Repositório Digital

A- A A+

Volume sculpting based on geometric tools

.

Volume sculpting based on geometric tools

Mostrar registro completo

Estatísticas

Título Volume sculpting based on geometric tools
Autor Huff, Rafael
Rosa Junior, Roberto Silveira da
Nedel, Luciana Porcher
Freitas, Carla Maria Dal Sasso
Abstract The analysis of volumetric datasets is the main concern in many areas ranging from geophysics to biomedical sciences. The direct visualization of these data plays an important role in this scenario, and in spite of developments in volume visualization techniques, interacting with large datasets still demands research efforts due to perceptual and performance issues. There is a need of interactive sculpting tools which can provide an intuitive way to examine and explore inner parts of the datasets, as well as to fill missing data for specific purposes. In this paper we report the development of interactive, intuitive and easy-to-use sculpting tools, which specify regions within the volume to be discarded from rendering, thus allowing inspection of the volume interior, and to be filled with material to build virtual structures in the volume. Interactive rates for these sculpting tools were obtained by running special fragment programs on the graphics hardware. The tools were implemented using two interaction metaphors (virtual pointer and virtual hand) and following different approaches in terms of devices and single versus two-handed interaction. We report the evaluation of these approaches in detail and concluded that the use of two different devices together presents a better performance and are preferred by users. Moreover, the use of virtual hand interaction provided better results than using the virtual pointer during the tests.
Contido em Journal of the Brazilian Computer Society. Rio de Janeiro. Vol. 15, no 2 (June 2009), p. 3-18
Assunto Computação gráfica
Visualizacao volumetrica
[en] Virtual hand
[en] Virtual pointer
[en] Volume rendering
[en] Volume sculpting
[en] Volumetric data
Origem Nacional
Tipo Artigo de periódico
URI http://hdl.handle.net/10183/72577
Arquivos Descrição Formato
000714403.pdf (10.67Mb) Texto completo (inglês) Adobe PDF Visualizar/abrir

Este item está licenciado na Creative Commons License

Este item aparece na(s) seguinte(s) coleção(ões)


Mostrar registro completo

Percorrer



  • O autor é titular dos direitos autorais dos documentos disponíveis neste repositório e é vedada, nos termos da lei, a comercialização de qualquer espécie sem sua autorização prévia.
    Projeto gráfico elaborado pelo Caixola - Clube de Criação Fabico/UFRGS Powered by DSpace software, Version 1.8.1.