253 search results - page 4 / 51 » Nonlinear image representation using divisive normalization |
ISBI
2008
IEEE
14 years 8 months ago
2008
IEEE
We propose a deconvolution algorithm for images blurred and degraded by a Poisson noise. The algorithm uses a fast proximal backward-forward splitting iteration. This iteration mi...
ICPR
2004
IEEE
14 years 8 months ago
2004
IEEE
This paper deals with the matching of geometric objects including points, curves, surfaces, and subvolumes using implicit object representations in both linear and non-linear sett...
PSIVT
2009
Springer
14 years 2 months ago
2009
Springer
PCA-SIFT is an extension to SIFT which aims to reduce SIFT’s high dimensionality (128 dimensions) by applying PCA to the gradient image patches. However PCA is not a discriminati...
ICIP
2004
IEEE
14 years 9 months ago
2004
IEEE
To be efficient, data protection algorithms should generally exploit the properties of the media information in the transform domain. In this paper, we will advocate the use of no...
ICIP
2002
IEEE
14 years 9 months ago
2002
IEEE
Geometric attacks are among the most challenging problems in present day watermarking. Such attacks are very simple to implement yet they can defeat most of the existing watermark...