Message from the General Chairs

On behalf of the SIBGRAPI 2017 Organizing Committee, we would like to welcome you to the 30th SIBGRAPI - Conference on Graphics, Patterns and Images, in Niterói, Brazil.

SIBGRAPI 2017 is promoted by the Brazilian Computer Society (SBC). It is held in-cooperation with ACM SIGGRAPH and received financial sponsorship from CAPES, CNPq, FAPERJ, PROPPi UFF, NVIDIA, IBM, and globo.com. Over the past three decades, SIBGRAPI has become a premium forum for researchers, practitioners, and students to share, learn, and advance the state-of-the-art in the areas of computer graphics, visualization, computer vision, image processing, and pattern recognition.

This is the first edition of SIBGRAPI being held in Niterói, a municipality of the state of Rio de Janeiro in the southeast region of Brazil. The city lies across Guanabara Bay facing the city of Rio de Janeiro and forms part of the Rio de Janeiro Metropolitan Area. The word "Niterói" comes from the Tupi language and means "water that hides". It was founded on November 22, 1573, by the Tupi Amerindian chief Araribóia. It makes Niteroi the only Brazilian city to have been founded by a non-Christian, non-assimilated Brazilian Amerindian. The Niterói Contemporary Art Museum (MAC), the city's main landmark, was designed by the famous Brazilian modernist architect Oscar Niemeyer. This remarkable architectural masterpiece will be the scenario of the conference dinner.

The conference venue, the Instituto de Computação of the Universidade Federal Fluminense (IC-UFF), is located in a privileged area of Niterói, within walking distance of the conference's hotel, restaurants, and the Niterói Contemporary Art Museum.

We would like to take this opportunity to thank all the volunteers, invited speakers, program chairs, tutorial chairs, workshop chairs, authors, sponsors, and participants for their contributions that help make SIBGRAPI 2017 successful!

Welcome to Niterói and enjoy SIBGRAPI 2017!

Marcos Lage, Leandro A. F. Fernandes, Ricardo Marroquim, and Hélio Lopes
SIBGRAPI 2017 General Chairs

Message from the Program Chairs

SIBGRAPI 2017 - The Conference on Graphics, Patterns and Images, is an international venue annually promoted by the Brazilian Computer Society (SBC). The proceedings of the event have been published by IEEE Computer Society Press since 1997. In addition, SIBGRAPI 2017 includes two pre-conference events whose proceedings are published as Special Sections of Elsevier's Computers & Graphics Journal and of the IEEE's Geoscience and Remote Sensing Letters, and a post-conference publication as a Special Issue of Elsevier's Journal of Visual Communication and Image Representation.

The 30th edition of SIBGRAPI is being jointly organized by the Instituto de Computação of the Universidade Federal Fluminense (IC-UFF), the Programa de Engenharia de Sistemas e Computação of the Universidade Federal do Rio de Janeiro (PESC-COPPE-UFRJ), and by the Departamento de Informática of the Pontifícia Universidade Católica do Rio de Janeiro (DI, PUC-Rio). It will be held in Niterói-RJ from October 17 to 20, 2017. SIBGRAPI 2017 was a unique opportunity for participants to attend the technical sessions, the mini courses, the workshops and the four keynotes, while enjoying the beautiful view of Guanabara Bay.

This year, SIBGRAPI featured a particularly rich technical program including 60 accepted full papers published in the conference proceedings (by IEEE CS Press), 9 full papers published in a Special Section of Elsevier's Computers & Graphics Journal, and 7 full papers published in a Special Stream of the IEEE's Geoscience and Remote Sensing Letters journal.

Each paper received three or more reviews from members of the Program Committee to ensure high standards of quality. Those published on the conference proceedings underwent a one-stage double blind review process, while the ones published in the Special Section of the Elsevier's Computers & Graphics Journal and IEEE's Geoscience and Remote Sensing Letters underwent a three-stage double-blind review process.

From the 75 papers presented at the conference, 52 were delivered as oral communications and 23 as posters (due to time constraints) grouped into 12 thematic sessions.

Five outstanding keynote speakers further enriched the SIBGRAPI 2017 program:

  • Daniele Panozzo (NYU): Generalized Tangent Vector Fields;
  • Joaquim Jorge (ULisboa): Full Contact - Beyond 2D Interactive Surfaces;
  • Kostas Daniilidis (UPenn): Learning 3D Human and Object Pose;
  • Luiz Henrique de Figueiredo (IMPA): Interval Methods for Computer Graphics and Geometric Modeling;
  • Zicheng Liu (Microsoft Research): Visual Understanding with RGB-D Sensors and its Applications in a Collaboration Environment.

