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http://dx.doi.org/10.5391/JKIIS.2010.20.4.522

Morphology-Based Homomorphic Filter for Contrast Enhancement of Mammographic Images  

Hwang, Hee-Soo (School of Electrical Engineering, Halla University)
Publication Information
Journal of the Korean Institute of Intelligent Systems / v.20, no.4, 2010 , pp. 522-527 More about this Journal
Abstract
In this paper, a new MBHF(Morphology-Based Homomorphic filter) is presented to enhance contrast in mammographic images. The MBH filtering is performed based on the morphological sub-bands, in which an image is morphologically decomposed. The filter is designed to have optimal gain and structuring element in each sub-band through differential evolution. Experimental results show that the proposed method improves the contrast in mammographic images such that an evaluation criterion, WPSNR(Weighted Peak Signal to Noise Ratio) which takes into account human visual system is increased compared with a wavelet-based Homomorphic filter.
Keywords
Morphological filter; homomorphic filter; mammography; contrast enhancement; differential evolution;
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