Representation and visualization of terrain surfaces at variable resolution

被引：72

作者：

Cignoni, P

Puppo, E

Scopigno, R

机构：

[1] CNR, CNUCE, I-56126 PISA, ITALY

[2] CNR, IST ELABORAZ INFORMAZ, I-56126 PISA, ITALY

[3] CNR, IST MATEMAT APPL, I-16149 GENOA, ITALY

来源：

VISUAL COMPUTER | 1997年 / 13卷 / 05期

关键词：

digital terrain modeling; surface simplification; variable resolution representations; terrain visualization;

D O I：

10.1007/s003710050099

中图分类号：

TP31 [计算机软件];

学科分类号：

081202 ; 0835 ;

摘要：

We present a new approach for managing the representation of discrete topographic surfaces at variable resolution. It is based on a unified model encoding a history of either refinement or simplification of a triangulation decomposing a plane domain. An efficient data structure is proposed. It is obtained by interpreting the model containing all triangles of the history as a cell complex embedded in 3D space. A major feature of the model is its ability to provide efficiently a representation of the surface at a resolution variable over the domain according to an application-dependent threshold function. Experimental results on real-world data are presented, and applications to flight simulation are discussed.

引用

页码：199 / 217

页数：19