2012 25th SIBGRAPI Conference
on Graphics, Patterns and Images
(SIBGRAPI 2012)
Ouro Preto, Brazil
22 – 25 August 2012
IEEE Catalog Number:
ISBN:
CFP12129-PRT
978-1-4673-2802-9
XXV SIBGRAPI - Conference
on Graphics, Patterns
and Images
SIBGRAPI 2012
Table of Contents
Message from the General and Organizing
Chairs............................................................................................................................................................x
Message from the Program Chairs............................................................................................................xi
Organizing Committee...............................................................................................................................xii
International Program Committee ...........................................................................................................xiv
Reviewers...................................................................................................................................................xvi
Image/Video Filtering, Restoration and Segmentation
Unraveling the Compromise between Skull Stripping and Inhomogeneity
Correction in 3T MR Images .........................................................................................................................1
Fábio A.M. Cappabianco, Paulo A.V. de Miranda, Jaime S. Ide,
Clarissa L. Yasuda, and Alexandre X. Falcão
Analysis in Sensibility of a Motion Detection Algorithm for Selecting Noise
Reduction Methods in X-Ray Image Sequences ..........................................................................................9
Lucas Souza e Silva, Filipe Ribeiro Rocha, Lorena Borges Amaral,
Cássio Alves Carneiro, Flávia Maglhães Freitas Ferreira,
and Zélia Myriam Assis Peixoto
Contextual Filtering of CT Images Using Markovian Wiener Filters with a Non
Local Means Approach for Statistical Estimation ........................................................................................16
Denis H. P. Salvadeo, Nelson D. A. Mascarenhas, and Alexandre L. M. Levada
Segmentation of Large Images with Complex Networks ............................................................................24
Oscar Cuadros, Glenda Botelho, Francisco Rodrigues, and João Batista Neto
v
Feature Extraction and Matching
Colorization by Multidimensional Projection ...............................................................................................32
Wallace Casaca, Erick Gomez-Nieto, Cynthia O. L. Ferreira, Geovan Tavares,
Paulo Pagliosa, Fernando Paulovich, Luis Gustavo Nonato, and Afonso Paiva
An Efficient Algorithm for Fractal Analysis of Textures ...............................................................................39
Alceu Ferraz Costa, Gabriel Humpire-Mamani, and Agma Juci Machado Traina
Appearance and Geometry Fusion for Enhanced Dense 3D Alignment ....................................................47
Erickson R. Nascimento, William Robson Schwartz, Gabriel L. Oliveira,
Antônio W. Veira, Mario F. M. Campos, and Daniel B. Mesquita
Histogram Uniformization for Digital Image Encryption ..............................................................................55
Juliano B. Lima and Ricardo M. Campello de Souza
Image/Video Analysis
Solving Image Puzzles with a Simple Quadratic Programming Formulation ..............................................63
Fernanda A. Andaló. Gabriel Taubin and Siome Goldenstein
Open Set Source Camera Attribution .........................................................................................................71
Filipe de O. Costa, Michael Eckmann, Walter J. Scheirer, and Anderson Rocha
Multi-Scale Spectral Residual Analysis to Speed up Image Object Detection ...........................................79
Grimaldo Silva, Leizer Schnitman, and Luciano Oliveira
Image Micro-pattern Analysis Using Fuzzy Numbers .................................................................................87
Raissa T. Vieira, Carlos Eduardo de Oliveira Chierici, Carolina T. Ferraz,
and Adilson Gonzaga
Geometric Modeling and Computational Geometry
Approximating Implicit Curves on Triangulations with Affine Arithmetic .....................................................94
Afonso Paiva, Filipe de Carvalho Nascimento, Luiz Henrique de Figueiredo,
and Jorge Stolfi
3D Triangulations for Industrial Applications ............................................................................................102
Paulo Roma Cavalcanti, Yalmar Ponce Atencio, Claudio Esperança,
and Flavio Pereira Nascimento
ESQ: Editable SQuad Representation for Triangle Meshes .....................................................................110
Luca Castelli Aleardi, Olivier Devillers, and Jarek Rossignac
Connectivity Oblivious Merging of Triangulations .....................................................................................118
Luis F. Silva, Luiz F. Scheidegger, Tiago Etiene, João L. D. Comba,
Luis G. Nonato, and Cláudio T. Silva
vi
Rendering and Visualization
Efficient HPR-Based Rendering of Point Clouds ......................................................................................126
Renan Machado e Silva, Claudio Esperança, and Antonio Oliveira
Memory-Efficient Order-Independent Transparency with Dynamic Fragment
Buffer ........................................................................................................................................................134
Marilena Maule, João L. D. Comba, Rafael Torchelsen, and Rui Bastos
Ambient Occlusion Using Cone Tracing with Scene Voxelization ............................................................142
Eduardo Ceretta Dalla Favera and Waldemar Celes
Rapid Visualization of Geological Concepts .............................................................................................150
Mattia Natali, Ivan Viola, and Daniel Patel
