54 search results - page 4 / 11 » Flat refractive geometry |
SMA
2006
ACM
14 years 2 months ago
2006
ACM
We present an algorithm to identify the flat and tubular regions of a three dimensional shape from its point sample. We consider the distance function to the input point cloud an...
WSCG
2004
13 years 10 months ago
2004
We describe the geometrical properties of solid's shadows projected onto a flat plane by point-light sources. Even though the shape and position of each element are arbitrary...
CVPR
2008
IEEE
13 years 10 months ago
2008
IEEE
This paper presents a novel integrated background model for video surveillance. Our model uses a primal sketch representation for image appearance and 3D scene geometry to capture...
HAPTICS
2007
IEEE
14 years 11 days ago
2007
IEEE
Tactile displays can provide detailed spatial information to the skin, but little is known about the effects of vibrating displayed shapes. This study examines passive touch perce...
DGCI
2008
Springer
13 years 10 months ago
2008
Springer
Abstract. We present in this paper robust geometric feature estimators on the border of a possibly noisy discrete object. We introduce the notion of patch centered at a point of th...