Ray Tracing Dynamic Scenes using Selective Restructuring
Sung-Eui Yoon, Sean Curtis, Dinesh Manocha,
Quite interesting dynamic realtime raytracing method is presented by GAMMA group.
They proposed selective reconstruction of pair of BVH nodes for dynamic raytracing.
Spatial structure they are using is BVH, and updating BVH requires only up to ~1% of total rendering time for each frame.
Which pair of BVH nodes is reconstructed is determined by their new cost model(CM-IQ and RM-IQ),
whose calculation is rather complexed.
Anyway, after I read this paper, I think now it should be proven that realtime raytraing with BVH can handle dynamic scene quite efficiently!
(Whereas KD-tree is not yet… I think KD-tree based realtime raytracing will be dead sooner or later).