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A Study on the Image Enhancement Method of Digital Mammogram in the Wavelet Domain  

Jeon, Geum-Sang (금오공과대학)
Jang, Boo-Hwan (금오공과대학)
Kim, Sang-Hee (금오공과대학)
Publication Information
Journal of the Institute of Convergence Signal Processing / v.13, no.1, 2012 , pp. 6-11 More about this Journal
Abstract
Digital mammogram is effective for detecting the micro-calcification that is early symptom of breast cancer. In the digital mammogram, many image processing techniques have been studied for accurate diagnosis and efficient treatment of micro-calcification lesion. The wavelet based multi-scale method was mainly used to enhance the image contrast. This paper presents an advanced mammography enhancement method which is based both on the brightness and the contrast enhancement in the wavelet domain. The proposed method normalizes a dynamic range using histogram of the image. The brightness is enhanced by modifying coefficients of low frequency components, and the contrast is enhanced by coefficients of high frequency component based on the multi-scale contrast measure. The experiment results show that the proposed method yields better performance of the image enhancement over the existing methods.
Keywords
Mammograms; Medical Image Processing; Wavelet Transform; Contrast Measure; Brightness;
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