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SIAMIS
2010
155views more  SIAMIS 2010»
13 years 2 months ago
Smoothing Nonlinear Conjugate Gradient Method for Image Restoration Using Nonsmooth Nonconvex Minimization
Image restoration problems are often converted into large-scale, nonsmooth and nonconvex optimization problems. Most existing minimization methods are not efficient for solving su...
Xiaojun Chen, Weijun Zhou
JSCIC
2007
165views more  JSCIC 2007»
13 years 7 months ago
A Nonlinear Multigrid Method for Total Variation Minimization from Image Restoration
Image restoration has been an active research topic and variational formulations are particularly effective in high quality recovery. Although there exist many modelling and theore...
Ke Chen 0002, Xue-Cheng Tai
ICMCS
2006
IEEE
116views Multimedia» more  ICMCS 2006»
14 years 1 months ago
Robust Watermarking in the Wigner Domain
In this paper, a new watermarking scheme in the joint timefrequency domain is introduced. Wigner distribution is used to transform an image into the spatial-spectral domain. The p...
Mahmood Al-khassaweneh, Selin Aviyente
MVA
2007
155views Computer Vision» more  MVA 2007»
13 years 9 months ago
Pre-processing Algorithms on Digital Mammograms
Mammography is the best method for early mass detection. In order to limit the search for abnormalities by Computer Aided Diagnosis systems to the region of the breast without und...
Hengameh Mirzaalian, Mohammad Reza Ahmadzadeh, Sae...
NIPS
2004
13 years 9 months ago
Hierarchical Clustering of a Mixture Model
In this paper we propose an efficient algorithm for reducing a large mixture of Gaussians into a smaller mixture while still preserving the component structure of the original mod...
Jacob Goldberger, Sam T. Roweis