SMART: An Efficient Technique for Massive Terrain Visualization from Out-of-core.
Xiaohong Bao, Renato Pajarola, Michael Shafae · 2004
Real-time visualization of massive terrain elevation models is limited by expensive disk to memory I/O. Furthermore, level-of-detail rendering of such massive terrain models is hindered by complex per-vertex level-of-detail and culling tests. The concept of a per-vertex live range is introduced in this paper. Using this live range, the algorithm reuses per-vertex visibility computation from previously displayed frames efficiently during continuous view-dependent level-of-detail fly-over visualizations. This concept is simple but extremely effective. Experimental results show that more than 90 % of vertex visibility computations and out-ofcore access for those vertices can be avoided.