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：2005
卷号：XXXVI-2/W25
出版社：Copernicus Publications
摘要：Based on the analysis of current spherical spatial data structure, the paper discusses the clew of the spherical spatial basal subdivision mode which uses inverse Snyder polyhedron equal area projection on the surfaces of Truncated Icosahedron, and then obtains global multi-resolution overlay by hierarchical subdivision on the initial unfolded projection plane according to the hexagonal grid. The paper also puts forward a essential clew of managing the three leaves nodes and tiles coding based on hexagonal grid, and establish the hexagonal grid expression modes of different spherical entities. Also, on the basis of these clews, we put forward the algorithm of generating the voronoi diagram based on the spherical hexagonal overlay and verified the exactness and efficiency of the algorithm through experiments. By comparing with other similar algorithms, the paper summarized the advantages of the algorithm and gives further research direction at last
关键词：Truncated Icosahedron; Management of Three Leaves Nodes; Hexagonal Grid; Tiles Code; Spherical Dynamic ; Data Model; Voronoi Diagram
