Abhijeet Ghosh Shruthi Achutha Wolfgang Heidrich Matthew O'Toole BRDF Acquisition with Basis Illumination. 1-8 2007 ICCV http://dx.doi.org/10.1109/ICCV.2007.4408935 conf/iccv/2007 db/conf/iccv/iccv2007.html#GhoshAHO07