The Community for Technology Leaders
2012 25th SIBGRAPI Conference on Graphics, Patterns and Images (2004)
Curitiba, PR, Brazil
Oct. 17, 2004 to Oct. 20, 2004
ISBN: 0-7695-2227-0
TABLE OF CONTENTS

Preface (PDF)

pp. ix

Reviewers (PDF)

pp. xii-
1: Medical Image Processing

An Adaptive Approach to Mammographic Image Denoising and Enhancement (Abstract)

Cl?udio Rosito Jung , UNISINOS - Universidade do Vale do Rio dos Sinos, Brasil
Jacob Scharcanski , UFRGS - Universidade Federal do Rio Grande do Sul, Brasil
pp. 2-9

Segmentation of Clinical Structures from Images of the Human Pelvic Area (Abstract)

Alan N. Freitas , Universidade de Bras?lia, Brasil
Alzenir O. Silva , Universidade de Bras?lia, Brasil
Juliana Fernandes Camapum , Universidade de Bras?lia, Brasil
Fl?via Mendes O. Freitas , Universidade de Bras?lia, Brasil
Hansenclever de F. Bassani , Universidade de Bras?lia, Brasil
pp. 10-16

An Image-Matching Approach to Protein Similarity Analysis (Abstract)

Carlos E. R. Lopes , Universidade Federal de Minas Gerais, Brazil
Fernando Fernandes Jr. , Universidade Federal de Minas Gerais, Brazil
Carlos H. Silveira , Universidade Federal de Minas Gerais, Brazil
Raquel C. de Melo , Universidade Federal de Minas Gerais, Brazil
Marcelo M. Santoro , Universidade Federal de Minas Gerais, Brazil
Arnaldo de A. Ara? , Universidade Federal de Minas Gerais, Brazil
Rodrigo L. Carceroni , Universidade Federal de Minas Gerais, Brazil
Wagner Meira Jr. , Universidade Federal de Minas Gerais, Brazil
pp. 17-24

Image Formation in Vibro-Acoustography with Sector Array Transducers (Abstract)

Mostafa Fatemi , Mayo Clinic College of Medicine, Rochester, MN, USA
Glauber T. Silva , Universidade Federal de Alagoas, Brazil
James F. Greenleaf , Mayo Clinic College of Medicine, Rochester, MN, USA
Eliana Almeida , Universidade Federal de Alagoas, Brazil
Alejandro C. Frery , Universidade Federal de Alagoas, Brazil
Shigao Chen , Mayo Clinic College of Medicine, Rochester, MN, USA
pp. 25-32

O.G.R.E. - Open Gestures Recognition Engine (Abstract)

Pedro Nande , ADETTI/ISCTE, Lisboa, Portugal
Nuno Barata , ADETTI/ISCTE, Lisboa, Portugal
Jos? Miguel Salles Dias , ADETTI/ISCTE, Lisboa, Portugal
Andr? Correia , ADETTI/ISCTE, Lisboa, Portugal
pp. 33-40
2: Image Processing and Analysis

Informed Position Based Watermarking (Abstract)

Koerich Borges , Federal University of Santa Catarina - SC, Brazil
Joceli Mayer , Federal University of Santa Catarina - SC, Brazil
Paulo Vinicius , Federal University of Santa Catarina - SC, Brazil
pp. 42-49

Level Lines Continuation based Digital Inpainting (Abstract)

Adriana M. Martins , UFU - Universidade Federal de Uberl?ndia, MG, Brasil
Celia A. Zorzo Barcelos , UFU - Universidade Federal de Uberl?ndia, MG, Brasil
Antonio Carlos Nogueira , UFU - Universidade Federal de Uberl?ndia, MG, Brasil
Marcos A. Batista , UFU - Universidade Federal de Uberl?ndia, MG, Brasil
pp. 50-57

Image Segmentation by Tree Pruning (Abstract)

Alexandre X. Falc? , State University of Campinas (UNICAMP), Brazil
Felipe P. G. Bergo , State University of Campinas (UNICAMP), Brazil
Paulo A. V. Miranda , State University of Campinas (UNICAMP), Brazil
pp. 65-71

A Robust Linear-Parabolic Model for Lane Following (Abstract)

Christian Roberto Kelber , Universidade do Vale do Rio dos Sinos, RS, Brasil
Cl?udio Rosito Jung , Universidade do Vale do Rio dos Sinos, RS, Brasil
pp. 72-79
3: Pattern Recognition

Handwritten Recognition with Multiple Classifiers for Restricted Lexicon (Abstract)

J. J. de Oliveira Jr. , UGCG - Universidade Federal de Campina Grande, Brazil
J. M. de Carvalho , UGCG - Universidade Federal de Campina Grande, Brazil
M. N. Kapp , PUCPR - Pontificia Universidade Catolica do Parana, Brazil
R. Sabourin , ?TS - Ecole de Technologie Superieure, Canada
C. O. de A. Freitas , PUCPR - Pontificia Universidade Catolica do Parana, Brazil
pp. 82-89

