Paper Title:A New Statistical Approach for Elimination of Dissimilar Patches in Nonlocal Means Image Denoising

Abstract

Nonlocal means is one of the well-known image denoising technique. In this nonlocal means technique to denoise the center patch by using weighted version of all patches in search neighbourhood.Some dissimilar patches also include in this search neighbourhood.We propose hard thresholding algorithm based on distribution of distances of similar patches. We use hard thresholding algorithm that eliminates those dissimilar patches. The method denoted by Elimination of Dissimilar Patches in Nonlocal Means (NLM-EDP).This NLM-EDP method improve PSNR and SSIM of the retrieved image in comparison with nonlocal means.


Keywords:Image denoising, hard thresholding, nonlocal means