球面四元三角网的复杂拓扑关系计算
Computing of Complicated Topological Relation in Spherical Surface Quaternary Triangular Mesh
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摘要: 针对已有球面四元三角网拓扑关系计算方法不能处理带空洞复杂目标的情况,提出了基于公共三角格网来计算球面四元三角网复杂拓扑关系,该方法能准确判断出带空洞复杂目标的拓扑关系,为全球空间分析和应用提供了新的思路。Abstract: Spherical surface QTM(quaternary triangular mesh) is one of an efficient tool to deal with the global data because of its advantages of multi-resolution and hierarchy.In order to compute topological relation between complicated object with holes,the new method with the base triangle mesh will be discussed in this paper.This method can exactly compute the topological relation of the complicated target with holes,which provide a new thought in global spatial analysis and application.