The Community for Technology Leaders
2006 19th Brazilian Symposium on Computer Graphics and Image Processing (2006)
Manaus, AM, Brazil
Oct. 8, 2006 to Oct. 11, 2006
ISSN: 1530-1834
ISBN: 0-7695-2686-1
TABLE OF CONTENTS

Improving 2D mesh image segmentation with Markovian Random Fields (Abstract)

Alex J. Cuadros-vargas , Instituto de Ciencias Matematicas e de Computacao - USP, Brazil
Leandro C. Gerhardinger , Instituto de Ciencias Matematicas e de Computacao - USP, Brazil
Mario De Castro , Instituto de Ciencias Matematicas e de Computacao - USP, Brazil
Joao Batista Neto , Instituto de Ciencias Matematicas e de Computacao - USP, Brazil
Luis Gustavo Nonato , Instituto de Ciencias Matematicas e de Computacao - USP, Brazil
pp. 61-70

A Computer-Assisted Colorization Algorithm based on Topological Difference (Abstract)

Hedlena Bezerra , PUC-Rio - Pontificia Universidade Catolica do Rio de Janeiro, Brazil
Bruno Feijo , PUC-Rio - Pontificia Universidade Catolica do Rio de Janeiro, Brazil
Luiz Velho , IMPA - Instituto de Matematica Pura e Aplicada, Brazil
pp. 71-77

Particle-based non-Newtonian fluid animation for melting objects (Abstract)

Afonso Paiva , PUC - Rion - Department of Mathematics - Matmidia Laboratory - Rio de Janeiro, Brazil
Fabiano Petronetto , PUC - Rion - Department of Mathematics - Matmidia Laboratory - Rio de Janeiro, Brazil
Thomas Lewiner , PUC - Rion - Department of Mathematics - Matmidia Laboratory - Rio de Janeiro, Brazil
Geovan Tavares , PUC - Rion - Department of Mathematics - Matmidia Laboratory - Rio de Janeiro, Brazil
pp. 78-85
Introduction

Committees (PDF)

pp. x-xiii

Transformation Semantics: An Efficient Approach for Collision Detection (Abstract)

Jose Gilvan Rodrigues Maia , Universidade Federal do Ceara (UFC), Brazil
Creto Augusto Vidal , Universidade Federal do Ceara (UFC), Brazil
Joaquim Bento Cavalcante-neto , Universidade Federal do Ceara (UFC), Brazil
pp. 94-104
3D Photography

Dealing with Multi-Scale Depth Changes and Motion in Depth Edge Detection (Abstract)

Rogerio Feris , University of California, Santa Barbara
Matthew Turk , University of California, Santa Barbara
Ramesh Raskar , Mitsubishi Electric Research Labs
pp. 3-10

Extracting Discriminative Information from Medical Images: A Multivariate Linear Approach (Abstract)

Carlos E. Thomaz , Centro Universitario da FEI, Sao Paulo, Brazil
Nelson A.O. Aguiar , Centro Universitario da FEI, Sao Paulo, Brazil
Sergio H.A. Oliveira , Centro Universitario da FEI, Sao Paulo, Brazil
Fabio L.S. Duran , Faculty of Medicine, University of Sao Paulo, Brazil
Geraldo F. Busatto , Faculty of Medicine, University of Sao Paulo, Brazil
Duncan F. Gillies , Imperial College, London, UK
Daniel Rueckert , Imperial College, London, UK
pp. 113-120

Non-Extensive Entropy for CAD Systems of Breast Cancer Images (Abstract)

G.A. Giraldi , National Lab. for Sci. Comput., Rio de Janeiro
P.S. Rodrigues , National Lab. for Sci. Comput., Rio de Janeiro
G.A. Giraldi , National Lab. for Sci. Comput., Rio de Janeiro
P.S. Rodrigues , National Lab. for Sci. Comput., Rio de Janeiro
pp. 121-128
3D Photography

Curvature-driven Modeling and Rendering of Point-Based Surfaces (Abstract)

Joao Paulo Gois , University of Sao Paulo
Eduardo Tejada , University of Stuttgart
Tiago Etiene , University of Sao Paulo
Luis Gustavo Nonato , University of Sao Paulo
Antonio Castelo , University of Sao Paulo
Thomas Ertl , University of Sao Paulo
pp. 27-36
Segmentation

Tree-Pruning: A New Algorithm and Its Comparative Analysis with the Watershed Transform for Automatic Image Segmentation (Abstract)

Paulo A.V. Miranda , LIV - Institute of Computing - UNICAMP, Brazil
Felipe P.G. Bergo , LIV - Institute of Computing - UNICAMP, Brazil
Leonardo M. Rocha , DECOM - FEEC - UNICAMP, Brazil
Alexandre X. Falcao , LIV - Institute of Computing - UNICAMP, Brazil
pp. 37-44

