子分元素法:一种体网格压缩算法 |
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引用本文: | 赵建军,钟毅芳. 子分元素法:一种体网格压缩算法[J]. 计算机工程与应用, 2001, 37(15): 28-30,75 |
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作者姓名: | 赵建军 钟毅芳 |
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作者单位: | 华中科技大学CAD中心, |
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基金项目: | 国家自然科学基金重大项目资助(编号:59990470) |
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摘 要: | 提出了一个包含六面体,四面体,金字塔以及三棱柱单元的混合体网格的压缩与解压算法。首先对非四面体单元按照最小节点标号策略进行子分,然后利用修改的增长缝合算法压缩子分后的四面体网格,解压阶段再通过面删除操作来恢复原始网格。压缩后每个四面体约需10bits的存储,初步试验表明,对于通常的六面体网格,能将数据模型压缩至原先的1/4。
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关 键 词: | 网格压缩 编码 四面体网格 六面体网格 |
文章编号: | 1002-8331-(2001)15-0028-03 |
Subdividing Elements Method:An Algorithm of Compressing Hybrid 3D Meshes |
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Abstract: | : This paper presents an algorithm compressing the meshes contain hexahedral,tetrahedral,pyramids,or prisms elements.It first subdivides all non-tetrahedral elements into tetrahedral ones by smallest-node-labels strategy,then compresses the subdivided tetrahedral meshes using modified Szymczak's Grow&Fold algorithm.The decompression algorithm restores the original meshes by kill-faces operations.Our compression algorithm reduces the storage down to 10 bits per tetrahedron,and the testing results show that the compression ratios of 4 to one are achievable for typical hexahedral meshes. |
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Keywords: | : Mesh compression,Coding,Tetrahedral mesh,Hexahedral mesh |
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