In addition, SIBGRAPI 2017 will also host the following events:

  • Workshop of Theses and Dissertations;
  • Workshop of Undergraduate Works;
  • Works in Progress;
  • Workshop of Industry Applications;
  • 7th Workshop on Visual Analytics, Information Visualization and Scientific Visualization;
  • 2nd Workshop on Pattern Recognition for Earth Observation.

and four tutorials:

  • Everything You Wanted to Know About Deep Learning for Computer Vision but Were Afraid to Ask;
  • Face Analysis in the Wild;
  • A Review of Texture Classification Methods and Database;
  • Geometric Data Analysis Based on Manifold Learning with Applications for Image Understanding.

The SIBGRAPI 2017 Program Chairs wish to acknowledge all the persons who contributed to the successful organization of the program: Marcos Lage (Conference Chair, UFF), Leandro A. F. Fernandes (Conference Chair, UFF), Ricardo Marroquim (Conference Chair, UFRJ), and Hélio Lopes (Conference Chair, PUC-Rio). We acknowledge Randall Bilof, IEEE Computer Society, editor of the conference proceedings and all the IEEE Computer Society team. Also the continuous support of Joaquim Jorge, Editor-in-Chief of Computers & Graphics, and all the Elsevier team as well as the Editor-in-Chief of IEEE Geoscience and Remote Sensing Letters Alejandro C. Frery and the Guest Editors: Hélio Lopes, João Paulo Papa and Jefersson dos Santos. We are grateful to all of the members of the Program Committee for all your hard work in the reviewing process.

Rafael P. Torchelsen, Daniele Panozzo, Erickson R. Nascimento, and Zicheng Liu
SIBGRAPI 2017 Program Chairs

Message from the Tutorial Chairs

Tutorials of SIBGRAPI 2017 received proposals in Computer Vision (CV) and Pattern Recognition (PR). All tutorials were blindly reviewed by at least two experts in the topic and judged by some criteria as: relevance for the conference, expected size of the audience, potential to attract participants to the conference, originality and qualification of the instructors in the topic of the tutorial.

The four accepted tutorials are going to be presented in the first day of the conference, held in Niterói, Rio de Janeiro, Brazil, and will be free of charge to all conference attendees. In addition, the authors of the selected tutorials prepared a survey paper in English, in the tutorial's topic, and submitted to the IEEE Xplore Digital Library after being peer reviewed.

We would like to thank all authors and the reviewers for the great work and wish a very productive day to all attendees!

Mylène C. Q. Farias and Thales Vieira
SIBGRAPI 2017 Tutorial Program Chairs

Message from the Workshop of Theses and Dissertations Chairs

The Workshop of Theses and Dissertations (WTD) is a venue for publishing six-page condensed papers of theses and dissertations concluded in the last year. The workshop aims to advertise the works and also motivate discussions around the graduate-level research related to the topics covered by SIBGRAPI.

Accepted works, written either in Portuguese or English, are included in the electronic proceedings and presented in a poster session. This year, we received 17 submissions. Each paper has been evaluated by two different reviewers and, in the end, disregarding the withdrawn papers, a total of 14 works have been accepted.

We would like to thank the authors for their contribution, and the reviewers for their effort and dedication. We would like also to congratulate the local organizing committee and the program committee for their hard work to make this event possible.

João D. Comba and Nina Hirata
SIBGRAPI 2017 WTD Chairs

Message from the Workshop of Undergraduate Works Chairs

The main goals of the Workshop of Undergraduate Works (WUW) are to motivate undergraduate students involved in research projects on Computer Graphics, Image Processing and Computer Vision to attend the SIBGRAPI conference, and to provide opportunities and environment for these students to present and discuss their research among themselves and with experts in the area. Accepted works are included in the electronic proceedings, formatted in four-page papers and written either in Portuguese or in English. This year, the three best works presented at the WUW poster session will receive a best-paper award and a special recommendation for publication at Revista Eletrônica de Iniciação Científica (REIC).

This year, we accepted 19 out of 21 submissions for poster presentation during the SIGBRAPI-WUW. In the review phase, each paper was evaluated by at least two reviewers.

We would like to thank the authors for their contributions, and the reviewers, who dedicated their valuable time to evaluate the submitted papers. Finally, we would like to congratulate the local organizing committee and the program committee for their excellent work in leading the SIBGRAPI activities.

