Legolizer: A Real-Time System for Modeling and Rendering LEGO Representations of Boundary Models 
Luís F. M. S. Silva, Vitor F. Pamplona, João L.D. Comba
Proceedings of XXII SIBGRAPI 2009

Efficient and High Quality Contouring of Isosurfaces on Uniform Grids
Leonardo Schmitz, C.A.Dietrich, J.L.D. Comba
Proceedings of XXII SIBGRAPI 2009

Salient Clustering for View-dependent Multiresolution Rendering
R. Barni, , A. Varshney, J.L.D. Comba
Proceedings of XXII SIBGRAPI 2009

Eurographics Parallel Graphics and Visualization 2009 (EGPGV 09)
Kurt Debattista, Daniel Weiskopf, João Comba (Editors).
Proceedings of EGPGV 09 2009. Eurographics. ISBN 978-3-905674-15-6, March 2009.

Topological Extraction and Tracking of Defects in Crystal Structures 
S. Grottel, C. Dietrich, J.L.D.Comba, T. Ertl
In Topological Methods in Data Analysis and Visualization 2009 (TopoInVis 2009), Snowbird, USA

Marching cubes without skinny triangles
C.A.Dietrich, C. Scheidegger, J.L.D. Comba, L.P.Nedel, C. T. Silva
Computing In Science & Engineering, March/April 2009, Vol. 11, No. 2. Pages 82-87. 

Edge Transformations for Improving Mesh Quality of Marching Cubes
C.A.Dietrich, C. Scheidegger, J.L.D. Comba, L.P.Nedel, C. T. Silva
In IEEE Transactions On Visualization and Computer Graphics. Volume 15. No. 1, Pages 150-159, January/February 2009. 

Adaptive Re-Meshing for Displacement Mapping
R.P. Torchelsen, C. Dietrch, J. L. D. Comba; R. Bastos.
In Shader X7: Advanced Rendering. Editor Wolfgang Engel. Charles River Media, 2009. 

Fast Tessellation of Quadrilateral Patches on GPU for Dynamic Level of Details
C.A.Dietrich, J.L.D. Comba, L.P.Nedel
In Shader X7: Advanced Rendering. Editor Wolfgang Engel. Charles River Media, 2009.

Edge Groups: An Approach to Understanding The Quality of Marching Methods.
C.A.Dietrich, C. Scheidegger, J.L.D. Comba, L.P.Nedel, C. T. Silva
In IEEE Transactions On Visualization and Computer Graphics (IEEE Visualization 2008 issue). Volume 14. No. 6, Pages 1651-1658, November/December 2008. 

A Fast GPU Particle System Approach for Isocontouring on hp-Adaptive Finite Element Meshes
C.A.Pagot, J. Vollrath, J.L.D. Comba, Daniel Weiskopf
Poster in IEEE Visualization 2008. 

Transfer Function Specification for Rendering Disparate Volumes
Bernardon, F.F.; Ha, Kinh K,, Callahan, S. P, Comba, J.L.D.; & Silva, C.T.
Computing In Science & Engineering, Vol.10, No. 6. November/December 2008. Pages 82-89. 

Comparing Techniques for Tetrahedral Mesh Generation. 
M. Lizieer, J. F. Shepherd, L. G. Nonato,  J.L.D. Comba, C. T. Silva
In Inaugural International Conference of the Engineering Mechanics Institute, 2008, Minneappolis. [bibtex]

Practical Geometry Clipmaps for Rendering Terrains in Computer Games
R.P. Torchelsen, Comba, J.L.D.; R. Bastos.
In Shader X6: Advanced Rendering. Editor Wolfgang Engel. Charles River Media, 2008. 

A Sketch-based Interface to Real-time Strategy Games Based on a Cellular Automaton
C.A.Dietrich, J.L.D. Comba, L.P.Nedel
In Game Programming Gems 7. Charles River Media, 2008. ISBN 9781584505273.

An Adaptive Framework for Visualizing Unstructured Grids with Time-Varying Scalar Fields
Bernardon, F.F.; Callahan, S. P, Comba, J.L.D.; & Silva, C.T.
Parallel Computing, Volume 33, Issue 6, 391-405, June 2007. ISBN 0167-8191.

Storing and Accessing Topology on the GPU: A Case Study on Mass-Spring Systems
Dietrich, C. A., Comba, J.L.D & Nedel, L. P. 
In ShaderX 5 - Advanced Rendering Techniques, 2007. Edited by Wolfgang Engel. Pages 565-578. Charles River Media ISBN 1-58450-499-4.

A Rule-Based Optimizer for Spatial Join Algorithms
Fornari, M. Iochpe, C & J. Comba 
Advances in Geoinformatics. Pages 87-105. Springer-Verlag, 2007. ISBN 978-3-540-734.