Actively Illuminated Objects using Graph-Cuts (Abstract)

Asla Sa , Visgraf/IMPA, Rio de Janeiro, Brazil
Marcelo Bernardes Vieira , DCC - ICE - UFJF Cidade Universitaria, Brazil
Anselmo Antunes Montenegro , IME UERJ, Brazil
Paulo Cezar Carvalho , Visgraf/IMPA, Brazil
Luiz Velho , Visgraf/IMPA, Brazil
pp. 45-52

Plausible Image Based Soft Shadows Using Occlusion Textures (Abstract)

Elmar Eisemann , ARTIS-GRAVIR/IMAG-INRIA
Xavier Decoret , ARTIS-GRAVIR/IMAG-INRIA
pp. 155-162
Segmentation

Improving 2D mesh image segmentation with Markovian Random Fields (Abstract)

Alex J. Cuadros-Vargas , Instituto de Ciencias Matem?ticas e de Computacao - USP, Brazil
Leandro C. Gerhardinger , Instituto de Ciencias Matem?ticas e de Computacao - USP, Brazil
Mario de Castro , Instituto de Ciencias Matem?ticas e de Computacao - USP, Brazil
Joao Batista Neto , Instituto de Ciencias Matem?ticas e de Computacao - USP, Brazil
Luis Gustavo Nonato , Instituto de Ciencias Matem?ticas e de Computacao - USP, Brazil
pp. 61-70

Directing the Attention of aWearable Camera by Pointing Gestures (Abstract)

Teofilo E. De Campos , University of Oxford, UK
Walterio W. Mayol Cuevas , University of Bristol,, UK
David W. Murray , University of Oxford, UK
pp. 179-186
Animation and Collision Detection

Performance Evaluation of a Hybrid Algorithm for Collision Detection in Crowded Interactive Environments (Abstract)

Rafael de Sousa Rocha , Universidade de Fortaleza (UNIFOR), Fortaleza, Brazil
Maria Andr?ia Formico Rodrigues , Universidade de Fortaleza (UNIFOR), Fortaleza, Brazil
Leandro da Silva Taddeo , Universidade de Fortaleza (UNIFOR), Fortaleza, Brazil
pp. 86-93

Transformation Semantics: An Efficient Approach for Collision Detection (Abstract)

Jos? Gilvan Rodrigues Maia , Universidade Federal do Cear? (UFC), Brazil
Creto Augusto Vidal , Universidade Federal do Cear? (UFC), Brazil
Joaquim Bento Cavalcante-Neto , Universidade Federal do Cear? (UFC), Brazil
pp. 94-104
Medical Images

Increasing statistical power in medical image analysis (Abstract)

Alexei M. C. Machado , Pontifical Catholic University of Minas Gerais, Brazil
pp. 105-112

Extracting Discriminative Information from Medical Images: A Multivariate Linear Approach (Abstract)

Carlos E. Thomaz , Centro Universitario da FEI, S?o Paulo, Brazil
Nelson A.O. Aguiar , Centro Universitario da FEI, S?o Paulo, Brazil
Sergio H.A. Oliveira , Centro Universitario da FEI, S?o Paulo, Brazil
Fabio L.S. Duran , Faculty of Medicine, University of S?o Paulo, Brazil
Geraldo F. Busatto , Faculty of Medicine, University of S?o Paulo, Brazil
Duncan F. Gillies , Imperial College, London, UK
Daniel Rueckert , Imperial College, London, UK
pp. 113-120

Non-Extensive Entropy for CAD Systems of Breast Cancer Images (Abstract)

Paulo S. Rodrigues , National Laboratory for Scientific Computing Petropolis, Rio de Janeiro, Brazil
Ruey-Feng Chang , National Chung Cheng University, China
Jasjit S. Suri , Biomedical Technologies Inc., CO, USA
pp. 121-128

Interpolation of Computerized Tomography Slices using 3D Digital Inpainting (Abstract)

Sandrerley R. Pires , Alves Faria Faculty, Goiania, GO, Brazil
Edna L. Flores , Federal University of Uberlandia, Uberlandia, MG, Brazil
Celia A. Z. Barcelos , Federal University of Uberlandia, Uberlandia, MG, Brazil
Marcos A. Batista , Federal University of Goias, Catalao, GO, Brazil
pp. 129-138

Expression Transfer between Photographs through Multilinear AAM's (Abstract)

Ives Macedo , IMPA - Instituto Nacional de Matematica Pura e Aplicada, Brazil
Emilio Vital Brazil , IMPA - Instituto Nacional de Matematica Pura e Aplicada, Brazil
Luiz Velho , IMPA - Instituto Nacional de Matematica Pura e Aplicada, Brazil
pp. 239-246

A Statistical Discriminant Model for Face Interpretation and Reconstruction (Abstract)

