| 小波变换在消除超声成像噪声中的应用 |
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| 引用本文： | 赵鑫,郭兴明,姚晓帅. 小波变换在消除超声成像噪声中的应用[J]. 医疗卫生装备, 2004, 25(3): 20-22 |
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| 作者姓名： | 赵鑫 郭兴明 姚晓帅 |
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| 作者单位： | 重庆大学生物工程学院生物力学与组织工程教育部重点实验室,重庆市,400044 |
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| 基金项目： | 本课题由重庆大学生物工程学院创新人才培养基金资助. |
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| 摘 要： | 小波分析是目前国际上公认的性能优良的信号时—频分析工具,其多分辨率分析具有良好的空间域和频率域局部化特性,因此很适合于对二维图像信号进行处理。本文针对肝脏超声成像中因相位不同的散射回波相互干涉而产生的斑点噪声,利用小波变换对其进行消噪处理。处理结果显示此方法能达到较好的消噪效果。
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| 关 键 词： | 小波变换 超声成像 斑点噪声 |
| 文章编号： | 1003-8868(2004)03-0020-03 |
| 修稿时间： | 2003-07-16 |
Application of wavelet transform to noise elimination in ultrasonic imaging |
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| ZHAO Xin,GUO Xing-ming,YAO Xiao-shuai. Application of wavelet transform to noise elimination in ultrasonic imaging[J]. Chinese Medical Equipment Journal, 2004, 25(3): 20-22 |
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| Authors: | ZHAO Xin GUO Xing-ming YAO Xiao-shuai |
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| Abstract: | Wavelet transform is internationally recognized a good tool for time-frequency analysis. This paper presents a novel speckle suppression method for medical B-Scan images. The speckle is produced by scattering echoed signals in different phases because of wave interference. The software MATLAB is used as operating platform meanwhile the wavelet is used to eliminate the noise. The ultrasound image is processed by adaptive method and then the selected sym8 wavelet is used in the multiresolution analysis of the ultrasound image. The result shows that this method can effectively reduce the speckle noise. |
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| Keywords: | wavelet-transform ultrasound imaging speckle |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
