CVPR
2007
IEEE
14 years 6 months ago
2007
IEEE
It is well known in the photometric stereo literature that uncalibrated photometric stereo, where light source strength and direction are unknown, can recover the surface geometry...
CVPR
2007
IEEE
14 years 6 months ago
2007
IEEE
A set of images of a Lambertian surface under varying lighting directions defines its shape up to a three-parameter Generalized Bas-Relief (GBR) ambiguity. In this paper, we exami...
CVPR
2005
IEEE
14 years 6 months ago
2005
IEEE
Prior work has argued that when a Lambertian surface in fixed pose is observed in multiple images under varying distant illumination, there is an equivalence class of surfaces giv...