期刊名称：ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences
印刷版ISSN：2194-9042
电子版ISSN：2194-9050
出版年度：2008
卷号：XXXVII Part B2
页码：931-936
出版社：Copernicus Publications
摘要：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. Based on characters of spherical surface QTM, set muti-operators and Euler_number of symmetric difference will be presented to describing and computing model of the topological relation in spherical surface QTM. In this model, the topological invariant (empty or not empty) of the result of the intersection, difference, difference by and symmetric difference between two spatial objects are used to partially distinguish their five traditional topological relation, and then the Euler number of the result of symmetric difference between two spatial objects is introduced to confirm the other three topological relations of disconnected / disjoin, contain / overlap, and contained by / overlaped by which the traditional methods can't distinguish
