Wu, Yu-TingYu-TingWuYUNG-YU CHUANG2020-05-042020-05-042012https://scholars.lib.ntu.edu.tw/handle/123456789/490749VisibilityChunk: average directional visibility for importance sampling.conference paper10.1145/2407156.2407205https://doi.org/10.1145/2407156.2407205