112 search results - page 1 / 23 » On Sparsity and Overcompleteness in Image Models |
NIPS
2007
13 years 6 months ago
2007
Computational models of visual cortex, and in particular those based on sparse coding, have enjoyed much recent attention. Despite this currency, the question of how sparse or how...
IJON
2002
13 years 4 months ago
2002
A generalized ICA model allowing overcomplete bases and additive noises in the observables is applied to natural image data. It is well known that such a model produces independen...
NECO
2007
13 years 4 months ago
2007
We present a hierarchical architecture and learning algorithm for visual recognition and other visual inference tasks such as imagination, reconstruction of occluded images, and e...
ICIP
2009
IEEE
14 years 5 months ago
2009
IEEE
We propose a new color de-quantizing method for paletted images based on maximizing the sparseness of the overcomplete wavelet analysis of the estimation within the consistency se...
CORR
2008
Springer
13 years 4 months ago
2008
Springer
1 Recently, great attention was intended toward overcomplete dictionaries and the sparse representations they can provide. In a wide variety of signal processing problems, sparsity...