A Non-Local Algorithm for Image Denoising
CVPR '05 Proceedings of the 2005 IEEE Computer Society Conference on Computer Vision and Pattern Recognition (CVPR'05) - Volume 2 - Volume 02
Image denoising with anisotropic bivariate shrinkage
Signal Processing
De-noising by soft-thresholding
IEEE Transactions on Information Theory
Adaptive wavelet thresholding for image denoising and compression
IEEE Transactions on Image Processing
Image denoising using scale mixtures of Gaussians in the wavelet domain
IEEE Transactions on Image Processing
The contourlet transform: an efficient directional multiresolution image representation
IEEE Transactions on Image Processing
Directional multiscale modeling of images using the contourlet transform
IEEE Transactions on Image Processing
The Nonsubsampled Contourlet Transform: Theory, Design, and Applications
IEEE Transactions on Image Processing
Image Denoising by Sparse 3-D Transform-Domain Collaborative Filtering
IEEE Transactions on Image Processing
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In this paper, a more stable solving method of anisotropic bivariate Laplacian distribution function and corresponding threshold function is derived from the model using Bayesian estimation theory and extended to the non subsampled contourlet(NSCT) domain. A novel Non-Subsampled Contourlet Transform based on anisotropic bivariate threshold function (ABNSCT) for image denoising has been proposed. Such algorithms use anisotropic property of the variances of NSCT coefficients in different scales of natural images and a maximum a posteriori (MAP) relies on the conjecture that the NSCT coefficients and parameters locally vary with local marginal variance estimation. The simulation results indicate that the proposed method can remove Gaussian white noise effectively over a wide range of noise variance, improve the peak signal-to-noise ratio of the image, and keep better visual result in edges information reservation as well.