JOURNAL

GPU-based Tiled Ray Casting using Depth Peeling
F. Bernardon, C. Pagot, J. Comba, C. Silva
Journal of Graphics Tools (to appear).

Practical CFD Simulations on Programmable Graphics Hardware Using SMAC
C. Scheidegger, J. Comba, R. Cunha
Computer Graphics Forum, Volume 24, Issue 4, 2005. Editors P. Brunet and H. P. Seidel. ISSN 0167-7055. (to appear)

GPU-Based Volume Rendering of Unstructured Grids.
J. Comba, C.  Silva, F. Bernardon, S. Callahan.
Revista de Informática Teórica e Aplicada. ISSN 01034308.  October 2005. 

Real-Time Relief Mapping on Arbitrary Polygonal Surfaces
F. Policarpo, M. Oliveira Neto, J. Comba
ACM Transaction on Graphics (Special Issue: Proceedings of Siggraph 2005). Volume 24, Issue 3 (July 2005). ISSN: 0730-0301. (abstract)

Hardware-Assisted Visibility Sorting for Unstructured Volume Rendering
S. Callahan, M. Ikits, J. Comba, and C. Silva
IEEE Transactions on Visualization and Computer Graphics. Pages 285-298, Vol 11, No. 3, May/June 2005. ISSN 1077-2626.

Computation on GPUs: from a programmable pipeline to an efficient stream processor
J. Comba, C. Dietrich, C. Pagot, C. Scheidegger
Revista de Informática Teórica e Aplicada, v. 10, n.1, pages 41-70, 2003. ISSN 01034308.

Real-Time Volume Rendering of Dynamic Data Using Graphics Hardware
A. Binotto, J. Comba, C. Freitas
Scientia, v. 13, n. 2, p.31-42, July-December 2002. ISSN 0104-1770.

Special Effects with Current Graphics Hardware
J. Comba, R. Bastos.
Revista de Informática Teórica e Aplicada, v. 8, n.2, 2001, pages 69-88, October 2001. ISSN 01034308.

Fast Polyhedral Cell Sorting for Interactive Rendering of Unstructured Grids     
J. Comba, J. Klosowsky, N. Max, J. Mitchel, C. Silva, P. Williams.
Computer Graphics Forum, Volume 18, Issue 3, pages 367-376, 1999. Editors P. Brunet and R. Scopigno. ISSN 0167-7055.

 

CONFERENCE PAPERS


Interactive Rendering of Large Unstructured Grids Using Dynamic Level-Of-Detail 
S. Callahan, J. Comba, P. Shirley and C. Silva  
Proceedings of IEEE Visualization 2005, October 2005 (to appear).


Boolean Operations on Surfel-Bounded Objects using Constrained BSP-Trees
M. Farias, C. Scheidegger, J. Comba, L. Velho  
Proceedings of XVIII SIBGRAPI. IEEE Press, Natal, Brazil, October 2005 (to appear).


Two-Level Interaction Approach for Transfer Function Specification 
 J. Prauchner, C. Freitas, J. Comba
Proceedings of XVIII SIBGRAPI. IEEE Press, Natal, Brazil, October 2005 (to appear).

Broad-Phase Colision Detection Using Semi-Adjusting BSP-Trees
R. Luque, J. Comba, C. Freitas.
Proceedings of ACM Siggraph Interactive 3D Graphics and Games 2005. Pages 179-186.

Real-Time Relief Mapping on Arbitrary Polygonal Surfaces
F. Policarpo, M. Oliveira Neto, J. Comba
Proceedings of ACM Siggraph Interactive 3D Graphics and Games 2005. Pages 155-162.

Multiple-Depth Shadow Maps
C. Pagot, J. Comba, M. Oliveira Neto
Proceedings of XVII SIBGRAPI - II SIACG 2004. Pages 308-315. IEEE Press ISBN 0-7695-2227-0, Curitiba, Brazil, October 2004

Navier-Stokes on Programmable Graphics Hardware Using SMAC
C. Scheidegger, J. Comba, R. Cunha
Proceedings of XVII SIBGRAPI - II SIACG 2004. Pages 300-307. IEEE Press ISBN 0-7695-2227-0, Curitiba, Brazil, October 2004

Real-time interactive visualization and manipulation of the volumetric data using GPU-based methods
C. Dietrich, L. Nedel, S. Olabarriaga, J. Comba, D. Zanchet, A. Silva, E. Montero
Proceedings of SPIE Medical Imaging 2004. Pages 181-192. ISBN 0-8194-5280-7. San Diego, USA, February 2004.

Real-Time Volume Rendering of Temporal Data Using A Fragment-Shader Compression Approach
A. Binotto, J. Comba, C. Freitas
Proceedings of IEEE Parallel and Large Data Visualization and Graphics 2003. Pages 69-75. IEEE Press ISBN 0-7803-8122-X. Seattle, USA, October 2003.

Smart Visible Sets for Networked Virtual Environments
F. Moreira, J. Comba, C. Freitas.
Proceedings of XV SIBGRAPI 2002. Pages 373-380. IEEE Press ISBN 0-7695-1846-X, Fortaleza, Brazil, October 2002.

A Segment-Tree Based Kinetic BSP.
M. de Berg, J. Comba, L. Guibas.
Proceedings of XVII ACM Symposium on Computational Geometry (SOCG 2001). Pages 134-140. ACM Press ISBN 1-58113-357-X, Medford, USA, June 2001.

Kinetic Data Structures: Animating Proofs Through Time
J. Basch, J. Comba, L. Guibas, J. Hershberger, C. Silverstein,  L. Zhang.
Proceedings of XV ACM Symposium On Computational Geometry (SOCG 1999). ACM Press ISBN 1-58113-068-6. Pages 427-428, Miami, USA,  June 1999.

