Important dates


Papers submission
May 4th, 2012
May 14th, 2012

Notification of Acceptance
June 17th, 2012
June 26th, 2012
June 30th, 2012

Camera ready due
July 6th, 2012
July 15th, 2012
July 20th, 2012


Submission deadline
April 19th, 2012

Notification of acceptance
April 25th, 2012
May 8th, 2012


Submission deadline
May 6th, 2012
May 13th, 2012

Notification of acceptance
May 27th, 2012
May 31st, 2012

Survey paper due
June 24th, 2012
July 15th, 2012

Camera ready due
August 7th, 2012

Handouts due
July 31st, 2012
August 5th, 2012


Abstract due date
May 16th, 2012

Submission deadline
May 20th, 2012
May 25th, 2012

Notification of acceptance
June 20th, 2012
June 22nd, 2012

Camera ready due
July 8th, 2012


Papers submission
May 11th, 2012
May 21st, 2012

Notification of acceptance
June 24th, 2012
July 1st, 2012
July 3rd, 2012

Camera ready due
July 8th, 2012
July 12th, 2012
July 15th, 2012


Submission deadline
June 25th, 2012
July 2nd, 2012
July 6th, 2012

Notification of acceptance
July 16th, 2012
July 18th, 2012
July 24th, 2012

Camera ready due
July 31st, 2012
August 2nd, 2012


Submission deadline
June 24th, 2012
July 4th, 2012

Notification of acceptance
July 18th, 2012
July 24th, 2012
July 26th, 2012

Camera ready due
July 29th, 2012
August 1st, 2012
August 5th, 2012


Submission deadline
July 15th, 2012
August 1st, 2012

Notification of acceptance
August 1st, 2012
August 5th, 2012

Camera ready due
August 7th, 2012

Sponsorship / Organization

Technical Co-Sponsorship







Technical Papers

Awards - Full Papers

(best paper)
Connectivity Oblivious Merging of Triangulations
L. F. Silva (UFRGS), L. F. Scheidegger (UFRGS), T. Etiene (University of Utah), J. Comba (UFRGS), L. G. Nonato (ICMC-USP), C. T. Silva (NYU).

(best student paper)
Open-set Source Camera Attribution
F. O. Costa (UNICAMP), M. Eckmann (Skidmore College), W. J. Scheirer (Securics Inc.), A. Rocha (UNICAMP).


It was posted as a mistake that the Best Student paper was awarded to the paper:
An Efficient Algorithm for Fractal Analysis of Textures
A. F. Costa (ICMC-USP), G. E. Humpire-Mamani (ICMC-USP), A. J. M. Traina (ICMC-USP).

Sorry for any inconvenience.

(honorable mention - student paper)
Efficient HPR-based Rendering of Point Clouds
R. M. Silva (UFRJ), C. Esperança (UFRJ), A. Oliveira (UFRJ).

Technical Session TS1 - Image/Video Filtering, Restoration and Segmentation
(Thursday, August 23rd, 2012 / 09:00 - 10:45)
Chair: N. Mascarenhas (UFSCar)

Unraveling the Compromise Between Skull Stripping and Inhomogeneity Correction in 3T MR Images
F. A. M. Cappabianco (UNIFESP), P. A. V. Miranda (IME-USP), J. S. Ide (UNIFESP), C. L. Yasuda (FCM-UNICAMP), A. X. Falcão (IC-UNICAMP).

Analysis in Sensibility of a Motion Detection Algorithm for Selecting Noise Reduction Methods in X-ray Image Sequences
L. S. Silva (PUC-Minas), F. R. Rocha (PUC-Minas), L. B. Amaral (PUC-Minas), C. A. Carneiro (PUC-Minas), F. M. F. Ferreira (PUC-Minas), Z. M. A. Peixoto (PUC-Minas).

Contextual Filtering of CT Images Using Markovian Wiener Filters With a Non Local Means Approach for Statistical Estimation
D. H. P. Salvadeo (UFSCar), N. D. A. Mascarenhas (UFSCar), A. L. M. Levada (UFSCar).

Segmentation of Large Images with Complex Networks
O. Cuadros (ICMC-USP), G. Botelho (ICMC-USP), F. Rodrigues (ICMC-USP), J. Batista Neto (ICMC-USP)

Technical Session TS2 - Feature Extraction and Matching
(Thursday, August 23rd, 2012 / 09:00 - 10:45)
Chair: L. G. Nonato (ICMC-USP)

Colorization by Multidimensional Projection
W. Casaca (ICMC-USP), E. Gomez-Nieto (ICMC-USP), C. O.L. Ferreira (PUC-Rio), G. Tavares (PUC-Rio), P. Pagliosa (UFMS), F. Paulovich (ICMC-USP), L. G. Nonato (ICMC-USP), A. Paiva (ICMC-USP).

