FILTERING OF MEDICAL ULTRASONIC IMAGES BASED ON A MODIFIED ANISTROPIC DIFFUSION EQUATION

查看全文 作　　者：Wang [1]Ling;Li [1]Deyu;Wang [1]Tianfu;Lin [1]Jiangli;Peng [1]Yun;Rao [2]Li;Zheng [3]Yi

机构地区：[1]Biomedical Engineering Center, 373#, Sichuan University, Chengdu 610065, China;[2]Cardiac Medicine of Huazi Hospital, Sichuan University, Chengdu 610041, China;[3]Department of Electrical and Computer Engineering, St. Cloud State University, MN56301, USA

出　　处：《Journal of Electronics(China)》索引2007年第24卷第2期,共5页

基　　金：Supported by National Natural Science Foundation of China (No.60272060);Doctoral Foundation of Ministry of Education (No.20030610032);Sichuan Youth Science and Technology Foundation (No.04ZQ026-013). 摘　　要：Speckle noise reduction is a key problem of the image analysis of medical UltraSound images. In this paper, two important improvements have been developed to a fast anisotropic diffusion algorithm for speckle noise reduction. The Gaussian filter is firstly used before gradient calculation, and then the adaptive algorithm of the factor k is proposed. Numerous experimental results show that the proposed model is superior to other methods in noise removal, fidelity and edge preservation. It is suitable for the preprocessing of a great number of medical UltraSound images, such as three dimen- sional reconstruction. 关键词：医学超声图象滤波各向异性扩散算法扩散方程

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FILTERING OF MEDICAL ULTRASONIC IMAGES BASED ON A MODIFIED ANISTROPIC DIFFUSION EQUATION

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