Optimal Nonlocal means algorithm for denoising ultrasound image

Abstract

We propose a new measure for denoising image by calculating mean distance of all pixels in an image in non-local means (NL-means) algorithm. We compute and analyze the original NL-means algorithm which total all the distance of the patches but, our proposed algorithm calculates the mean value of all distance of all the patches and then than get the sum of all distance. Our proposed algorithm exhibit better result with comparison of the existing NL-means algorithm.

Keywords: NL-means, Patches, Mean Value, Measurement Matrix.