An Efficient Algorithm for Fractal Analysis of Textures
A. F. Costa (ICMC-USP), G. E. Humpire-Mamani (ICMC-USP), A. J. M. Traina (ICMC-USP).

Appearance and Geometry Fusion for Enhanced Dense 3D Alignment
E. R. Nascimento (UFMG), W. R. Schwartz (UFMG), G. L. Oliveira (UFMG), A. W. Vieira (UNIMONTES), M. F. M. Campos (UFMG), D. B. Mesquita (UFMG).

Histogram Uniformization for Digital Image Encryption
J. B. Lima (UFPE), R. M. C. Souza (UFPE).

Technical Session TS3 - Image/Video Analysis
(Thursday, August 23rd, 2012 / 14:00 - 15:45)
Chair: A. Rocha (UNICAMP)

Solving Image Puzzles with a Quadratic Programming Formulation
F. Andaló (UNICAMP), G. Taubin (Brown University), S. Goldenstein (UNICAMP).

Open-set Source Camera Attribution
F. O. Costa (UNICAMP), M. Eckmann (Skidmore College), W. J. Scheirer (Securics Inc.), A. Rocha (UNICAMP).

Multi-Scale Spectral Residual Analysis to Speed up Image Object Detection
G. Silva (UFBA), L. Schnitman (UFBA), L. Oliveira (UFBA).

Image micro-pattern analysis using fuzzy numbers
R. T. Vieira (EESC-USP), C. E. O. Chierici (EESC-USP), C. T. Ferraz EESC-USP, A. Gonzaga (EESC-USP).

Technical Session TS4 - Geometric Modeling and Computational Geometry
(Thursday, August 23rd, 2012 / 14:00 - 15:45)
Chair: L. H. Figueiredo (IMPA)

Approximating implicit curves on triangulations with affine arithmetic
A. Paiva (ICMC-USP), F. C. Nascimento (ICMC-USP), L. H. Figueiredo (IMPA), J. Stolfi (UNICAMP).

3D Triangulations for Industrial Applications
P. R. Cavalcanti (UFRJ), Y. P. Atencio (UFRJ), C. Esperança (UFRJ), F. P. Nascimento (UFRJ).

ESQ: Editable SQuad representation for triangle meshes
L. C. Aleardi (École Polytechnique), O. Devillers (INRIA Sophia-Antipolis), J. Rossignac (GATECH).

Connectivity Oblivious Merging of Triangulations
L. F. Silva (UFRGS), L. F. Scheidegger (UFRGS), T. Etiene (University of Utah), J. Comba (UFRGS), L. G. Nonato (ICMC-USP), C. T. Silva (NYU).

Technical Session TS5 - Rendering and Visualization
(Friday, August 24th, 2012 / 09:00 - 10:45)
Chair: J. Comba (UFRGS)

Efficient HPR-based Rendering of Point Clouds
R. M. Silva (UFRJ), C. Esperança (UFRJ), A. Oliveira (UFRJ).

Memory-Efficient Order-Independent Transparency with Dynamic Fragment Buffer
M. Maule (UFRGS), J. Comba (UFRGS), R. Torchelsen (UFFS), R. Bastos (NVIDIA).

Ambient occlusion using cone tracing with scene voxelization
E. C. D. Favera (PUC-Rio), W. Celes (PUC-Rio).

Rapid Visualization of Geological Concepts
M. Natali (University of Bergen), I. Viola (University of Bergen), D. Patel (Christian Michelsen Research).

Technical Session TS6 - Computer Vision
(Friday, August 24th, 2012 / 09:00 - 10:45)
Chair: S. Goldenstein (UNICAMP)

Invariance for Single Curved Manifold
P. M. M. Castro (UFPE).

Robust Patch-Based Pedestrian Tracking using Monocular Calibrated Cameras
G. Führ (UFRGS), C. R. Jung (UFRGS).

Automatic tracking of indoor soccer players using videos from multiple cameras
E. Morais (UNICAMP), S. Goldenstein (UNICAMP), A. Ferreira (UNICAMP), A. Rocha (UNICAMP).

Real-time Interactive Image Segmentation Using User Indicated Real-world Seeds
R. B. Gomes (UFRN), R. V. Aroca (UFRN), B M. Carvalho (UFRN), L. M. G. Gonçalves (UFRN).

