Visualization of Time-Varying Curvilinear Grids Using a 3D Warp Texture
Yuan Chen,  Jonathan D.Cohen and Subodh Kumar
Proceedings of Vision, Modeling, and Visualization 2005 (10th International Fall Workshop). 9 pages (to appear).
[Paper-1.1MB pdf]

A Relational Debugging Engine for the Graphics Pipeline
Nathaniel Duca, Krzysztof Niski,  Jonathan Bilodeau, Matthew Bolitho, Yuan Chen, and Jonathan D.Cohen
ACM Transactions on Graphics (Proceedings of SIGGRAPH 2005). 24 (3). 11 pages
[Paper-2.5MB pdf]  [Video-45MB mov]

Hardware-Compatible Vertex Compression Using Quantization and Simplification
Budirijanto Purnomo,  Jonathan Bilodeau,   Jonathan D.Cohen, and Subodh Kumar
Proceedings of ACM SIGGRAPH/Eurographics Symposium on Graphics Hardware 2005. 10 pages.
[Paper-2.4MB pdf]

vLOD: High-Fidelity Walkthroughs of Large Virtual Environments
Jatin Chhugani, Budirijanto Purnomo, Shankar Krishnan, Jonathan D.Cohen, Suresh Venkatasubramanian, David Johnson, and Subodh Kumar,
IEEE TVCG January/February, 2005
[Paper-4.3MB pdf]

iClay: Digitizing Cuneiform
 Jonathan D. Cohen, Dean Snyder, Donald Duncan, Jerrold Cooper, Subodh Kumar, Daniel Hahn, 
Yuan Chen, Budirijanto Purnomo and John Graettinger, VAST , 2004
[Paper-856KB pdf]

On the Visualization of Time-Varying Structured Grids Using a 3D Warp Texture
Yuan Chen, Jonathan D. Cohen and Subodh Kumar
 Poster and Interactive Demos at IEEE Visualization 2004, Best Poster Award.

Budget Based Sampling of Parametric Surface Patches
J. Chhugani and S.Kumar.
ACM 3D Interactive Graphics 2003
[Paper – 239KB pdf]

Successive Mappings: An Approach to Polygonal Mesh Simplification with Guaranteed Error Bounds
Jonathan D. Cohen, Dinesh Manocha, and Marc Olano
International Journal of Computational Geometry and Applications. 13 (1). February 2003. pp. 61-94.
[Paper - 5.3 MB pdf]

Perceptually Driven Simplification of Lit, Textured Meshes
Nathaniel Williams, David Luebke, Jonathan D. Cohen, Mike Kelly, and Brenden Schubert
Proceedings of 2003 ACM Symposium on Interactive 3D Graphics. pp. 113-121. (selected for cover image)
[Paper - 5.5 MB pdf] [Video - 96 MB mpg]

GLOD: A Geometric Level of Detail System at the OpenGL API Level. 
Jonathan D. Cohen, Nathaniel Duca, David Luebke, Brenden Schubert 
IEEE Visualization 2003, Seattle, WA (2003), Best poster award.

ISOSLIDER: A System for Interactive Exploration of IsoSurfaces 
Jatin Chhugani, Sudhir Vishwanath, Jonathan D. Cohen and Subodh.Kumar.
VisSym 2003. pp. 259--266. 
[Paper]

Interactive Visualization of Unstructured Grids Using Hierarchical 3D Textures
Joshua Leven, Jason Corso, Jonathan D. Cohen, Subodh Kumar
Proceedings of IEEE/SIGGRAPH Symposium on Volume Visualization and Graphics 2002. pp. 37-44.
[Paper - 2.6 MB pdf] [Video - 38.2 MB mpg]

Hybrid Simplification: Combining Multi-resolution Polygon and Point Rendering
Jonathan D. Cohen, Daniel G. Aliaga, and Weiqiang Zhang
Proceedings of IEEE Visualization 2001. pp. 37-44 and 539.
[Paper - 1.4 MB pdf] [Video - 59 MB mpg]

View-Dependent Adaptive Tessellation of Parametric Surfaces
J. Chhugani and S.Kumar.
ACM Symposium on 3D Interactive Graphics, 2001. pp 59--62

Efficient Perspective-Accurate Silhouette Computation
M. Pop, W. Huang, G. Barequet, C. Duncan, M. Goodrich and Subodh Kumar
ACM Computational Geometry. 2001. pp 60—68.
[Paper - ps.gz]

Collision Detection:

