6 search results - page 1 / 2 » On the Illumination Invariance of the Level Lines under Dire... |
SIAMIS
2011
12 years 7 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...
PAMI
2008
13 years 4 months ago
2008
This paper develops a theory of frequency domain invariants in computer vision. We derive novel identities using spherical harmonics, which are the angular frequency domain analog ...
ICIP
2000
IEEE
14 years 6 months ago
2000
IEEE
This paper introduces a simple criterion to select the most important level lines from the numerous set obtained with a topographic map. A topographic map gives a morphological an...
CVPR
2009
IEEE
14 years 10 months ago
2009
IEEE
Cast shadows induced by moving objects often cause serious problems to many vision applications. We present in this paper an online statistical learning approach to model the backg...
ECCV
2006
Springer
14 years 6 months ago
2006
Springer
Abstract. We develop new mathematical results based on the spherical harmonic convolution framework for reflection from a curved surface. We derive novel identities, which are the ...