Technical Session TS7 - Modeling, Animation and Simulation
(Saturday, August 25th, 2012 / 09:00 - 10:45)
Chair: A. Oliveira (UFRJ)

Modeling the Copacabana Sidewalk Pavement
T. Waintraub (PUC-Rio), W. Celes (PUC-Rio).

Representing and Manipulating Mesh-based Character Animations
E. Aguiar (UFES), N. Ukita (Nara Institute of Science and Technology).

Fluid Simulation on Surfaces in the GPU
L. Carvalho (IMPA), M. Andrade (UFAL), L. Velho (IMPA).

Enhanced Target Driven Smoke Morphing
M. C. Renhe (UFJF), A. Oliveira (UFRJ), C. Esperança (UFRJ), R. Marroquim (UFRJ).

Technical Session TS8 - Image/Video Analysis
(Saturday, August 25th, 2012 / 09:00 - 10:45)
Chair: R. Lotufo (UNICAMP)

Video-Based Face Spoofing Detection through Visual Rhythm Analysis
A. Pinto (UNICAMP), H. Pedrini (UNICAMP), W. Schwartz (UFMG), A. Rocha (UNICAMP).

Retinal Image Quality Analysis for Automatic Diabetic Retinopathy Detection
R. Pires (UNICAMP), H. F. Jelinek (Charles Sturt University), J. Wainer (UNICAMP), A. Rocha (UNICAMP).

Vehicle Detection using Mixture of Deformable Parts Models: Static and Dynamic Camera
L. C. Leon (IME-USP), R. Hirata Jr. (IME-USP).

A mixture of two gender classification experts
Y. S. El-Din (Ain Shams University), M. Moustafa (The American University in Cairo), H. Mahdi (Ain Shams Univ.).

Technical Session TS9 - Pattern Recognition
(Saturday, August 25th, 2012 / 14:00 - 15:45)
Chair: D. Martínez (UFAL)

Automatic Classifier Fusion for Produce Recognition
F. A. Faria (UNICAMP), J. A. Santos (UNICAMP), A. Rocha (UNICAMP), R. da S. Torres (UNICAMP).

A Comparison between Optimum-Path Forest and k-Nearest Neighbors Classifiers
R. Souza (UNICAMP), R. Lotufo (UNICAMP), L. Rittner (UNICAMP).

Real-time gesture recognition from depth data through key poses learning and decision forests
L. Miranda (UFAL), T. Vieira (UFAL), D. Martínez (UFAL), T. Lewiner (PUC-Rio), A. W. Vieira (UNIMONTES), Mario F. M. Campos (UFMG)

Searching for People through Textual and Visual Attributes
J. Fabian (UNICAMP), R. Pires (UNICAMP), A. Rocha (UNICAMP).

Technical Session TS10 (Poster) - Texture Synthesis and Image Processing
(Saturday, August 25th, 2012 / 15:45 - 17:30)
Chair: C. Freitas (UFRGS) and D. Menotti (UFOP)

Animation and Simulation
Texture Synthesis of Contrasting Natural Patterns
F. Queiroz (UFAL), M. Walter (UFRGS).

Feature Extraction and Matching
BBA: A Binary Bat Algorithm for Feature Selection
R. Y. M. Nakamura (UNESP), L. A. M. Pereira (UNESP), K. A. Costa (UNESP), D. Rodrigues (UNESP), J. P. Papa (UNESP), X.-S. Yang (National Physical Laboratory).

A tensor based on optical flow for global description of motion in videos
V. F. Mota (UFJF), E. A. Perez (UFJF), M. B. Vieira (UFJF), L. M. Maciel (UFJF), F. Precioso (ENSEA), P.-H. Gosselin (ENSEA).

Multi-Modal Acoustic Echo Canceller for Video Conferencing Systems
M. Gazziro (ICMC-USP), G. Almeida (Wernher von Braun Center), P. Matias (IFSC-USP), H. Tanaka (TOSHIBA Co.), S. Minami (TOSHIBA Co.).

Image/Video Analysis
Error Concealment Using a Halftoning Watermarking Technique
P. G. Freitas (UnB), R. Rigoni (UnB), M. C. Q. Farias (UnB), A. P. F. Araújo (UnB).

Pattern Recognition
Structural Analysis of Histological Images to Aid Diagnosis of Cervical Cancer
G. H. B. Miranda (FFCLRP/USP), J. Barrera (IME-USP), E. G. Soares (FFCLRP-USP), J. C. Felipe (FCM-USP).

