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Doctoral Thesis
DOI
https://doi.org/10.11606/T.55.2007.tde-18062007-155910
Document
Author
Full name
Alex Jesús Cuadros-Vargas
E-mail
Institute/School/College
Knowledge Area
Date of Defense
Published
São Carlos, 2007
Supervisor
Committee
Nonato, Luis Gustavo (President)
Castelo Filho, Antonio
Lewiner, Thomas Maurice
Oliveira, Maria Cristina Ferreira de
Pedrini, Helio
Title in Portuguese
Geração de malhas volumétricas a partir de imagens
Keywords in Portuguese
Geração de malhas a partir de imagens
Qualidade de malhas
Segmentação de malhas
Triangulação de Delaunay
Abstract in Portuguese
Técnicas para gerar malhas triangulares ou tetraedrais a partir de imagens, ou assumem como entrada uma imagem pré-processada, ou geram uma malha sem distinguir as diferentes estruturas contidas na imagem. O pré-processamento e a ausência de estruturas bem definidas podem apresentar dificuldades na utilização das malhas geradas em algumas aplicações, tais como simulações numéricas. Neste trabalho, apresentamos uma nova técnica que elimina a necessidade do pré-processamento embutindo a segmentação dentro do processo de geração de malha. Além disto, a técnica proposta considera critérios de qualidade nas malhas geradas, mostrando-se apropriada para aplicações de simulação numérica assim como modelagem de imagens com malhas
Title in English
Volumetric mesh generation from images
Keywords in English
Delaunay troangulation
Mesh quality
Mesh segmentation
Volumetric mesh generation from images
Abstract in English
Techniques devoted to generate triangular or tetrahedral meshes from images either take as starting point a pre-processed image or generate a mesh without distinguishing different structures contained in the image. The pre-process and the absence of well defined structures may impose difficulties in using the resulting mesh in some applications as, for example, numerical simulations. In this work, we present a new technique that aims at eliminating the need for pre-processing by building the segmentation into the mesh generation process. Furthermore, the proposed technique consider quality criteria in the generated meshes, being appropriated for applications in numerical simulation as well as in image modeling
 
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tesealex.pdf (33.06 Mbytes)
Publishing Date
2007-06-18
 
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