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Removal of Impulse Noise using Iterative Unsymmetrical Trimmed Median Filter

International Journal of Computer Applications
© 2014 by IJCA Journal
Volume 89 - Number 12
Year of Publication: 2014
Glincy Mary Jacob
Tony Sam Thomas
Rahna K. M

Glincy Mary Jacob, Tony Sam Thomas and Rahna K.m. Article: Removal of Impulse Noise using Iterative Unsymmetrical Trimmed Median Filter. International Journal of Computer Applications 89(12):43-48, March 2014. Full text available. BibTeX

	author = {Glincy Mary Jacob and Tony Sam Thomas and Rahna K.m},
	title = {Article: Removal of Impulse Noise using Iterative Unsymmetrical Trimmed Median Filter},
	journal = {International Journal of Computer Applications},
	year = {2014},
	volume = {89},
	number = {12},
	pages = {43-48},
	month = {March},
	note = {Full text available}


It is universally accepted that Median filter is the best filter known so far. Based on this fact many variants of median filter were developed to improve the performance of the standard median filter. In this paper a new approach for the restoration of gray scale and color images that are highly corrupted by impulse noise is proposed. The algorithm works on low density noise also. The algorithm has three stages – firstly, finding the corrupted pixels, secondly de-noising the corrupted pixels; thirdly, minimizing the de-noised image to root image. The article proves that the new approach is guaranteed to converge to root image within a finite number of iterations. The proposed algorithm shows better results than the Standard Median Filter, Recursive Median Filter and Decision based Unsymmetrical Trimmed Median Filter.


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