Improving Image Classification Through Descriptor Combination
A. Mansano (USP), J. A. Matsuoka (UNESP), L. C. S. Afonso (USP), J. P. Papa (UNESP), F. Faria, R. da S. Torres (UNICAMP).

Supervised Learning Using Local Analysis in an Optimal-Path Forest
W. P. Amorim (UFMS), M. H. Carvalho (UFMS).

Computing gender difference using Fisher-Rao metric from facial surface normals
S. R. Ceolin (Centro Universitário Franciscano), E. R. Hancock (University of York).

Call for Contributions for the Technical Papers Track

The technical papers track of SIBGRAPI 2012 welcomes submissions describing research, practice, experience and applications in all areas of Computer Graphics, Computer Vision, Image Processing, and Pattern Recognition, including but not limited to the following topics: Animation and simulation, Biomedical imaging and visualization, Biometrics, Computational geometry, Computer vision and robotics, Document processing and analysis, Feature extraction and matching, Games, Geometric and solid modeling, Graphical interfaces, Graphics hardware, Image and video analysis, filtering and restoration, Image and video registration, retrieval and segmentation, Information visualization, Visual learning, Mathematical morphology, Mobile graphics, Motion and tracking, Non-photorealistic rendering, Pattern recognition, Point-based modeling, Real-time imaging and rendering, Remote sensing and geophysical imaging, Scientific visualization, Shape representation and matching, Simplification and compression, Stereo/3D imaging, Surface reconstruction, Virtual and augmented reality and Visual data mining.

The paper length should not exceed 8 pages (IEEE format). All full papers are double blindly reviewed by at least three experts in the topic of the work, and all papers recommended by the reviewers will be accepted. All accepted papers are published in the proceedings of the conference (submitted to IEEE Xplore) and scheduled for oral or poster presentation. From 1997 to 2008, SIBGRAPI proceedings were published by IEEE Computer Science, by CPS since then, and since 1996, at the SIBGRAPI Digital Library Archive, maintained by Instituto Nacional de Pesquisas Espaciais (INPE).

As in previous SIBGRAPI editions, the authors of the best papers will be invited to submit extended versions of their work to highly ranked international journals in the respective fields. In particular, extended versions of the best papers of previous SIBGRAPI were published in special issues of:
  • Image and Vision Computing (2003)
  • Pattern Analysis and Applications (2004)
  • Computerized Medical Imaging and Graphics (2004)
  • Journal of Mathematical Imaging and Vision (2006)
  • Pattern Recognition Letters (2007, 2008)
  • Computers & Graphics (2007)
  • Computer Graphics Forum (2007, 2009)
  • International Journal of Pattern Recognition and Artificial Intelligence (2010)
  • The Visual Computer (2010)

Important Dates

  • Submission Deadline: May 4th, 2012 May 14th, 2012
  • Notification of Acceptance: June 17th, 2012 June 26th, 2012 June 30th, 2012
  • Camera Ready: July 6th, 2012 July 15th, 2012

Best Paper Selection

The best paper and best student paper will be awarded during the event based on the reviewers' judgment and the quality of the presentation. Moreover, as in previous SIBGRAPI editions, the authors of the best papers will be invited to submit extended versions of their work to highly ranked international journals in the respective fields. In particular, in previous editions, the best computer graphics papers have been published in Computer Graphics Forum and The Visual Computer Journal. This year, the best papers on Computer Graphics related topics will be invited to submit an extended version to be considered for publication in Computer Graphics Forum. The best papers in Image Processing, Computer Vision and Pattern Recognition will be invited to submit an extended version to be reviewed for publication in a special issue of Pattern Recognition Letters.

Author's instruction

The papers must be written in English, formatted according to the IEEE standard. They should not exceed 8 pages, including bibliography and illustrations, and should not contain any information that could identify the author in the submission phase. Works on the same topic may be submitted to other tracks of the event, in particular when related to student work. Further instructions are available at the submission instructions' page.

Oral or Poster Presentation

Each accepted paper will be presented orally or in poster form during the event. The oral presentations must fit in 20 minutes, with additional 5 minutes for questions. The authors will be invited to choose the type of presentation.

Posters Preparation

Posters should be prepared using an area of 90cm x 120 cm at maximum and in a portrait orientation. The use of small fonts on the text production is not recommended. It is not necessary to include the poster in the JEMS system. The authors may follow the SIBGRAPI 2012 poster template in PowerPoint or Corel Draw formats).

