251 search results - page 13 / 51 » Variance shadow maps |
CVPR
2010
IEEE
14 years 3 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 ...
ACCV
2007
Springer
14 years 1 months ago
2007
Springer
We present a simple and practical approach for segmenting un-occluded items in a scene by actively casting shadows. By ’items’, we refer to objects (or part of objects) enclose...
ECCV
2004
Springer
14 years 23 days ago
2004
Springer
—Cast shadows can be significant in many computer vision applications, such as lighting-insensitive recognition and surface reconstruction. Nevertheless, most algorithms neglect ...
CVPR
2010
IEEE
13 years 11 months ago
2010
IEEE
In this paper we derive formal constraints relating terrain elevation and observed cast shadows. We show how an optimisation framework can be used to refine surface estimates usin...
GLOBECOM
2007
IEEE
14 years 1 months ago
2007
IEEE
Abstract— For MIMO broadcast systems the effects of shadowing on the channel capacity and the fairness of the system in sharing the resources amongst multiple users are important...