A MULTI-THREAD BASED TERRAIN VISUALIZATION ALGORITHM

摘要

Terrain visualization often needs to render very large datasets that are too big to fit into the main memory, thus presenting the problem of out-of-core terrain visualization. An effective strategy for out-of-core visualization is on-demand data loading, which involves dividing the dataset into small manageable patches that are paged in/out as needed. In this paper, we present an efficient multi-thread based asynchronous terrain visualization algorithm. The design focuses on the effective management of paging request queues and thread synchronization. The algorithm is particularly suitable for multiple-viewer based terrain visualization.