期刊
VISUAL COMPUTER
卷 25, 期 3, 页码 279-288出版社
SPRINGER
DOI: 10.1007/s00371-008-0267-3
关键词
Convolution surfaces; Implicit surfaces; Ray tracing
资金
- Natural Science Foundation of Zhejiang Province [R105431]
- National Natural Science Foundation of China [60573153]
- China 863 Program [2006AA01Z314]
- Research Grant Council of the Hong Kong Special Administrative Region, China [HKUST6295/04E]
We present a novel method for creating implicit surfaces from polygonal models. The implicit function is defined by convolving a kernel with the triangles in the polygonal model. By adopting a piecewise quartic polynomial kernel function with a finite support, we derive a convolution model that has a closed-form solution, and thus can be efficiently evaluated. The user only needs to specify an effective radius of influence to generate an implicit surface of desired closeness to the polygonal model. The resulting implicit surface is fast to evaluate, not requiring accumulating evaluation results using any hierarchical data structure, and can be efficiently ray-traced to reveal the detailed features.
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