Affine Arithmetic
M. Andrade, J. Comba, J. Stolfi.
Proceedings of Interval 94. Pages 36-40. St. Petersburg, Russia, March 1994.

Affine Arithmetic and its applications to Computer Graphics
J. Comba, J. Stolfi.
Proceedings of VI SIBGRAPI. Pages 9-18. Recife, Brazil, October 1993.

An Adaptive Triangulation Refinement Scheme and Construction
R. Persiano, J. Comba, V. Barbalho.
Proceedings of VI SIBGRAPI. Pages 259-266. Recife, Brazil, October 1993.

Ray Tracing of CSG Solids using a Multi-Resolution Bresenham
J. Comba, R. Persiano.
Proceedings of Compugraphics 91, Volume 2, Pages 210-219. Sesimbra,  Portugal.  September 1991.

BOOKS

SIBGRAPI/SIACG 2004 Conference Proceedings.
A. Albuquerque, J. Comba, I. Navazo, A. Souza (Editors).
Proceedings of SIBGRAPI/SIACG 2004. IEEE Press ISBN 0-7695-2227-0, October 2004

BOOK CHAPTERS

On the Convexification of Unstructured Grids From A Scientific Visualization Perspective.
J. Comba, J. Mitchell, and C. Silva
In Scientific Visualization: Extracting Information and Knowledge from Scientific Datasets.
Editors: G.-P. Bonneau, T. Ertl, G. M. Nielson, Springer-Verlag.  2005, ISBN: 3-540-26066-8

Conversion of Binary Space Partitioning Trees to Boundary Representation
J. Comba, B. Naylor
In Geometric Modeling: Theory and Practice . Pages 286-301. W. Strasser, R. Klein, R. Rau (Eds). Springer Verlag 1996, ISBN 3-540-61883-X.

PhD THESIS

Kinetic Vertical Decomposition Trees
J. Comba.
Ph.D. Thesis, Computer Science Department, Stanford University, 141 pages. January, 2000.

TECHNICAL REPORTS

GPU-based Tiled Ray Casting using Depth Peeling
F. Bernardon, C. Pagot, J. Comba, C. Silva
SCI Institute Technical Report UUSCI-2004-006. 17 pages. University Of Utah, USA, July 2004.

On the Convexification of Unstructured Grids From A Scientific Visualization Perspective
J. Comba, J. Mitchell, and C. Silva
SCI Institute Technical Report UUSCI-2004-004. 16 pages. University Of Utah, USA, July 2004.

Hardware-Assisted Visibility Sorting for Unstructured Volume Rendering
S. Callahan, M. Ikits, J. Comba, and C. Silva
SCI Institute Technical Report UUSCI-2004-003. 9 pages. University Of Utah, USA, June 2004.

 

PATENTS

System and Method for Fast Polyhedral Cell Sorting.
J. Klosowski, C. Silva, G. Taubin, P. Willians, J. Mitchell, J. Comba.
United States Patent No IS 6,356,262 B1, March, 12, 2002.

 

CONFERENCE PAPERS (In Portuguese)

Explorando a Multidimensionalidade da Kd-Tree para Suporte a Temporalidade em Dados Espaciais Vetoriais do Tipo Ponto (in portuguese)
L. Heredia, C. Iochpe, J. Comba
Proceedings of GeoInfo 2003

"Ray Tracing" Otimizado de Solidos CSG usando Octrees
J. Comba, R. Persiano.
Proceedings of the III SIBGRAPI, Pages 21-30, Gramado, Brazil, May 1990.

Algoritmos para Exibicao de Imagens Coloridas (in portuguese)
J. Comba, C. Esperanca, R. Persiano.
Proceedings of the III SIBGRAPI, Pages 184-191. Gramado, Brazil, May 1990.

Imprimindo Imagens Coloridas em Dispositivos Monocromaticos
C. Esperanca, J. Comba.
Proceedings of the III SIBGRAPI, Pages 177-183. Gramado, Brazil, May 1990.

Transparencia de Solidos em Octrees
V. Hottum, M. Silva, J. Comba.
Proceedings of the XII CMAC. Aguas de Lindoia, Brazil. October 1990.

Um Sistema para Manipulacao e Visualizacao de Octrees
J. Comba, C. Santos, R. Persiano.
Proceedings of IX Symposium of the SBC. Pages 1-13. Uberlandia, Brazil. July 1989.

Ferramenta Graficas do Sistema AMPLO
C. Freitas, J. Comba.
Proceedings of the I SIBGRAPI, Pages 78-87. Itaipava, Brazil. April 1988.

Familia de Editores do Sistema AMPLO
S. D. Olabarriaga, M. Pinho, J. Comba.
Proceedings of the I SIBGRAPI, Pages 222-224. Itaipava, Brazil. April 1988.

MSc and BSc THESIS (In Portuguese)

Accelerated Ray-Tracing of CSG Solids (in portuguese)
J. Comba.
M.Sc. Dissertation, Programa de Engenharia de Sistemas e Computacao, COPPE, UFRJ, 127 pages. April 1991.

Editor grafico para a Linguagem NILO (in portuguese)
J. Comba
BSc Final Project. Universidade Federal do Rio Grande do Sul. 63 Pages.

 

TECHNICAL REPORTS (In Portuguese)

 

Pacote Grafico para o Sistema AMPLO
S. Olabarriaga, J. Comba, M. Pinho
Technical Report PPGC UFRGS 1988

Interface de Saida com Dispositivos Graficos (in portuguese)
S. Olabarriaga, J. Comba, M. Pinho
Technical Report PPGC UFRGS

Extensao da Interface de Saida com Dispositivos Graficos (in portuguese)
S. D. Olabarriaga, J. Comba.
Technical Report PPGC UFRGS


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