Disparity map production: an architectural proposal and a refinement method design

Detalhes bibliográficos
Ano de defesa: 2018
Autor(a) principal: Vieira, Gabriel da Silva lattes
Orientador(a): Soares, Fabrizzio Alphonsus Alves de Melo Nunes lattes
Banca de defesa: Soares, Fabrizzio Alphonsus Alves de Melo Nunes, Laureano, Gustavo Teodoro, Pedrini, Hélio
Tipo de documento: Dissertação
Tipo de acesso: Acesso aberto
Idioma: eng
Instituição de defesa: Universidade Federal de Goiás
Programa de Pós-Graduação: Programa de Pós-graduação em Ciência da Computação (INF)
Departamento: Instituto de Informática - INF (RG)
País: Brasil
Palavras-chave em Português:
Palavras-chave em Inglês:
Área do conhecimento CNPq:
Link de acesso: http://repositorio.bc.ufg.br/tede/handle/tede/9088
Resumo: Disparity maps are key components of a stereo vision system. Autonomous navigation, 3D reconstruction, and mobility are examples of areas of research which use disparity maps as an important element. Although a lot of work has been done in the stereo vision field, it is not easy to build stereo systems with concepts such as reuse and extensible scope. In this study, we explore this gap and it presents a software architecture that can accommodate different stereo methods through a standard structure. Firstly, it introduces some scenarios that illustrate use cases of disparity maps and it shows a novel architecture that foments code reuse. A Disparity Computation Framework (DCF) is presented and we discuss how its components are structured. Then we developed a prototype which closely follows the proposal architecture and we prepared some test cases to be performed. Furthermore, we have implemented disparity methods for validation purposes and to evaluate our disparity refinement method. This refinement method, named as Segmented Consistency Check (SCC), was designed to increase the robustness of stereo matching algorithms. It consists of a segmentation process, statistical analysis of grouping areas and a support weighted function to find and to fill in unknown disparities. The experimental results show that the DCF can satisfy different scenarios on-demand. Besides, they show that SCC method is an efficient approach that can make some enhancements in disparity maps, as reducing the disparity error measure.