Oral Presentation Slides Template

A template for oral presentations using SIBGRAPI 2012's arts is available here.


  • Carla Dal Sasso Freitas (UFRGS - Brazil)
  • Sudeep Sarkar (USF - USA)
  • Luciano Silva (UFPR - Brazil)
  • Roberto Scopigno (CNR - Italy)


Adilson Gonzaga
Adriana Braun
Adriane Parraga
Afonso Paiva
Alec Jacobson
Alejandro Frery
Alessandro Koerich
Alex Cuadros-Vargas
Alexandre Falcao
Alexandre Levada
Alexei Machado
Aline Villavicencio
Alvaro Pardo
Anderson Maciel
Anderson Rocha
André Brandão
André Maximo
Antonio Apolinário Jr.
Antonio Alberto Fernandes de Oliveira
Aparecido Nilceu Marana
Arnaldo de Albuquerque Araújo
Aveek Brahmachari
Bruno Carvalho
Carla Freitas
Carlos da Silva Santos
Carlos Dietrich
Celia Barcelos
Cem Unsalan
Christian Pagot
Christopher Healey
Claudio Esperança
Claudio Jung
Claudio Silva
Daniel Madeira
Daniele Panozzo
David Menotti
Dianna Xu
Dibio Leandro Borges
Diego Nehab
Dmitry Goldgof
Edson Matsubara
Eduardo Simões Lopes Gastal
Emilio Vital Brazil
Ernesto Birgin
Eros Comunello
Esteban Clua
Evandro Luis Linhari Rodrigues
Fabiano Petronetto
Fatima Nunes
Fábio Cappabianco
Fernando Paulovich
Fillipe Souza
Francesco Banterle
Francisco Pinto
Gabriel Taubin
Gabriela Castellano
Gilson Giraldi
Giovani Chiachia
Gladimir Baranoski
Guilherme Oliveira
Guilherme Ruppert
Guillermo Camara-Chavez
Gustavo Führ
Haim Levkowitz
Harlen Batagelo
Hemerson Pistori
Horacio Fortunato
Hugo Proença
Icaro Oliveira
Jacques Facon
Júlia Oliveira
Joao Paulo Gois
Joao Vicente Reis
Joaquim Cavalcante-Neto
Joaquim Jorge
João Comba
João do Espírito Santo Batista Neto
Jorge Guevara
Jorge Poco Medina
Jose Maria Neves
Juan Climent
Julio Jacques
Kaan Yuecer
Karl Apaza Agüero
Leandro Fernandes
Letícia Rittner
Leticia Guimarães
Lucas Lattari
Luciana Nedel
Luis Gustavo Nonato
Luiz Mirisola
Luiz Gonzaga da Silveira Jr
Luiz Henrique de Figueiredo
Marcel Jackowski
Marcelo Siqueira
Marco Alvarez Vega
Marcos Lage
Mariana Bento
Marilena Maule
Mario Lizier
Mario Fernando Campos
Matthew Turk
Mauricio Pamplona
Michel Couprie
Moacir Ponti Jr.
Mu Zhou
Nathalie Henry-Riche
Nelson Delfino D'Ávila Mascarenhas
Nico Pietroni
Olga Sorkine
Paola Llerena-Valdivia
Paulo Andrade
Paulo Gotardo
Paulo Joia
Paulo Miranda
Paulo Pagliosa
Paulo Rodrigues
Priscila Tiemi Maeda Saito
Rafael Torchelsen
Ravi Panchumarthy
Ravi Subramanian
Ravi Kiran Krishnan
Renato Silveira
Ricardo Marroquim
Ricardo Torres
Roberto Hirata Jr.
Roberto Scopigno
Roberto Souza
Ronaldo Prati
Rosália Schneider
Rossana Baptista Queiroz
Rubens Machado
Rubisley Lemes
Sarkar Sudeep
Selan dos Santos
Silvio Guimarães
Soraia Musse
Talita Perciano
Thomas Ertl
Thomas Lewiner
Valguima Odakura
Valter Roesler
Veronica Teichrieb
Vinicius Azevedo
Vitor Augusto Jorge
Waldemar Celes
William Roboson Schwartz
Willian Paraguassu Amorim
Wu Shin-Ting
Xiaoyi Jiang
Yuhua Gu


Cooperating Society

Published by

logo_google logo_microsoft capes cnpq parquemetalurgico eurographics CPS


Powered by Joomla!. Designed by: themes joomla celebrity list Valid XHTML and CSS.