文章基本信息

标题：Modeling of earth’s gravity fields visualization based on Quad Tree
本地全文：下载
作者：Zhicai Luo ; Zhenhai Li ; Bo Zhong 等
期刊名称：Geo-spatial Information Science
印刷版ISSN：1009-5020
电子版ISSN：1993-5153
出版年度：2010
卷号：13
期号：3
页码：216-220
DOI：10.1007/s11806-010-0327-5
出版社：Taylor and Francis Ltd
摘要：The problems of the earth’s gravity fields’ visualization are both focus and puzzle currently. Aiming at multiresolution rendering, modeling of the Earth’s gravity fields’ data is discussed in the paper by using LOD algorithm based on Quad Tree. First, this paper employed the method of LOD based on Quad Tree to divide up the regional gravity anomaly data, introduced the combined node evaluation system that was composed of viewpoint related and roughness related systems, and then eliminated the T-cracks that appeared among the gravity anomaly data grids with different resolutions. The test results demonstrated that the gravity anomaly data grids’ rendering effects were living, and the computational power was low. Therefore, the proposed algorithm was a suitable method for modeling the gravity anomaly data and has potential applications in visualization of the earth’s gravity fields.
关键词：LOD; Quad Tree; earth’s gravity fields; multiresolution rendering