Multi-Fragment Effects on the GPU using the k-Buffer
L. Bavoil, S.P. Callahan, A. Lefohn, J.L.D. Comba, C.T. Silva
ACM SIGGRAPH Symposium on Interactive 3D Graphics and Games, 2007 (to appear) 

A Rule-Based Optimizer for Spatial Join Algorithms
Fornari, M. Iochpe, C & J. Comba 
Geo INFO 2006 - VIII Brazilian Symposium on Geonfinformatics

GPU-based Tiled Ray Casting using Depth Peeling
Bernardon, F.F.; Comba, J.L.D.; Pagot, C.A. & Silva, C.T.
Journal of Graphics Tools, 2006, 11.3, 23-29

Interactive Volume Rendering of Unstructured Grids with Time-Varying Scalar Fields
Bernardon, F.; Callahan, S.; Comba, J. & Silva, C. 
Eurographics Symposium on Parallel Graphics and Visualization, 2006, 51-58

Erasing, Digging and Clipping in Volumetric Datasets with One or Two Hands
Huff, R.; Dietrich, C.A.; Nedel, L.P.; Freitas, C.M.D.S. & Olabarriaga, S.D.
VRCIA 2006 (ACM International Conference on Virtual Reality Continuum and Its Applications), 2006, 271-278

On the Convexification of Unstructured Grids From A Scientific Visualization Perspective.
Comba, J.L.D.; Mitchell, J.S.B. & Silva, C.T.
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

Practical CFD Simulations on Programmable Graphics Hardware Using SMAC
Scheidegger, C.E.; Comba, J.L.D. & da Cunha, R.D.
Computer Graphics Forum, 2005, 24-4, 715-728

Real-Time Relief Mapping on Arbitrary Polygonal Surfaces
Policarpo, F.; Neto, M.M.O. & Comba, J.L.D.
ACM Transaction on Graphics, 2005, 24-3, 935-935

Hardware-Assisted Visibility Sorting for Unstructured Volume Rendering
Callahan, S.; Ikits, M.; Comba, J. & Silva, C.
IEEE Transactions on Visualization and Computer Graphics, 2005, 11, 285-295

A Survey of GPU-Based Volume Rendering of Unstructured Grids.
Silva, C.T.; Comba, J.L.D.; Bernardon, F.F. & Callahan, S.P.
Revista de Informática Teórica e Aplicada, 2005, 12-2, 9-29

Interactive Rendering of Large Unstructured Grids Using Dynamic Level-of-Detail
Callahan, S.; Comba, J.; Shirley, P. & Silva, C.
IEEE Visualization '05, 2005, 199-206

Boolean Operations on Surfel-Bounded Objects using Constrained BSP-Trees
Farias, M.A.C.; Scheidegger, C.; Comba, J.L.D. & Velho, L.
Proceedings of XVIII SIBGRAPI '05, 2005, 325-332

Two-Level Interaction Approach for Transfer Function Specification
Prauchner, J.; Freitas, C. & Comba, J.
Proceedings of XVIII SIBGRAPI '05, 2005, 265-272

Broad-Phase Colision Detection Using Semi-Adjusting BSP-Trees
Luque, R.; Comba, J.L.D. & Freitas, C.M.D.
Proceedings of ACM Siggraph Interactive 3D Graphics and Games - I3D 2005, 2005, 179-186

Real-Time Relief Mapping on Arbitrary Polygonal Surfaces
Policarpo, F.; Neto, M.O. & Comba, J.L.D.
Proceedings of ACM Siggraph Interactive 3D Graphics and Games - I3D 2005, 2005, 155-162

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

Multiple-Depth Shadow Maps
Pagot, C.A.; Comba, J.L.D. & Neto, M.M.O.
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
Scheidegger, C.E.; Comba, J.L.D. & da Cunha, R.D.
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
Dietrich, C.A.; Nedel, L.P.; Olabarriaga, S.D.; Comba, J.L.D.; Zanchet, D.; da Silva, A.M.M. & Montero, E.
Proceedings of SPIE Medical Imaging 2004. Pages 181-192. ISBN 0-8194-5280-7. San Diego, USA, February 2004.

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.

Computation on GPUs: from a programmable pipeline to an efficient stream processor
Comba, J.L.D.; Dietrich, C.A.; Pagot, C.A. & Scheidegger, C.E.
Revista de Informática Teórica e Aplicada, 2003, 10-1, 41-70

Real-Time Volume Rendering of Temporal Data Using A Fragment-Shader Compression Approach
Binotto, A.P.D.; Comba, J.L.D. & Freitas, C.M.D.
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.

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.

Real-Time Volume Rendering of Dynamic Data Using Graphics Hardware
Binotto, A.P.D.; Comba, J.L.D. & Freitas, C.M.D.S.
Scientia, 2002, 13-2, 31-42

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

Special Effects with Current Graphics Hardware
Comba, J.L.D. & Bastos, R.
Revista de Informática Teórica e Aplicada, 2001, 8-2, 69-88

A Segment-Tree Based Kinetic BSP
de Berg, M.; Comba, J.L.D. & Guibas, L.J.
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 Vertical Decomposition Trees
Joao Luiz Dihl Comba
Ph.D. Thesis, Computer Science Department, Stanford University, 141 pages. January, 2000.

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

Fast Polyhedral Cell Sorting for Interactive Rendering of Unstructured Grids   
Comba, J.L.D.; Klosowski, J.T.; Max, N.; Mitchell, J.S.B.; Silva, C.T. & Williams, P.L.
Computer Graphics Forum, 1999, 18-3, 369-376

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

Affine Arithmetic
Andrade, M.V.A.; Comba, J.L.D. & Stolfi, J.
Proceedings of Interval 94. Pages 36-40. St. Petersburg, Russia, March 1994.

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

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

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

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

"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.

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.

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 1988

Extensao da Interface de Saida com Dispositivos Graficos (in portuguese)
S. D. Olabarriaga, J. Comba.
Technical Report PPGC UFRGS 1988

Editor grafico para a Linguagem NILO (in portuguese)
Joao Luiz Dihl Comba
BSc Final Project. Universidade Federal do Rio Grande do Sul. 1987. 63 Pages.