Interactive Visibility Culling for Complex Environments using Occlusion-Switches
https://sgvr.kaist.ac.kr/publication/interactive-visibility-culling-for-complex-environments-using-occlusion-switches/
Naga Govindaraju, Avneesh Sud, Sung-Eui Yoon, and Dinesh Manocha
ACM SIGGRAPH Symposium on Interactive 3D Graphics (I3D), 2003