9 search results - page 1 / 2 » Accuracy of Spherical Harmonic Approximations for Images of ... |
ECCV
2004
Springer
14 years 6 months ago
2004
Springer
Various problems in Computer Vision become difficult due to a strong influence of lighting on the images of an object. Recent work showed analytically that the set of all images of...
PAMI
2006
13 years 4 months ago
2006
In this paper, we propose two novel methods for face recognition under arbitrary unknown lighting by using spherical harmonics illumination representation, which require only one t...
ICCV
2001
IEEE
14 years 6 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...
PAMI
2002
13 years 4 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
2004
Springer
13 years 9 months ago
2004
Springer
Abstract. We propose a new method for face recognition under arbitrary pose and illumination conditions, which requires only one training image per subject. Furthermore, no limitat...