Effective techniques for interactive rendering of global terrain surfaces

Author

Zhang, Liqiang ; Yang, Chongjun ; Liu, Suhong ; Ren, Yingchao ; Liu, Donglin ; Rui, Xiaoping

Author_Institution

State Key Lab. of Remote Sensing Sci., Beijing Normal Univ./Chinese Acad. of Sci., China

Volume

2

Issue

2

fYear

2005

fDate

4/1/2005 12:00:00 AM

Firstpage

215

Lastpage

219

Abstract

Global terrain visual systems must support real-time visualization and manipulation of huge multiresolution geographical datasets. In this letter, we focus on certain key techniques, such as construction of three-dimensional (3-D) ellipsoidal models, spatial indexing mechanisms, interactive terrain datasets simplification by the M-band wavelets and triangulation techniques, and surface browsing from different view directions. Finally, an experiment is carried out using different levels of detail data; our results suggest that the methods are effective in enhancing performance of a 3-D global visual system.

Keywords

geophysical signal processing; interactive systems; real-time systems; rendering (computer graphics); terrain mapping; topography (Earth); 3D ellipsoidal models; 3D global visual system; M-band wavelets; ellipsoidal quadtrees; global terrain surfaces; interactive rendering; interactive terrain datasets; multiresolution geographical dataset; real-time visualization; spatial indexing; surface browsing; triangulation techniques; Computer graphics; Data structures; Earth; Indexing; Laboratories; Layout; Remote sensing; Spatial resolution; Visual system; Visualization; Ellipsoidal quadtrees; M-band wavelets; multiresolution; spatial indexing;

fLanguage

English

Journal_Title

Geoscience and Remote Sensing Letters, IEEE

Publisher

ieee

ISSN

1545-598X

Type

jour

DOI

10.1109/LGRS.2005.846013

Filename

1420308