72 search results - page 2 / 15 » Camera Calibration and Light Source Estimation from Images w... |
ICRA
2007
IEEE
13 years 11 months ago
2007
IEEE
— In this paper, we propose an original approach to control camera position and/or lighting conditions in an environment using image gradient information. Our goal is to ensure a...
CVPR
2010
IEEE
14 years 1 months ago
2010
IEEE
We explore the use of clouds as a form of structured lighting to capture the 3D structure of outdoor scenes observed over time from a static camera. We derive two cues that relate ...
ICCV
2005
IEEE
14 years 7 months ago
2005
IEEE
This paper addresses the problem of shadow extraction from a single image of a complex natural scene. No simplifying assumption on the camera and the light source other than the L...
ICPR
2006
IEEE
14 years 6 months ago
2006
IEEE
We introduce an efficient method for recovering the camera parameters automatically from the cast shadows of two 3D points observed over time. Compared to previous related work, o...
ICPR
2008
IEEE
14 years 6 months ago
2008
IEEE
We present a novel application where, using only three points from the shadow trajectory of an object, one can accurately determine the geo-location of the camera, up to a longitu...