Research Article | OPEN ACCESS
Image Denoising Algorithm Using Second Generation Wavelet Transformation and Principle Component Analysis
Asem Khmag, Abd Rahman Ramli, S.A.R. Al-Haddad, S.J. Hashim and Zarina Mohd Noh
Department of Computer and Communication Systems, Faculty of Engineering, Universiti Putra Malaysia, 43400, Serdang, Malaysia
Research Journal of Applied Sciences, Engineering and Technology 2014 3:367-377
Received: March ‎13, ‎2014 | Accepted: April ‎22, ‎2014 | Published: July 15, 2014
Abstract
This study proposes novel image denoising algorithm using combination method. This method combines both Wavelet Based Denoising (WBD) and Principle Component Analysis (PCA) to increase the superiority of the observed image, subjectively and objectively. We exploit the important property of second generation WBD and PCA to increase the performance of our designed filter. One of the main advantages of the second generation wavelet transformation in noise reduction is its ability to keep the signal energy in small amount of coefficients in the wavelet domain. On the other hand, one of the main features of PCA is that the energy of the signal concentrates on a very few subclasses in PCA domain, while the noise’s energy equally spreads over the entire signal; this characteristic helps us to isolate the noise perfectly. Our algorithm compares favorably against several state-of-the- art filtering systems algorithms, such as Contourlet soft thresholding, Scale mixture by WT, Sparse 3D transformation and Normal shrink. In addition, the combined algorithm achieves very competitive performance compared with the traditional algorithms, especially when it comes to investigating the problem of how to preserve the fine structure of the tested image and in terms of the computational complexity reduction as well.
Keywords:
Cycle spinning , execution time , image quality , PSNR , wavelet based denoised,
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Competing interests
The authors have no competing interests.
Open Access Policy
This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
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The authors have no competing interests.
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