Creto Vidal and Marcelo S. Porto
SIBGRAPI 2017 WUW Chairs

Message from the Workshop of Works in Progress Chairs

The Workshop of Works in Progress (WiP) provides a forum for discussing ongoing research, development projects, issues on transferring research to industrial applications and general technical information in all areas of Computer Graphics, Image Processing and Computer Vision. In this year we have received 18 ongoing studies. From those, after a very careful reviewing cycle, 11 papers have been selected to be presented in a poster session. All submissions have been reviewed, double-blindly, by at least two reviewers.

We congratulate the authors and thank them for helping us in maintaining the high scientific level of this track through the submission of such high quality research work. Reviewers also play a fundamental role in maintaining the high scientific standards of this track by defining the selected papers and giving advice to the authors so that they can enrich the final version of their manuscripts. Thus, we thank all reviewers for their voluntary work, criticism and generous comments on the submitted papers. Last, but not least, we would like to acknowledge the local organization committee and the program committee for the excellent work leading the SIBGRAPI 2017 activities.

We look forward to seeing you at the Workshop of Works in Progress!

Christian Azambuja Pagot and Fabiano Petronetto
SIBGRAPI 2017 WiP Chairs

Message from the Workshop on Industry Applications Chairs

The Workshop on Industry Applications (WIA) is a forum dedicated to solutions based on graphics, patterns, and images, for industry applied problems. Contributions feature innovative use of original or known methods and/or tools from interactive graphics and visualization, machine vision, and image processing.

In 2017, WIA receives five invited speakers: Ismael Santos and Luciano Reis from Petrobras (Brazil), Márcio Aguiar from NVIDIA (Brazil), Paulo Sousa from Epic Games (Brazil) and Pablo Bioni from TV Globo (Brazil). This year, we received 11 paper submissions, and each paper was evaluated, double-blind, by at least two reviewers. Eight papers were accepted and will be presented orally.

We now urge the academic and industrial research communities to attend the workshop, and enjoy this under development environment to showcase research efforts describing visualization and/or graphics-based solutions for applied problems.

We look forward to seeing you at WIA - SIBGRAPI!

Flávio Cardeal and Esteban Clua
SIBGRAPI 2017 WIA Chairs

Workshop on Visual Analytics, Information Visualization and Scientific Visualization

We would like to welcome all participants of the 7th Workshop on Visual Analytics, Information Visualization and Scientific Visualization (WVIS 2017). The main goals of our workshop is to serve as a forum to discuss recent advances in the area of data visualization as well as to foster new research and collaborations in Brazil.

In its seventh edition, WVIS will feature presentations of 7 accepted works with contributions ranging the three big areas of data visualization: Scientific Visualization, Information Visualization and Visual Analytics. We are happy to have a wide set of nationalities among the participants of the workshop and hope this interaction will indeed stimulate the growth of the field in our country. The workshop will also feature a plenary lecture by Dr. Claudio Silva one of the world leaders in the field.

We would also to take this opportunity to acknowledge the thematic workshops chairs and the local organization committee for their support and the excellent work leading the SIBGRAPI activities.

We look forward to seeing you at WVIS 2017!

Nivan Ferreira, Luis Gustavo Nonato, and Filip Sadlo
SIBGRAPI 2017 WVIS Chairs

Message from the Workshop on Pattern Recognition for Earth Observation Chairs

We would like to welcome all participants of the Workshop on Pattern Recognition for Earth Observation. The main objective of this workshop is to stimulate collaboration between the Computer Vision and Remote Sensing communities in Brazil, by putting together researchers from both areas. We expect to encourage new initiatives for automated interpretation of Earth Observation data, and raise knowledge inside the vision community for this highly challenging and quickly evolving field of research with a big impact on human society, economy, industry, and the planet.

In its second edition, the workshop will feature three lectures by distinguished researchers, covering very hot research subjects, which includes advanced machine learning techniques, such as deep learning, and multi-temporal image analysis.

We take this opportunity to acknowledge the thematic workshops chairs and the local organization committee for their support and the excellent work leading the SIBGRAPI activities. We also thank IEEE GRSS Brazil's Chapter for its financial support.

We look forward to seeing you at the Workshop on Pattern Recognition for Earth Observation!

Jefersson dos Santos, Raul Feitosa, and Thales Körting
SIBGRAPI 2017 WPREO Chairs

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