Title :
A processing and scheduling method for vector rendering in global 3D GIS
Author :
Zhang, Xuzhao ; Sui, Zhengwei ; Wu, Lun ; Cai, Heng ; Zhi, Ye ; Qiao, Zhiyuan
Author_Institution :
Sch. of Remote Sensing & Inf. Eng., WuHan Univ. WuHan, Wuhan, China
Abstract :
Aiming at the problem that the efficiency of mass vector data rendering in global 3D GIS is low, this paper put forward a new way of processing and scheduling the data. The problem of crack phenomenon after the compression of public boundary in LOD model of vector data have been solved by the way based on the Douglas-Pecuker algorithm. In addition, we add viewpoint height factor, improving the efficiency of rendering and displaying vector data, which we can get proof in experiments.
Keywords :
cracks; geographic information systems; rendering (computer graphics); Douglas-Pecuker algorithm; LOD model; crack phenomenon; global 3D GIS; mass vector data rendering; public boundary compression; vector data display; Algorithm design and analysis; Approximation algorithms; Data models; Geographic Information Systems; Rendering (computer graphics); Three dimensional displays; Tiles; levels of details; preprocessing; scheduel; the common edges; viewpoint height factor;
Conference_Titel :
Geoinformatics, 2011 19th International Conference on
Conference_Location :
Shanghai
Print_ISBN :
978-1-61284-849-5
DOI :
10.1109/GeoInformatics.2011.5981153