Postal Envelope Address Block Location by Fractal-Based Approach (Abstract)

Luiz Felipe Eiterer , PUCPR-Pontif?cia Universidade Cat?lica do Paran?, Brazil
David Menoti , UFMG Universidad Federal de Mis Gerais, Brazil
Jacques Facon , PUCPR-Pontif?cia Universidade Cat?lica do Paran?, Brazil
pp. 90-97

Segmentation with Active Contours: A Comparative Study of B-Spline and Level Set Techniques (Abstract)

Demian Wassermann , UBA-Universidad de Buenos Aires, Argentina
Juliana Gambini , UBA-Universidad de Buenos Aires, Argentina
Mar?a E. Buemi , UBA-Universidad de Buenos Aires, Argentina
Marta E. Mejail , UBA-Universidad de Buenos Aires, Argentina
pp. 98-105

Skeletonization of Two-Dimensional Shapes via Fast Numerical Calculation of Vector Fields (Abstract)

Luciano da F. Costa , Universidade de S?o Paulo, Brazil
Murillo R. P. Homem , Universidade de S?o Paulo, Brazil
Nelson D. A. Mascarenhas , Universidade Federal de S?o Carlos, Brazil
pp. 106-112

Rectangle Detection based on a Windowed Hough Transform (Abstract)

Rodrigo Schramm , UNISINOS - Universidade do Vale do Rio dos Sinos, Brasil
Cl?udio Rosito Jung , UNISINOS - Universidade do Vale do Rio dos Sinos, Brasil
pp. 113-120
4: Mathematical Morphology

Reconnection of Fingerprint Ridges Based on Morphological Operators and Multiscale Directional Information (Abstract)

Marcelo de Almeida Oliveira , UNICAMP - State University of Campinas, Brazil
Neucimar Jer?nimo Leite , UNICAMP - State University of Campinas, Brazil
pp. 122-129

Color-Based Watershed Segmentation of Low-Altitude Aerial Images (Abstract)

Arnaldo de A. Ara? , Univ. Federal de Minas Gerais, Belo Horizonte, MG
Marcos C. de Andrade , Centro de Desenv. da Tecnologia Nuclear, Belo Horizonte, MG
Rodrigo L. Carceroni , Univ. Federal de Minas Gerais, Belo Horizonte, MG
Adriano B. Huguet , Univ. Federal de Minas Gerais, Belo Horizonte, MG
pp. 138-145

Color Image Gradients for Morphological Segmentation: The Weighted Gradient Improved by Automatic Imposition of Weights (Abstract)

Airton Marco Polid?rio , State University of Maring?, Brazil
Franklin C?sar Flores , State University of Maring?, Brazil
Roberto de Alencar Lotufo , State University of Campinas, Brazil
pp. 146-153
5: Computer Vision

W-Operator Window Design by Maximization of Training Data Information (Abstract)

J. Barrera , USP-Universidade de S?o Paulo, Brasil
D. C. Martins-Jr , USP-Universidade de S?o Paulo, Brasil
R. M. Cesar-Jr. , USP-Universidade de S?o Paulo, Brasil
pp. 162-169

Underwater Stereo (Abstract)

Jos? P. Queiroz-Neto , Centro Federal de Educa??o Tecnol?gica, Manaus, AM
Rodrigo Carceroni , Universidade Federal de Minas Gerais, Belo Horizonte, MG
Wagner Barros , Universidade Federal de Minas Gerais, Belo Horizonte, MG
M?rio Campos , Universidade Federal de Minas Gerais, Belo Horizonte, MG
pp. 170-177

A Video-Based Support System for Nighttime Navigation in Semi-Structured Environments (Abstract)

Rodrigo L. Carceroni , Universidade Federal de Minas Gerais, MG, Brazil
M?rio F. Montenegro Campos , Universidade Federal de Minas Gerais, MG, Brazil
Luiz Cl?udio G. Andrade , Universidade Federal de Minas Gerais, MG, Brazil
pp. 178-185

From Photometric-Motion to Shape from Shading (Abstract)

Jos? R. A. Torre? , Pontif?cia Universidade Cat?lica do Paran?, Brazil
Jo?o L. Fernandes , Universidade Federal Fluminense, Brazil
pp. 186-192

Data-Based Motion Simulation Through a Green's Function Approach (Abstract)

Paulo Cezar Pinto Carvalho , IMPA-Instituto Nacional de Matem?tica Pura e Aplicada, Brasil
Perfilino Eug?nio Ferreira Jr. , IMPA-Instituto Nacional de Matem?tica Pura e Aplicada, Brasil
Jos? R. A. Torre? , Universidade Federal Fluminense, Brasil
pp. 193-199
6: Meshes and Geometry Compression