Edson C. Kitani , Centro Universitario da FEI, Sao Paulo, Brazil
Carlos E. Thomaz , Centro Universitario da FEI, Sao Paulo, Brazil
Duncan F. Gillies , Imperial College, London, UK
pp. 247-254
Interactive Computer Graphics

Plausible Image Based Soft Shadows Using Occlusion Textures (Abstract)

Elmar Eisemann , ARTIS-GRAVIR/IMAG-INRIA
Xavier Decoret , ARTIS-GRAVIR/IMAG-INRIA
pp. 155-162

Fast and Easy Computation of Approximate Smallest Enclosing Balls (Abstract)

Thomas Martinetz , University of Lubeck, Germany
Amir Madany Mamlouk , University of Lubeck, Germany
Cicero Mota , Universidade Federal do Amazonas, Brazil
pp. 163-170

Exploratory visualization based on multidimensional transfer functions and star coordinates (Abstract)

Alex Laier Bordignon , PUC-Rio, Rio de Janeiro, Brazil
Rener Castro , PUC-Rio, Rio de Janeiro, Brazil
Helio Lopes , PUC-Rio, Rio de Janeiro, Brazil
Thomas Lewiner , PUC-Rio, Rio de Janeiro, Brazil
Geovan Tavares , PUC-Rio, Rio de Janeiro, Brazil
pp. 273-280
Tracking

Directing the Attention of aWearable Camera by Pointing Gestures (Abstract)

Teofilo E. de Campos , University of Oxford, UK
Walterio W. Mayol Cuevas , University of Bristol,, UK
David W. Murray , University of Oxford, UK
pp. 179-186

Music Icons: Procedural Glyphs for Audio Files (Abstract)

Philipp Kolhoff , University of Applied Sciences, Bremen, Germany
Jacqueline Preub , University of Applied Sciences, Bremen, Germany
Jorn Loviscach , University of Applied Sciences, Bremen, Germany
pp. 289-296
Tracking

Subspace Hierarchical Particle Filter (Abstract)

Bruno Cedraz Brandao , Universidade Estadual de Campinas - Instituto de Computacao, Brazil
Jacques Wainer , Universidade Estadual de Campinas - Instituto de Computacao, Brazil
Siome Klein Goldenstein , Universidade Estadual de Campinas - Instituto de Computacao, Brazil
pp. 194-204
Meshes and Compression

Robust adaptive meshes for implicit surfaces (Abstract)

Afonso Paiva , PUC-Rio, Brazil
Helio Lopes , PUC-Rio, Brazil
Thomas Lewiner , PUC-Rio, Brazil
Luiz Henrique de Figueiredo , IMPA, Rio de Janeiro, Brazil
pp. 205-212

Motion Segmentation using Mathematical Morphology (Abstract)

Arnaldo Camara Lara , University of Sao Paulo
Roberto Jr. Hirata , University of Sao Paulo
pp. 315-322
Meshes and Compression

Single Triangle Strip and Loop on Manifolds with Boundaries (Abstract)

Pablo Diaz-Gutierrez , University of California, Irvine.
David Eppstein , University of California, Irvine.
M. Gopi , University of California, Irvine.
pp. 221-228

Point set compression through BSP quantization (Abstract)

Alex Bordignon , PUC-Rio, Rio de Janeiro,Brazil
Thomas Lewiner , PUC-Rio, Rio de Janeiro,Brazil
Helio Lopes , PUC-Rio, Rio de Janeiro,Brazil
Geovan Tavares , PUC-Rio, Rio de Janeiro,Brazil
Rener Castro , PUC-Rio, Rio de Janeiro,Brazil
pp. 229-238
Statistical Image Analysis

Expression Transfer between Photographs through Multilinear AAM's (Abstract)

Ives Macedo , IMPA - Instituto Nacional de Matematica Pura e Aplicada, Brazil
Emilio Vital Brazil , IMPA - Instituto Nacional de Matematica Pura e Aplicada, Brazil
Luiz Velho , IMPA - Instituto Nacional de Matematica Pura e Aplicada, Brazil
pp. 239-246

A Statistical Discriminant Model for Face Interpretation and Reconstruction (Abstract)

Edson C. Kitani , Centro Universit?rio da FEI, Sao Paulo, Brazil
Carlos E. Thomaz , Centro Universit?rio da FEI, Sao Paulo, Brazil
Duncan F. Gillies , Imperial College, London, UK
pp. 247-254

Accuracy of Statistical Classification Strategies in Remote Sensing Imagery (Abstract)

Alejandro C. Frery , Universidade Federal de Alagoas, Brazil
Susana Ferrero , UNRC Ruta, Argentina
Oscar H. Bustos , FaMAF-UNC, Argentina
pp. 255-262

Improved FingerCode Matching Function (Abstract)

