Assistant

The Office of the Future project

Principle Investigator: Prof. Henry Fuchs, Prof. Greg Welch, and Herman Towles

Research on large format displays, 2D/3D video teleconferencing, telepresence, 3D scene reconstruction, real-time stereo, view synthesis.

May ?August, 2001: ?Summer Internship at Microsoft Research

Supervisor: Dr. Zhengyou Zhang

Developed new algorithms and systems to correct the eye gaze for desktop video teleconferencing.

May ?December, 1997: Software Engineer at mail.com, NYC.
Designed and implemented a web-based email client, over 10k lines of C++ code.

January ?December, 1997: Graduate Research Assistant
Advisor: Prof. Peter Allen, Columbia University

Research in laser range data acquisition and registration

Dec. 1996 ?Feb., 1997:?/span>PC administrator
Division of Surgery, Columbia University, New York

References

Available upon request