• V-Collide: Accelerated Collision Detection for VRML
  T. Hudson, M. Lin, J. Cohen, S. Gottschalk, and D. Manocha
  Proceedings of VRML ?97
  [Paper - 0.2 MB pdf] [Software] [Web Page]

• Collision Detection for Interactive Environments
  Jonathan D. Cohen, Ming C. Lin, Dinesh Manocha, Madhav K. Ponamgi
  The 3rd Annual Video Review of Computational Geometry. 1994.
  [Video (portions of the original plus some torii) - 1.1 MB mpg)]

• Collision Detection: Algorithms and Applications
  Ming Lin, Dinesh Manocha, Jonathan Cohen and Stefan Gottschalk
  Proceedings of Algorithms for Robotics Motion and Manipulation. pp. 129-142. eds. Jean-Paul Laumond and M. Overmars, A.K. Peters (invited submission)
  [Paper - 0.4 MB pdf] [Paper - 0.2 MB ps (gzipped)]

• I-COLLIDE: an Interactive and Exact Collision Detection System for Large Scale Environments
  Jonathan D. Cohen, Ming C. Lin, Dinesh Manocha, and Madhav K. Ponamgi
  Proceedings of the 1995 Symposium on Interactive 3D Graphics (Monterey, CA, April 9-12, 1995), pp. 189-196.
  [Paper - 0.3 MB pdf] [Paper - 1.3 MB ps (gzipped)] [Software] [Web Page]

Large Model Rendering:

• Accelerated walkthrough
  S. Kumar, Dinesh Manochs, H. Zhang and K. Hoff.
  1997 Symposium on Interactive 3D Graphics

• MMR: An Interactive Massive Model Rendering System using Geometric and Image-based Acceleration
  Daniel Aliaga, Jonathan Cohen, Andrew Wilson, Eric Baker, Hansong Zhang, Carl Erikson, Kenneth Hoff, Thomas Hudson, Wolfgang Stuerzlinger, Rui Bastos, Mary Whitton, Frederick Brooks, and Dinesh Manocha
  Proceedings of the 1999 ACM Symposium on Interactive 3D Graphics, pp. 199-206 and 237.
  [Paper - 1.3 MB pdf]

• A Framework for the Real-time Walkthrough of Massive Models
  Daniel Aliaga, Jonathan Cohen, Andrew Wilson, Hansong Zhang, Carl Erikson, Kenneth Hoff, Thomas Hudson, Wolfgang Stuerzlinger, Eric Baker, Rui Bastos, Mary Whitton, Frederick Brooks, and Dinesh Manocha
  UNC Technical Report 98-013. 1998.
  [Paper - 0.7 MB pdf]

Polygonal Simplification:

• Successive Mappings: An Approach to Polygonal Mesh Simplification with Guaranteed Error Bounds
  Jonathan D. Cohen, Dinesh Manocha, and Marc Olano
  to appear in International Journal of Computational Geometry and Applications
  [Paper (preliminary version) - 5.3 MB pdf] [Paper (preliminary version) - 5.9 MB ps (gzipped)]

• Concepts and Algorithms for Polygonal Simplification
  Jonathan D. Cohen
  SIGGRAPH 99 Course Tutorial #20: Interactive Walkthroughs of Large Geometric Datasets. pp. C1-C34. 1999. also in SIGGRAPH 2000 Course Tutorial.
  [Paper - 1.2 MB pdf]

• Appearance-Preserving Simplification of Polygonal Models
  Jonathan D. Cohen
  Ph.D. Dissertation. University of North Carolina at Chapel Hill. 1998.
  [Paper - 17.3 MB pdf] [Paper (low resolution) - 0.9 MB pdf]

• Appearance-Preserving Simplification
  Jonathan Cohen, Marc Olano, and Dinesh Manocha
  Proceedings of SIGGRAPH 98. (Orlando, FL, July 19-24, 1998). pp. 115-122.
  [Paper - 3.5 MB pdf] [Web Page]

• Simplifying Polygonal Models Using Successive Mappings
  Jonathan Cohen, Dinesh Manocha, and Marc Olano
  Proceedings of IEEE Visualization '97. pp. 395-402, and 564.
  [Paper - 2.5 MB pdf] [Web Page]

• Simplification Envelopes
  Jonathan Cohen, Amitabh Varshney, Dinesh Manocha, Greg Turk, Hans Weber, Pankaj Agarwal, Frederick Brooks, and William Wright
  Proceedings of SIGGRAPH 96 (New Orleans, LA, August 4-9, 1996). pp. 119-128.
  [Paper - 0.4 MB pdf] [Software - 3.7 MB zip] [Web Page]

Tessellation:

• Robust Incremental Polygon Triangulation for fast Surface Rendering
  S. Kumar
  WSCG'2000: The 8-th International Conference in Central Europe on Computer Graphics, Visualization and Interactive Digital Media, "Plzen, Czech Republic",pp. 303--312, 2000

• View-dependent Adaptive Tessellation of Parametric Models
  J. Chhugani and S. Kumar,   2001

• Interactive Visualization of Triangular Bezier Surfaces
  S. Kumar.
  ICVGIP 1998.