Interactive Editing of Multiresolution Meshes (Abstract)

Frutuoso G. M. Silva , University of Beira Interior, Portugal
Abel J. P. Gomes , University of Beira Interior, Portugal
pp. 202-209

Geodesic Paths on Triangular Meshes (Abstract)

Dimas Mart?nez , IMPA-Instituto Nacional de Matem?tica Pura e Aplicada, Brasil
Luiz Velho , IMPA-Instituto Nacional de Matem?tica Pura e Aplicada, Brasil
Paulo Cezar Carvalho , IMPA-Instituto Nacional de Matem?tica Pura e Aplicada, Brasil
pp. 210-217

Efficient Edgebreaker for Surfaces of Arbitrary Topology (Abstract)

H?lio Lopes , PUC-Rio - Rio de Janeiro, Brazil
Thomas Lewiner , PUC-Rio - Rio de Janeiro, Brazil; INRIA, France
Jarek Rossignac , GATECH, GVU Center, USA
Ant?nio Wilson Vieira , PUC-Rio - Rio de Janeiro, Brazil; UNIMONTES - CCET, Brazil
pp. 218-225

Multi-Resolution Triangulations with Adaptation to the Domain Based on Physical Compression (Abstract)

Luiz Velho , IMPA - Instituto de Matem?tica Pura e Aplicada
Claudio Esperan? , UFRJ - Universidade Federal do Rio de Janeiro
Ricardo Marroquim , UFRJ - Universidade Federal do Rio de Janeiro
Paulo Roma Cavalcanti , UFRJ - Universidade Federal do Rio de Janeiro
pp. 226-233

Hierarchical Isocontours Extraction and Compression (Abstract)

Thomas Lewiner , PUC-Rio, Rio de Janeiro, Brazil; INRIA, Sophia Antipolis, France
Luiz Velho , IMPA, Rio de Janeiro, Brazil
Vinicius Mello , IMPA, Rio de Janeiro, Brazil
H?lio Lopes , PUC-Rio, Rio de Janeiro, Brazil
pp. 234-241
7: Curves and Surfaces

Fast, Precise Flattening of Cubic B?zier Segment Offset Curves (Abstract)

Sri Venkat R. Racherla , SL Technologies, Biloxi, MS
David D. Langan , University of South Alabama, Mobile, AL
Thomas F. Hain , University of South Alabama, Mobile, AL
pp. 244-249

Arc-Length Based Curvature Estimator (Abstract)

Jo?o D. Gomes Jr. , PUC-Rio, Rio de Janeiro, Brazil
Marcos Craizer , PUC-Rio, Rio de Janeiro, Brazil
Thomas Lewiner , PUC-Rio, Rio de Janeiro, Brazil; INRIA, Sophia Antipolis, France
H?lio Lopes , PUC-Rio, Rio de Janeiro, Brazil
pp. 250-257

Fast Polygonization of Variational Implicit Surfaces (Abstract)

Paulo Roma Cavalcanti , COPPE/Universidade Federal do Rio de Janeiro
Claudio Esperan? , COPPE/Universidade Federal do Rio de Janeiro
Antonio Oliveira , COPPE/Universidade Federal do Rio de Janeiro
Alvaro Cuno , COPPE/Universidade Federal do Rio de Janeiro
pp. 258-265

Curvature Dependent Polygonization of Implicit Surfaces (Abstract)

Joaquim Armando Pires Jorge , INESC-ID/IST/Technical University of Lisbon, Portugal
Bruno Rodrigues de Ara? , INESC-ID/IST/Technical University of Lisbon, Portugal
pp. 266-273

A Deformable Surface Model on the Basis of the Theory of a Cosserat Surface (Abstract)

Vanio Fragoso de Melo , Federal University of Campina Grande, Brazil
Wu Shin-Ting , State University of Campinas, Brazil
pp. 274-281
8: Graphics Hardware and Rendering

Software Shaders in Interactive Environments Using Relief Impostors (Abstract)

Marcelo Dreux , ICAD/IGames/VisionLab, PUC-Rio
Francisco Fonseca , ICAD/IGames/VisionLab, PUC-Rio
Bruno Feij? , ICAD/IGames/VisionLab, PUC-Rio
Esteban W. G. Clua , ICAD/IGames/VisionLab, PUC-Rio
pp. 284-291

A Load-Balancing Strategy for Sort-First Distributed Rendering (Abstract)

Jo?o Luiz Campos , Tecgraf, PUC-Rio, Brasil
Renato Cerqueira , Tecgraf, PUC-Rio, Brasil
Waldemar Celes , Tecgraf, PUC-Rio, Brasil
Frederico Abraham , Tecgraf, PUC-Rio, Brasil
pp. 292-299

