We propose a new sampling-and-recovery scheme to accelerate the gathering of representative VPLs. Our basic idea is to take the advantage of the low-rank property of the lighting matrix so that we only accurately compute some entries of matrix and then numerically recover other entries.

Yuchi Huo, State Key Lab of CAD&CG, Zhejiang University
Rui Wang, State Key Lab of CAD&CG, Zhejiang University
Shihao Jin, State Key Lab of CAD&CG, Zhejiang University
Xinguo Liu, State Key Lab of CAD&CG, Zhejiang University
Hujun Bao, State Key Lab of CAD&CG, Zhejiang University