GPU-assisted computation of centroidal Voronoi tessellation.
IEEE Trans Vis Comput Graph
; 17(3): 345-56, 2011 Mar.
Article
em En
| MEDLINE
| ID: mdl-21233516
ABSTRACT
Centroidal Voronoi tessellations (CVT) are widely used in computational science and engineering. The most commonly used method is Lloyd's method, and recently the L-BFGS method is shown to be faster than Lloyd's method for computing the CVT. However, these methods run on the CPU and are still too slow for many practical applications. We present techniques to implement these methods on the GPU for computing the CVT on 2D planes and on surfaces, and demonstrate significant speedup of these GPU-based methods over their CPU counterparts. For CVT computation on a surface, we use a geometry image stored in the GPU to represent the surface for computing the Voronoi diagram on it. In our implementation a new technique is proposed for parallel regional reduction on the GPU for evaluating integrals over Voronoi cells.
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Algoritmos
/
Gráficos por Computador
/
Processamento de Imagem Assistida por Computador
Idioma:
En
Revista:
IEEE Trans Vis Comput Graph
Assunto da revista:
INFORMATICA MEDICA
Ano de publicação:
2011
Tipo de documento:
Article
País de afiliação:
Estados Unidos