Minimum-Maximum Exclusive Interpolation Filter for Image Denoising

Jinsung OH  Younam KIM  

IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences   Vol.E90-A   No.6   pp.1228-1231
Publication Date: 2007/06/01
Online ISSN: 1745-1337
DOI: 10.1093/ietfec/e90-a.6.1228
Print ISSN: 0916-8508
Type of Manuscript: LETTER
Category: Digital Signal Processing
median filter,  nonlinear filter,  impulse noise removal,  

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In this paper, we present a directional interpolation filter in which the minimum and maximum pixels in the given window are excluded. Image pixels within a predefined window are ranked and classified as minimum-maximum or exclusive level, and then passed through the interpolation and identity filters, respectively. Extensive simulations show that the proposed filter performs better than other nonlinear filters in preserving desired image features while reducing impulse noise effectively.