Exploiting frame-to-frame coherence for rendering terrain using continuous LOD

Authors:
Jing Zhang;Guojun Chen
Affiliations:
College of Resources Environment and Tourism, The Capital Normal University, Beijing, P.R. China;School of Computer Science and Engineering, Beihang University, Beijing, P.R. China
Venue:
ICAT'06 Proceedings of the 16th international conference on Advances in Artificial Reality and Tele-Existence
Year:
2006

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Abstract

It is the key issue of the terrain real-time rendering to reduce the time-spending for the level-of-detail. The concept of triangle live frame is introduced in this paper. Using this live frame, the algorithm reuses per-vertex visibility computation from previously displayed frames efficiently during continuous view-dependent level-of-detail visualizations. This algorithm decreases to a certain extent computing the distance from the viewpoint to vertex at each frame. Experimental results show that the algorithm reduces the time effectively to produce the LOD terrain.