| 潘 超.节点附着多数据场的四面体网格的简化算法[J].轻工机械,2012,30(4): |
| 节点附着多数据场的四面体网格的简化算法 |
| Vertex Merging Algorithm in Tetrahedral Mesh with Node Attached Multi data Field |
| |
| DOI： |
| 中文关键词: 网格简化 四面体网格 形变参量 标量场参量 矢量场参量 阈值比 节点笼模型 节点兼并 |
| 英文关键词:mesh simplification tetrahedral mesh deformation parameter scalar field parameter vector field parameter threshold ratio adjacent nodes cage model node merging algorithm |
| 基金项目: |
|
| 摘要点击次数: 2502 |
| 全文下载次数: 133 |
| 中文摘要: |
| 为了提高三维数据网格的渲染效率，在综合了国内外学者的四面体网格简化研究成果的基础上，提出基于节点邻接笼模型的节点兼并算法作为网格简化的基本模式，同时解决了算法运行时产生几何错误的问题。文章在网格简化算法中引入统计学的基本方法，将网格的外形信息和标量场、矢量场都处理成数据场，并为各节点数据场定义参量和相应的阈值，通过优化阈值组合来获得保留所需的节点信息的简化结果。最后给出了算法的主要流程。算法实例表明，该算法对网格质量、网格形状的复杂度比较敏感；同时，该算法存在对网格简化路径的依赖；在优化阈值比的条件下可以获得良好的简化效果。 |
| 英文摘要: |
| In order to improve the three dimension data mesh rendering efficiency, comprehended the previous study results at home and abroad, the paper put forwards the node merging algorithm based on adjacent nodes cage model as basic model of mesh simplified. Meanwhile, the geometric error occurred during the algorithm operation was solved. Besides, the paper introduced the statistical methods into the tetrahedral mesh simplification algorithm which dealt with the shape information, data field, the scalar field and vector field as data field. Besides, defined the parameters of each node data field and correspondent threshed value with the help of optimal threshold value combination to obtain retained simplified results of node information required. The paper gives the main flow of the algorithm. The algorithm cases show that the method is rather sensible to the mesh quality and the complexity of the module′s shape. Finally the algorithm method exists the dependence with the simplified path of mesh; and can obtain better simplified effect under the optimal threshold ratio. |
| 查看全文 查看/发表评论 下载PDF阅读器 |
| 关闭 |
