| 基于最优匹配小波的回波与图像消噪 |
| |
| 引用本文： | 丁爱玲,石光明,郑春红,焦李成.基于最优匹配小波的回波与图像消噪[J].长安大学学报(自然科学版),2006,26(4):103-107. |
| |
| 作者姓名： | 丁爱玲 石光明 郑春红 焦李成 |
| |
| 作者单位： | [1]西安电子科技大学电子工程学院,陕西西安710071 [2]长安大学信息工程学院,陕西西安710064 |
| |
| 基金项目： | 中国科学院资助项目;陕西省自然科学基金 |
| |
| 摘 要： | 研究了用于消噪的小波与信号、图像的匹配原则，在采用时域波形逼近与频谱匹配原则的基础上，提出了最优匹配小波的设计方法。首先构造了两种小波滤波器组，其次给出了最佳匹配小波的设计优化算法，最后分别探讨了应用最优匹配小波对超声回波和图像消噪的方法。仿真结果表明，该方法性能优于常规的小波消噪，能较明显提高信号与图像的信噪比。
|
| 关 键 词： | 信息工程 信号图像 小波构造 匹配小波 消噪 超声回波 |
| 文章编号： | 1671-8879（2006）04-0103-05 |
| 收稿时间： | 2005-05-18 |
| 修稿时间： | 2005年5月18日 |
Denoising for ultrasound echo and image based on optimal match wavelet |
| |
| DING Ai-ling , SHI Guang-ming , ZHENG Chun-hong , JIAO Li-cheng.Denoising for ultrasound echo and image based on optimal match wavelet[J].JOurnal of Chang’an University:Natural Science Edition,2006,26(4):103-107. |
| |
| Authors: | DING Ai-ling SHI Guang-ming ZHENG Chun-hong JIAO Li-cheng |
| |
| Abstract: | The choices of wavelet bases and threshold are two key problems in using wavelet transform to process signal and image. Aimed at the first problem, an algorithm for designing optimal match wavelet is proposed. Two kinds of wavelet filter banks based on this algorithm are constructed. The optimal algorithm of the match wavelet is presented. Criterions of wavelet matching signal or image are also put forward. It is shown that the construction of match wavelet is equivalent to the optimal design of perfect reconstruction filter banks which match the signal or image. The method of denoising is studied with optimized match wavelet transform for ultrasonic echo and image. The simulation results show that this method is suprior to normal wavelet method, it can increase the ratio of signal and noise. 2 tabs, 8 figs, 6 refs. |
| |
| Keywords: | information engineering signal image constructing wavelet match wavelet denoising ultrasound echo |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
