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论文类型：会议论文

发表时间：2005-05-27

收录刊物：EI、CPCI-S、Scopus

卷号：2

页面范围：930-933

摘要：Ultrasonic images are generally affected by multiplicative shot noise. This paper analyzes and models the coefficients of 2-D multiresolution wavelet decomposition of logarithmically transformed images using alpha stable distribution. We propose a new function that performs a nonlinear operation on the data of classifying the coefficients, thus get a new noise-removal method based on multiresolution wavelet decomposition and alpha stable model.