217 search results - page 15 / 44 » Lights from Highlights and Shadows |
ECCV
2002
Springer
14 years 9 months ago
2002
Springer
Illumination conditions cause problems for many computer vision algorithms. Inparticular, shadows in an image can cause segmentation, tracking, or recognition algorithms to fail. I...
CVPR
2003
IEEE
14 years 9 months ago
2003
IEEE
Cast shadows produce troublesome effects for video surveillance systems, typically for object tracking from a fixed viewpoint, since it yields appearance variations of objects dep...
TOG
2008
13 years 7 months ago
2008
We present a novel shadow map parameterization to reduce perspective aliasing artifacts for both point and directional light sources. We derive the aliasing error equations for bo...
CGF
2008
13 years 7 months ago
2008
We present a new and accurate method to render the atmosphere in real time from any viewpoint from ground level to outer space, while taking Rayleigh and Mie multiple scattering i...
CVPR
1999
IEEE
14 years 9 months ago
1999
IEEE
This paper describes a system that uses a camera and a point light source to track a user's hand in three dimensions. Using depth cues obtained from projections of the hand a...