Computer Vision
Invariance for Single Curved Manifold ......................................................................................................158
Pedro Machado Manhães de Castro
Robust Patch-Based Pedestrian Tracking Using Monocular Calibrated
Cameras ...................................................................................................................................................166
Gustavo Führ and Cláudio Rosito Jung
Automatic Tracking of Indoor Soccer Players Using Videos from Multiple
Cameras ...................................................................................................................................................174
Erikson Morais, Siome Goldenstein, Anselmo Ferreira, and Anderson Rocha
Real Time Interactive Image Segmentation Using User Indicated Real-World
Seeds ........................................................................................................................................................182
Rafael Beserra Gomes, Rafael Vidal Aroca, Bruno Motta de Carvalho,
and Luiz Marcos Garcia Gonçalves
Modeling, Animation and Simulation
Modeling the Copacabana Sidewalk Pavement .......................................................................................190
Tatiana Waintraub and Waldemar Celes
Representing and Manipulating Mesh-Based Character Animations .......................................................198
Edilson de Aguiar and Norimichi Ukita
Fluid Simulation on Surfaces in the GPU .................................................................................................205
Leonardo Carvalho, Maria Andrade, and Luiz Velho
Enhanced Target Driven Smoke Morphing ...............................................................................................213
Marcelo Caniato Renhe, Antonio Oliveira, Cláudio Esperança,
and Ricardo Marroquim
vii
Image/Video Analysis
Video-Based Face Spoofing Detection through Visual Rhythm Analysis .................................................221
Allan da Silva Pinto, Helio Pedrini, William Schwartz, and Anderson Rocha
Retinal Image Quality Analysis for Automatic Diabetic Retinopathy Detection ........................................229
Ramon Pires, Herbert F. Jelinek, Jacques Wainer, and Anderson Rocha
Vehicle Detection Using Mixture of Deformable Parts Models: Static
and Dynamic Camera ...............................................................................................................................237
Leissi Castañeda León and Roberto Hirata Jr.
A Mixture of Two Gender Classification Experts ......................................................................................245
Yomna Safaa El-Din, Mohamed N. Moustafa, and Hani Mahdi
Pattern Recognition
Automatic Classifier Fusion for Produce Recognition ...............................................................................252
Fabio Augusto Faria, Jefersson Alex dos Santos, Anderson Rocha,
and Ricardo da S. Torres
A Comparison between Optimum-Path Forest and k-Nearest Neighbors
Classifiers .................................................................................................................................................260
Roberto Souza, Roberto Lotufo, and Letícia Rittner
Real-Time Gesture Recognition from Depth Data through Key Poses Learning
and Decision Forests ................................................................................................................................268
Leandro Miranda, Thales Vieira, Dimas Martinez, Thomas Lewiner,
Antonio W. Vieira, and Mario F. M. Campos
Searching for People through Textual and Visual Attributes ....................................................................276
Junior Fabian, Ramon Pires, and Anderson Rocha
Texture Synthesis and Image/Video Processing
Texture Synthesis of Contrasting Natural Patterns ...................................................................................283
Fabiane Queiroz and Marcelo Walter
BBA: A Binary Bat Algorithm for Feature Selection ..................................................................................291
R. Y. M. Nakamura, L. A. M. Pereira, K. A. Costa, D. Rodrigues, J. P. Papa,
and X.-S. Yang
A Tensor Based on Optical Flow for Global Description of Motion in Videos ...........................................298
V. F. Mota, E. A. Perez, M. B. Vieira, L. M. Maciel, F. Precioso, and P. H. Gosselin
Multi-Modal Acoustic Echo Canceller for Video Conferencing Systems ..................................................302
Mario Gazziro, Guilherme Almeida, Paulo Matias, Hirokazu Tanaka,
and Shigenobu Minami
viii
Error Concealment Using a Halftone Watermarking Technique ...............................................................308
Pedro Garcia Freitas, Ronaldo Rigoni, Mylène C.Q. Farias,
and Aletéla P.F. de Araújo
Structural Analysis of Histological Images to Aid Diagnosis of Cervical Cancer ......................................316
Gisele Helena Barboni Miranda, Junior Barrera, Edson Garcia Soares,
and Joaquim Cezar Felipe
Improving Image Classification through Descriptor Combination .............................................................324
A. Mansano, J. A. Matsuoka, L. C. S. Afonso, J. P. Papa, F. Faria,
and R. da S. Torres
Supervised Learning Using Local Analysis in an Optimal-Path Forest ....................................................330
Willian Paraguassu Amorim and Marcelo Henriques de Carvalho
Computing Gender Difference Using Fisher-Rao Metric from Facial Surface
Normals ....................................................................................................................................................336
Simone Regina Ceolin and Edwin R. Hancock
Author Index ............................................................................................................................................344
ix