64 search results - page 4 / 13 » Exploiting Image Collections for Recovering Photometric Prop... |
PAMI
2007
13 years 5 months ago
2007
Traditional photometric stereo algorithms employ a Lambertian reflectance model with a varying albedo field and involve the appearance of only one object. In this paper, we gene...
ICCV
2003
IEEE
14 years 8 months ago
2003
IEEE
Under the Lambertian reflectance model, uncalibrated photometric stereo with unknown light sources is inherently ambiguous. In this paper, we consider the use of a more general re...
ICCV
2003
IEEE
14 years 8 months ago
2003
IEEE
We derive a new class of photometric invariants that can be used for a variety of vision tasks including lighting invariant material segmentation, change detection and tracking, a...
SIBGRAPI
2008
IEEE
14 years 18 days ago
2008
IEEE
We describe a procedure to solve the basic problem of Variable Lighting Photometric Stereo – namely, recovering the normal directions and intrinsic albedos at all visible points...
ICCV
1998
IEEE
14 years 8 months ago
1998
IEEE
Image "appearance" may change over time due to a variety of causes such as 1) object or camera motion; 2) generic photometric events including variations in illumination...