| 一种基于各向异性扩散方程的医学超声图像降噪方法 |
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| 引用本文： | 刘芬,孙丰荣,耿俊卿,秦晓红,姚桂华,张运. 一种基于各向异性扩散方程的医学超声图像降噪方法[J]. 山东大学学报(工学版), 2009, 39(5): 38-42 |
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| 作者姓名： | 刘芬 孙丰荣 耿俊卿 秦晓红 姚桂华 张运 |
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| 作者单位： | 刘芬，孙丰荣，耿俊卿，秦晓红：山东大学信息科学与工程学院, 山东 济南 250100; 姚桂华，张运：山东大学齐鲁医院心内科,山东 济南 250012 |
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| 基金项目： | 国家自然科学基金资助项目(60571040);;山东省优秀中青年科学家奖励基金资助项目(2005BS1006) |
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| 摘 要： | 斑点噪声是超声成像机制引起的固有噪声形态,它给超声图像的特征提取、识别和分析造成了困难.基于各向异性扩散方程的滤波技术能够有效地抑制斑点噪声，提出了一种基于各向异性扩散方程的医学超声图像降噪方法，该方法改进了林石算子,设置了扩散门限,并将各向异性扩散方程的常规扩散方向扩展为8方向.仿真医学超声图像降噪实验表明了该方法的滤波和保边性能都明显优于经典的PM方程和林石算子，而该方法在实际医学超声图像降噪上的成功应用表明了其临床应用价值.
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| 关 键 词： | 医学超声图像 斑点噪声 各向异性扩散, |
| 收稿时间： | 2008-12-30 |
A medical ultrasound image filtering method based on the anisotropic diffusion equation |
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| LIU Fen,SUN Feng-rong,GENG Jun-qing,QIN Xiao-hong,YAO Gui-hua,ZHANG Yun. A medical ultrasound image filtering method based on the anisotropic diffusion equation[J]. Journal of Shandong University of Technology, 2009, 39(5): 38-42 |
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| Authors: | LIU Fen SUN Feng-rong GENG Jun-qing QIN Xiao-hong YAO Gui-hua ZHANG Yun |
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| Affiliation: | 1. School of Information Science and Engineering of Shandong University;Jinan 250100;China;2. Cardiology Department of Qilu Hospital of Shandong University;Jinan 250012;China |
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| Abstract: | Speckle noise is one of the inherent noise patterns evoked by the mechanism of ultrasound imaging,which brings great difficulties to feature extraction,recognition and analysis. Techniques based on the anisotropic diffusion equation can effectively suppress the speckle noise. An algorithm using the anisotropic diffusion equation was proposed to suppress the speckle noise of a medical ultrasound image. This method improves LinShi operator and enhances the conventional method by setting the threshold value an... |
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| Keywords: | medical ultrasound image speckle noise anisotropic diffusion |
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