Feature-Based Visibility-Driven CLOD for Terrain
PG '03 Proceedings of the 11th Pacific Conference on Computer Graphics and Applications
Formalizing visibility characteristics in hierarchical systems
Data & Knowledge Engineering
Fast and reliable mouse picking using graphics hardware
International Journal of Computer Games Technology - Special issue on cyber games and interactive entertainment
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Abstract: We present a series of simple improvements that make use of temporal and spatial coherence in the scope of hierarchical visibility algorithms. The hierarchy updating avoids visibility tests of certain interior nodes of the hierarchy. The visibility propagation algorithm reuses information about visibility of neighbouring spatial regions. Finally, the conservative hierarchy updating avoids visibility tests of the hierarchy nodes that are expected to remain visible. We evaluate the presented methods in the context of hierarchical visibility culling using occlusion trees.