Multiple-Depth Shadow Maps (Abstract)

Christian Azambuja Pagot , Instituto de Inform?tica - UFRGS
Manuel Menezes de Oliveira Neto , Instituto de Inform?tica - UFRGS
Jo?o Luiz Dihl Comba , Instituto de Inform?tica - UFRGS
pp. 308-315

Specular Reflection Reduction with Multi-Flash Imaging (Abstract)

Kar-Han Tan , Mitsubish Electric Research Labs
Rogerio Feris , University of California, Santa Barbara
Matthew Turk , University of California, Santa Barbara
Ramesh Raskar , Mitsubish Electric Research Labs
pp. 316-321
9: Virtual Reality, Visualization and Modeling

On Extending Collaboration in Virtual Reality Environments (Abstract)

Marta Fair? , Universitat Polit?cnica de Catalunya, Barcelona, Spain
V?ctor Theoktisto , Universitat Polit?cnica de Catalunya, Barcelona, Spain
pp. 324-331

Collaborative Virtual Training Using Force Feedback Devices (Abstract)

Maria Andr?ia Formico Rodrigues , Universidade de Fortaleza (UNIFOR), Brasil
Wendel Bezerra Silva , Universidade de Fortaleza (UNIFOR), Brasil
Ricardo R?gis Cavalcante Chaves , Universidade de Fortaleza (UNIFOR), Brasil
pp. 332-339

Viz3D: Effective Exploratory Visualization of Large Multidimensional Data Sets (Abstract)

Maria Cristina Ferreira de Oliveira , Universidade de S?o Paulo, Brasil
Almir Olivette Artero , Universidade de S?o Paulo, Brasil
pp. 340-347

Morphing Textures with Texton Masks (Abstract)

Leandro Tonietto , UNISINOS
Marcelo Walter , UNISINOS
pp. 348-353

Motion Reconstruction using Moments Analysis (Abstract)

Luiz Velho , IMPA-Instituto Nacional de Matem?tica Pura e Aplicada, Rio de Janeiro, RJ, Brasil
Paulo Cezar P. Carvalho , IMPA-Instituto Nacional de Matem?tica Pura e Aplicada, Rio de Janeiro, RJ, Brasil
Lourena Rocha , IMPA-Instituto Nacional de Matem?tica Pura e Aplicada, Rio de Janeiro, RJ, Brasil
pp. 354-361
10: Modeling

Loop Snakes: Snakes with Enhanced Topology Control (Abstract)

Cl?udio Esperan? , COPPE/UFRJ, Rio de Janeiro - R.J., Brazil
Gilson Giraldi , National Lab. of Scientific Computing, Brazil
Ricardo Farias , COPPE/UFRJ, Rio de Janeiro - R.J., Brazil
Saulo Ribeiro , COPPE/UFRJ, Rio de Janeiro - R.J., Brazil
Antonio Oliveira , COPPE/UFRJ, Rio de Janeiro - R.J., Brazil
pp. 364-371

Restricted BPA: Applying Ball-Pivoting on the Plane (Abstract)

Luiz Velho , IMPA-Instituto de Matem?tica Pura e Aplicada, Brazil
Esdras Medeiros , IMPA-Instituto de Matem?tica Pura e Aplicada, Brazil
H?lio Lopes , PUC-Pontif?cia Universidade Cat?lica, Brazil
pp. 372-379

Adaptive Deformable Models (Abstract)

Christian Vogler , Gallaudet Research Institute, Washington DC, USA
Siome Goldenstein , UNICAMP-Universidade Estadual de Campinas, Brasil
Luiz Velho , IMPA-Instituto de Matem?tica Pura e Aplicada, Rio de Janeiro, Brazil
pp. 380-387

Automatic Image Alignment for 3D Environment Modeling (Abstract)

Marc Pollefeys , University of North Carolina at Chapel Hill
Anselmo Lastra , University of North Carolina at Chapel Hill
Chad Hantak , University of North Carolina at Chapel Hill
Nathaniel Williams , University of North Carolina at Chapel Hill
Kok-Lim Low , University of North Carolina at Chapel Hill
pp. 388-395

Space Carving with a Hand-Held Camera (Abstract)

Luiz Velho , IMPA-Instituto Nacional de Matem?tica Pura e Aplicada, Brasil
Anselmo Antunes Montenegro , IMPA-Instituto Nacional de Matem?tica Pura e Aplicada, Brasil
Marcelo Gattass , Puc-Rio - Departamento de Inform?tica, Brasil
Paulo C. P. Carvalho , IMPA-Instituto Nacional de Matem?tica Pura e Aplicada, Brasil
pp. 396-403

Author Index (PDF)

pp. 404-405
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