112 search results - page 11 / 23 » On Sparsity and Overcompleteness in Image Models |
CVPR
2012
IEEE
11 years 11 months ago
2012
IEEE
Active range acquisition systems such as light detection and ranging (LIDAR) and time-of-flight (TOF) cameras achieve high depth resolution but suffer from poor spatial resolutio...
CORR
2010
Springer
13 years 9 months ago
2010
Springer
We consider a class of learning problems that involve a structured sparsityinducing norm defined as the sum of -norms over groups of variables. Whereas a lot of effort has been pu...
ICIP
2005
IEEE
14 years 10 months ago
2005
IEEE
Signal processing using over-complete representations has been an active research field in recent years. In this article, we study the following two related problems: (1) given tw...
ICASSP
2008
IEEE
14 years 3 months ago
2008
IEEE
We present a novel technique for image inpainting, the problem of filling-in missing image parts. Image inpainting is ill-posed and we adopt a probabilistic model-based approach ...
ICIP
2007
IEEE
14 years 10 months ago
2007
IEEE
Finding the sparsest approximation of an image as a sum of basis functions drawn from a redundant dictionary is an NPhard problem. In the case of a dictionary whose elements form ...