277 search results - page 20 / 56 » Illumination Distribution from Shadows |
ICCV
1998
IEEE
15 years 1 months ago
1998
IEEE
A simple and inexpensive approach for extracting the threedimensional shape of objects is presented. It is based on `weak structured lighting'; it di ers from other conventio...
CAIP
2003
Springer
15 years 2 months ago
2003
Springer
Video surveillance systems seek to automatically identify events of interest in a variety of situations. Extracting a moving object from background is the most important step of t...
ICIP
2005
IEEE
15 years 11 months ago
2005
IEEE
Knowing which edges in an image denote shadow edges and which are due to object boundaries or changes in surface reflectance has important applications in both computer vision and...
TOG
2008
14 years 9 months ago
2008
We describe a unified representation of occluders in light transport and photography using shield fields: the 4D attenuation function which acts on any light field incident on an ...
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CVPR
2012
IEEE
13 years 2 days ago
2012
IEEE
We identify and study two types of “accidental” images that can be formed in scenes. The first is an accidental pinhole camera image. These images are often mistaken for shad...