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A Hybrid Image Denoising Method

by Hari Om, Mantosh Biswas
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International Journal of Computer Applications
Foundation of Computer Science (FCS), NY, USA
Volume 58 - Number 3
Year of Publication: 2012
Authors: Hari Om, Mantosh Biswas
10.5120/9262-3439

Hari Om, Mantosh Biswas . A Hybrid Image Denoising Method. International Journal of Computer Applications. 58, 3 ( November 2012), 21-26. DOI=10.5120/9262-3439

@article{ 10.5120/9262-3439,
author = { Hari Om, Mantosh Biswas },
title = { A Hybrid Image Denoising Method },
journal = { International Journal of Computer Applications },
issue_date = { November 2012 },
volume = { 58 },
number = { 3 },
month = { November },
year = { 2012 },
issn = { 0975-8887 },
pages = { 21-26 },
numpages = {9},
url = { https://ijcaonline.org/archives/volume58/number3/9262-3439/ },
doi = { 10.5120/9262-3439 },
publisher = {Foundation of Computer Science (FCS), NY, USA},
address = {New York, USA}
}
%0 Journal Article
%1 2024-02-06T21:03:20.989272+05:30
%A Hari Om
%A Mantosh Biswas
%T A Hybrid Image Denoising Method
%J International Journal of Computer Applications
%@ 0975-8887
%V 58
%N 3
%P 21-26
%D 2012
%I Foundation of Computer Science (FCS), NY, USA
Abstract

In this paper, a hybrid image denoising method that is based on locally adaptive window-based maximum likelihood (LAWML) and NeighShrink. The LAWML is doubly stochastic process models which denoise an image by exploiting the dependency of local wavelet coefficients within each scale. The LAWML needs a global optimal neighboring window. The NeighShrink thresholding scheme uses the immediate neighboring coefficients based on block thresholding. It uses a suboptimal universal threshold and identical neighbouring window size in all wavelet subbands. The NeighShrink and LAWML always produce an over-smoothed image like the Weiner filter in which many of the detail coefficients are lost during threshold evaluation. This proposed method overcomes these disadvantages and, as a result, it provides significant improvement in visual quality i. e. Peak-to-Signal Noise Ratio (PSNR) of a noisy image.

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Index Terms

Computer Science
Information Sciences

Keywords

Image Denoising Thresholding LAWML NeighShrink Peak-to-Signal Noise Ratio (PSNR)

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