• Interactive Display of Large-Scale NURBS Models.
  S. Kumar, D. Manocha and A. Lastra.
  IEEE Transactions on Visualization and Computer Graphics, 2(4), Dec 1996.

• Accelerated walkthrough
  S. Kumar, Dinesh Manochs, H. Zhang and K. Hoff.
  1997 Symposium on Interactive 3D Graphics

• The Power of Coherence: Fast Surfaces tessellation.
  S. Kumar and D. Manocha.
  5th Annual Video Review of Computational Geometry (at 12th annual symposium on Computational Geometry), Philadelphia, Pennsylvania. May 1996.

• Dynamic Mesh Generation for Parametric iso-Surfaces.
  S. Kumar and D. Manocha.
  Proceedings of 5th international conference on Numerical Grid Generation in Computational Fluid Dynamics and Related Fields , Starkville, Mississippi. April, 1996.

• Interactive Display of Large Solid Models for Walkthroughs.
  S. Kumar and D. Manocha.
  IEEE Computer Graphics and Applications , March 1996.

•  High Speed and High Fidelity Visualization of Complex CSG Models
  S. Kumar, S. Krishnan, D. Manocha, and A. Narkhede.
  Proceedings of the BCS International Conference on Visualization and Modeling , Leeds, UK, December 1995.

• Efficient Rendering of Trimmed NURBS Surfaces.
  S. Kumar and D. Manocha.
  Computer-Aided Design 27(7), July 1995, pp 509--521.

• Interactive Display of Large-Scale NURBS Models.
  S. Kumar, D. Manocha and A. Lastra.
  Proceedings of the 1995 Symposium on Interactive 3D Computer Graphics , Monterey, CA, April 1995, pp 51--58.

Visibility:

• Hierarchical Visibility Culling for Spline Models.
  S. Kumar and D. Manocha.
  Proceedings of Graphics Interface , Toronto, Canada, May 1996.

• Accelerated Occlusion Culling Using Shadow Frusta
  T. Hudson, D. Manocha, J. Cohen, M. Lin, K. Hoff, and H. Zhang
  Proceedings of the Thirteenth Annual Symposium on Computational Geometry. 1997.
  [Paper - 0.3 MB pdf] [Paper - 0.3 MB ps (gzipped)]

• Hierarchical Back-Face Culling
  S. Kumar and D. Manocha and W. Garrett and M. Lin
  Computers and Graphics,  VOLUME 23,  pp 681--692,   1999

Miscellaneas:

• Robust Incremental Polygon Triangulation for fast Surface Rendering
  S. Kumar
  WSCG'2000: The 8-th International Conference in Central Europe on Computer Graphics, Visualization and Interactive Digital Media, "Plzen, Czech Republic",pp. 303--312, 2000

• Repairing CAD models
  S. Kumar, C. Chang and D. Manocha.
  Proc. IEEE Visualization, 1997.

• Load balancing
  S. Kumar, C. Chang and D. Manocha.
  Supercomputing '96.

• Connected-Components algorithms for Mesh-Connected Parallel Computers.
  S. Kumar, S. Goddard, and J. Prins.
  Third DIMACS Parallel Challenge , ed. Sandeep Bhatt. Academic Press, 1997.

• Uniform Frequency Images: Adding Geometry to Images to Produce Space-Efficient Textures
  Adam Hunter and Jonathan D. Cohen Proceedings of IEEE Visualization 2000. pp. 243-250 and 563.
  [Paper - 5.5 MB pdf] [CD-ROM data - 13.8 MB zip]

• Combatting Rendering Latency
  Marc Olano, Jon Cohen, Mark Mine, Gary Bishop
  Proceedings of the 1995 Symposium on Interactive 3D Graphics (Monterey, CA, April 9-12, 1995). pp. 19-24 and 204.
  [Paper - 0.1 MB pdf] [Paper - 0.5 MB ps (gzipped)]