| 一种新的多尺度非线性阈值斑点噪声抑制方法 |
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| 引用本文： | 郝晓辉,高上凯,高小榕. 一种新的多尺度非线性阈值斑点噪声抑制方法[J]. 信号处理, 1999, 0(1) |
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| 作者姓名： | 郝晓辉 高上凯 高小榕 |
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| 作者单位： | 清华大学电机系 |
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| 摘 要： | 本文针对影响医学超声图象质量的斑点噪声问题，提出了一种基于自适应前处理的多尺度非线性阈值斑点噪声抑制方法。方法的特点是有机地将自适应加权中值滤波和小波分析多尺度非线性阈值两种方法结合在一起．对离体器官超声图象处理的结果表明，这一新方法在有效去除斑点噪声的同时，很好地保留了图象细节。
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| 关 键 词： | 斑点噪声 小波变换 非线性阈值 自适应加权中值滤波 |
A Novel Multiscale Nonlinear Thresholding Method for Ultrasound Speckle Suppressing |
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| Hao Xiaohui,Gao Shangkai,Gao Xiaorong. A Novel Multiscale Nonlinear Thresholding Method for Ultrasound Speckle Suppressing[J]. Signal Processing(China), 1999, 0(1) |
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| Authors: | Hao Xiaohui Gao Shangkai Gao Xiaorong |
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| Affiliation: | Hao Xiaohui;Gao Shangkai;Gao Xiaorong |
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| Abstract: | This paper presents a novel speckle sappression mthod for medical B-Scan ultrasonic images. th mehtod takes the advantages of combining the routineal thresholding technique in multiscale wavelt analysis with pr-processing of th .adaptive filtering. Performance of the new method has ho tested for an in vitro B scan image of a pig hart. The results show that it can effectively reduce the speckle noise while preserving the resolvable details. |
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| Keywords: | Speckl Wavelet transform Nonlinear thresholding Adaptivee filter |
| 本文献已被 CNKI 等数据库收录！ |