Gustavo de Sa , University of Campinas (UNICAMP), Brazil
Roberto Lotufo , University of Campinas (UNICAMP), Brazil
pp. 263-272
Visualization

Exploratory visualization based on multidimensional transfer functions and star coordinates (Abstract)

Alex Laier Bordignon , PUC-Rio, Rio de Janeiro, Brazil
Rener Castro , PUC-Rio, Rio de Janeiro, Brazil
Helio Lopes , PUC-Rio, Rio de Janeiro, Brazil
Thomas Lewiner , PUC-Rio, Rio de Janeiro, Brazil
Geovan Tavares , PUC-Rio, Rio de Janeiro, Brazil
pp. 273-280

Two-Level Interaction Transfer Function Design Combining Boundary Emphasis, Manual Specification and Evolutive Generation (Abstract)

Francisco de Moura Pinto , Instituto de Informatica, Universidade Federal do Rio Grande do Sul
Carla M.D.S. Freitas , Instituto de Informatica, Universidade Federal do Rio Grande do Sul
pp. 281-288

Music Icons: Procedural Glyphs for Audio Files (Abstract)

Philipp Kolhoff , University of Applied Sciences, Bremen, Germany
Jacqueline Preub , University of Applied Sciences, Bremen, Germany
Jorn Loviscach , University of Applied Sciences, Bremen, Germany
pp. 289-296

Vector field reconstruction from sparse samples with applications (Abstract)

Marcos Lage , PUC.Rio, Rio de Janeiro, Brazil
Fabiano Petronetto , PUC.Rio, Rio de Janeiro, Brazil
Afonso Paiva , PUC.Rio, Rio de Janeiro, Brazil
Helio Lopes , PUC.Rio, Rio de Janeiro, Brazil
Thomas Lewiner , PUC.Rio, Rio de Janeiro, Brazil
Geovan Tavares , PUC.Rio, Rio de Janeiro, Brazil
pp. 297-306
Mathematical Morphology

Euclidean homotopic skeleton based on critical kernels (Abstract)

M. Couprie , Institut Gaspard-Monge, Laboratoire A2SI, Groupe ESIEE
A. V. Saude , Institut Gaspard-Monge, Laboratoire A2SI, Groupe ESIEE
G. Bertrand , State University of Campinas, School of Electrical and Computer Engineering
pp. 307-314

Motion Segmentation using Mathematical Morphology (Abstract)

Arnaldo Camara Lara , University of Sao Paulo
Roberto Jr. Hirata , University of Sao Paulo
pp. 315-322

A scaled morphological toggle operator for image transformations (Abstract)

Neucimar Jeronimo Leite , Unicamp - Universidade Estadual de Campinas, Brazil
Leyza Baldo Dorini , Unicamp - Universidade Estadual de Campinas, Brazil
pp. 323-330

Determining the branchings of 3D structures from respective 2D projections (Abstract)

Jorge J. G. Leandro , Institute of Mathematics and Statistics - USP, Brazil
Roberto M. Jr. Cesar , Institute of Mathematics and Statistics - USP, Brazil
Luciano da Fontoura Costa , Instituto de Fisica de Sao Carlos - USP, Brazil
pp. 331-340
Video Analysis

Estimation of Multiple Orientations and Multiple Motions in Multi-Dimensional Signals (Abstract)

Ingo Stuke , University of Luebeck, Germany
Erhardt Barth , University of Luebeck, Germany
Cicero Mota , Universidade Federal do Amazonas, Brazil
pp. 341-348

Detection of Unusual Motion Using Computer Vision (Abstract)

Claudio R. Jung , PIPCA - Graduate School on Applied Computing - Universidade do Vale do Rio dos Sinos
Julio C. S. Jr. Jacques , PIPCA - Graduate School on Applied Computing - Universidade do Vale do Rio dos Sinos
John Soldera , PIPCA - Graduate School on Applied Computing - Universidade do Vale do Rio dos Sinos
Soraia R. Musse , PIPCA - Graduate School on Applied Computing - Universidade do Vale do Rio dos Sinos
pp. 349-356

Hand Image Segmentation in Video Sequence by GMM: a comparative analysis (Abstract)

Hebert Luchetti Ribeiro , University of Sao Paulo -USP
Adilson Gonzaga , University of Sao Paulo -USP
pp. 357-364

Video Segmentation by Supervised Learning (Abstract)

G. Camara Chavez , Equipe Traitment des Images et du Signal-ENSEA
M. Cord , Equipe Traitment des Images et du Signal-ENSEA
F. Precioso , Equipe Traitment des Images et du Signal-ENSEA
S. Philipp-Foliguet , Equipe Traitment des Images et du Signal-ENSEA
Arnaldo de A. Araujo , Federal University of Minas Gerais
pp. 365-372
Author Index

Author Index (PDF)

pp. 373
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