ALGORITHMS FOR TETRAHEDRAL NETWORK(TEN) GENERATION  

作　　者：LI Qingquan LI Deren 

出　　处：《Geo-Spatial Information Science》2000年第1期11-16,共6页地球空间信息科学学报（英文）

基　　金：Project supported by the National Natural Science Foundation of China (No.69833010)

摘　　要：The Tetrahedral Network(TEN) is a powerful 3-D vector structure in GIS, which has a lot of advantages such as simple structure, fast topological relation processing and rapid visualization. The difficulty of TEN application is automatic creating data structure. Although a raster algorithm has been introduced by some authors, the problems in accuracy, memory requirement, speed and integrity are still existent. In this paper, the raster algorithm is completed and a vector algorithm is presented after a 3-D data model and structure of TEN have been introducted. Finally, experiment, conclusion and future work are discussed.The Tetrahedral Netwok(TEN) is a powerful 3-D vector structure in GlS, which has a lot of advantages such as simple structure, fast topological relation processing and rapid visualization. The difficulty of TEN application is automatic creating data structure. Al- though a raster algorithm has been introduced by some authors, the problems in accuracy, memory requirement, speed and integrity are still existent. In this paper, the raster algorithm is completed and a vector algorithm is presented after a 3-D data model and structure of TEN have been introducted. Finally, experiment, conclusion and future work are discussed.

关 键 词：3-D GIS tetrahedral network(TEN) generation algorithm 

分 类 号：P208[天文地球—地图制图学与地理信息工程]