444 search results - page 9 / 89 » In Search of Illumination Invariants |
SIAMIS
2011
12 years 10 months ago
2011
We analyze the illumination invariance of the level lines of an image. We show that if the scene surface has Lambertian reflectance and the light is directed, then a necessary and...
ICIP
2008
IEEE
14 years 2 months ago
2008
IEEE
This paper introduces a novel approach to the problem of active contour-based segmentation through the use of complexvalued wavelets. In traditional active contour-based segmentat...
ECCV
1998
Springer
14 years 9 months ago
1998
Springer
We describe a new projectively invariant representation of disjoint contour groups which is suitable for shape-based retrieval from an image database. It consists of simultaneous ...
BMVC
2001
13 years 10 months ago
2001
This paper tackles the problem of robust change detection in image sequences from static cameras. Motion cues are detected using frame differencing with an adaptive background est...
ICCV
2007
IEEE
14 years 9 months ago
2007
IEEE
We present an approach for illumination and affineinvariant point matching using ordinal features. Ordinal measures for matching only consider the order between pixels and not the...