7413 search results - page 62 / 1483 » Using Specularities for Recognition |
CGF
1998
13 years 10 months ago
1998
We introduce a new data structure in the form of a light hierarchy for efficiently ray-tracing scenes with many light sources. An octree is constructed with the point light sourc...
PAMI
2007
13 years 9 months ago
2007
—Imaging of objects under variable lighting directions is an important and frequent practice in computer vision, machine vision, and image-based rendering. Methods for such imagi...
ICB
2009
Springer
14 years 4 months ago
2009
Springer
Biometric authentication using mobile devices is becoming a convenient and important means to secure access to remote services such as telebanking and electronic transactions. Such...
CVPR
2007
IEEE
15 years 5 days ago
2007
IEEE
Most of the shape from shading (SFS) algorithms have been developed under the simplifying assumptions of a Lambertian surface, an orthographic projection, and a distant light sour...
CVPR
2007
IEEE
15 years 5 days 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...