72 search results - page 5 / 15 » Face Recognition Under Variable Lighting using Harmonic Imag... |
PAMI
2002
13 years 6 months ago
2002
We analyze theoretically the subspace best approximating images of a convex Lambertian object taken from the same viewpoint, but under different distant illumination conditions. Si...
ECCV
2006
Springer
13 years 10 months ago
2006
Springer
Many previous works on photometric stereo have shown how to recover the shape and reflectance properties of an object using multiple images taken under a fixed viewpoint and variab...
ICIP
2004
IEEE
14 years 8 months ago
2004
IEEE
For a general purpose face recognition system one of the largest challenge is to separate useful identity related from useless variations in the image data due to nuisance variabl...
CVPR
2005
IEEE
14 years 9 months ago
2005
IEEE
The objective of this work is to recognize all the frontal faces of a character in the closed world of a movie or situation comedy, given a small number of query faces. This is ch...
ICCV
2001
IEEE
14 years 8 months ago
2001
IEEE
We prove that the set of all Lambertian reflectance functions (the mapping from surface normals to intensities) obtained with arbitrary distant light sources lies close to a 9D lin...