---

Informações resumidas do Currículo Lattes

Currículo Lattes atualizado em 29/05/2023

Nome em citações bibliográficas: ARAÚJO, A. de A.;Araújo, Arnaldo de A.;de Albuquerque Araújo, Arnaldo;Araújo, Arnaldo Albuquerque;De A. Araújo, A.;A. Araújo;ARAUJO, ARNALDO DE ALBUQUERQUE;A. ARAÚJO, ARNALDO;A. ARAUJO, ARNALDO DE;DE A. ARAUJO, A.;ARAUJO, ARNALDO DE A.;Arajujo, Arnaldo de A.;ARAÚJO, ARNALDO DE ALBUQUERQUE;ARAUJO, A.D.A.;DE A ARAUJO, A.;ARAUJO, A.A.;DE ALBUQUERQUE ARAUJO, A.;DE A., A. ARAUJO;ARAÚJO, A.A.;DE ALBUQUERQUE ARAUJO, ARNALDO;ARAUJO, A. DE A.;DE A. ARAÚJO, ARNALDO;ARAÚJO, ARNALDO A.

---

Projetos de pesquisa em andamento

2019 a Atual

Projeto de Cooperação Internacional CAPES/COFECUB Edital 008/2018 Projeto de Cooperação Internaciona CAPES/COFECUB 933/19, Hierarchical Graph-based Analysis of Image, Video and Multimedia Data. Methods of image, video and multimedia analysis which use hierarchical representation aim to explore the visual representation as region-oriented scale-space. This representation is a set of graph representations at different detail levels in which the representation at finer levels are nested with respect to those at coarser levels producing a hierarchy of partitions. This kind of data structure has been successfully applied to remote sensing, object detection and human action recognition. Despite the several ways for computing hierarchies of partitions, developing efficient and effective methods is not an easy task due to the semantic information which is needed for a segmentation. In fact, the state-of-the-art segmentation methods depend on the good gradients to produce good results. Furthermore, non-hierarchical methods could produce good segmentation results thanks to the (dis)similarity measure used for merging two regions, which can be transformed, without loss of quality, into hierarchical methods which incorporate some new properties. Thus, the main goal of this study is to advance in the state-of-the-art on \textit{hierarchy of partitions} taking into account aspects of efficiency, quality, making hierarchical and interactivity, as well as the use of hierarchical information to help in the information extraction and the label propagation. Moreover, we will investigate hierarchical visualization of all, image, video and multimedia, by using countour saliency maps. Finally, we will explore the criteria for hierarchical comparison and for hierarchical combination taking into account their contour saliency maps and learning methods. The results of these studies will be used for solving several applications like human action recognition, pornography detection, image and video region labeling, multimedia label propagation, image and video inpainting, among others. We will build upon existing research and skills at ESIEE Paris, Université Gustave Eiffel, LIGM, IRISA Rennes, Grenoble INP, UNICAMP, PUC Minas and UFMG to develop collaborative work exploiting complementarily of these institutions. Validade: Jan 2019 a Dez 2022 Integrantes: Silvio Jamil Ferzoli Guimarães (coordenador), Arnaldo de Albuquerque Araújo, Laurent Najman, Jean Cousty, Hélio Pedrini, Alexandre Xavier Falcão, Guillaume Gravier, Yukiko Kenmochi, Jefersson Alex dos Santos, Zenilton Kleber Gonçalves do Patrocínio Júnior, Benjamin Perret, Simon Malinowski, Ewa Kijak, Mauro Dalla Mura, Jocelyn Chanussot.

Projetos de desenvolvimento em andamento

Veja todos os projetos no Currículo Lattes

---

Últimas publicações

Artigos em periódicos

Graph-based image gradients aggregated with random forests
2023. PATTERN RECOGNITION LETTERS.
From video pornography to cancer cells: a tensor framework for spatiotemporal description
2020. MULTIMEDIA TOOLS AND APPLICATIONS.
Hierarchical segmentation from a non-increasing edge observation attribute
2020. PATTERN RECOGNITION LETTERS.
Efficient algorithms for hierarchical graph-based segmentation relying on the Felzenszwalb-Huttenlocher dissimilarity
2019. INTERNATIONAL JOURNAL OF PATTERN RECOGNITION AND ARTIFICIAL INTELLIGENCE.
Combining pixel domain and compressed domain index for sketch based image retrieval
2017. MULTIMEDIA TOOLS AND APPLICATIONS.
Multi-Histogram Equalization Methods for Contrast Enhancement and Brightness Preserving
2007. IEEE Transactions on Consumer Electronics.
Video Segmentation Based on 2D Image Analysis
2003. Pattern Recognition Letters.
Sum of Absolute Grey Level Differences: An Edge-Preserving Smoothing Approach
1985. Electronics Letters.

Trabalhos completos em congressos

Descriptive Image Gradient from Edge-Weighted Image Graph and Random Forests
2021. 2021 34th SIBGRAPI Conference on Graphics, Patterns and Images (SIBGRAPI).
Semantic segmentation with multi-source domain adaptation for radiological images
2021. Workshop of Theses and Dissertations - SIBGRAPI.
A study of observation scales based on Felzenswalb-Huttenlocher dissimilarity measure for hierarchical segmentation
2019. 21st International Conference on Discrete Geometry for Computer Imagery.
FASTensor: A tensor framework for spatiotemporal description
2019. Workshop of Theses and Dissertations - SIBGRAPI.
Algorithms for hierarchical segmentation based on the Felzenszwalb-Huttenlocher dissimilarity
2018. International Conference on Pattern Recognition and Artificial Intelligence. 4
Suavização Espacial: Uma Revisão.
1990. Jornada EPUSP/IEEE em Computação Visual (Artigo Tutorial).

Resumos expandidos em congressos

Sistema computacional automático para análise de estruturas rúpteis, análise geomatemática e representações cartográficas
1997. Simpósio de Quantificação em Geociências.
Comparação de algoritmos de suavização espacial
1994. Simpósio Brasileiro de Computação Gráfica e Processamento de Imagens.
Image coding for storing historical documents in a database
1993. Picture Coding Symposium.
PHOTOPIX: A color image quantization system.
1993. Picture Coding Symposium.
Processamento digital de imagens aplicado à radiografia com nêutrons
1993. Encontro Nacional de Aplicações Nucleares.

Resumos em congressos

Criação de um acervo digital da vida e obra do pintor Alberto da Veiga Guignard
2005. XIV Semana de Iniciação Científica da UFMG.
A hypermedia information system to manage information about restoration and conservation of cultural movable properties
2004. 2nd Latin American Web Congress and the 10th Brazilian Symposium on Multimedia and the Web.
Um Workflow de Digitalização para Geração do Acervo Digital do Cecor
2004. 2nd Latin American Web Congress and the 10th Brazilian Symposium on Multimedia and the Web.
Arcabouço para a Recuperação de Imagens Digitais de Fotografias Históricas Através da Utilização de Ontologias
2004. 1º Forum Brasileiro do Patrimônio Cultural.
Digitalização e Gerenciamento do Acervo sobre Conservação e Restauração de Bens Culturais Móveis do Cecor
2004. 1º Forum Brasileiro do Patrimônio Cultural.

Veja todas as publicações no Currículo Lattes

---

Orientações em andamento

Mestrado

Doutorado

Veja todas as orientações no Currículo Lattes

---