| 一种图像去噪的小波相位滤波改进算法 |
| |
| 引用本文： | 张弼弛,何小海. 一种图像去噪的小波相位滤波改进算法[J]. 现代电子技术, 2006, 29(13): 140-142 |
| |
| 作者姓名： | 张弼弛 何小海 |
| |
| 作者单位： | 四川大学,电子信息学院,四川,成都,610065 |
| |
| 摘 要： | 大多数的小波去噪方法都是基于图像小波幅度信息的,但对于低SNR图像来说,其小波域中的图像边缘信息被噪声掩盖,所以有人提出了对幅度不敏感的小波相位滤波算法,利用含噪图像分解后的相位信息来恢复图像,本文对这种算法作出了一些改进。在相位滤波的基础上,考虑Laplace邻域,试验结果表明比原算法效果好。
|
| 关 键 词： | 小波变换 相位 图像处理 小波去噪 |
| 文章编号： | 1004-373X（2006）13-140-03 |
| 收稿时间： | 2006-01-19 |
| 修稿时间： | 2006-01-19 |
A Modified Filtering Algorithm of Wavelet Phase for Image Noise Reduction |
| |
| ZHANG Bichi,HE Xiaohai. A Modified Filtering Algorithm of Wavelet Phase for Image Noise Reduction[J]. Modern Electronic Technique, 2006, 29(13): 140-142 |
| |
| Authors: | ZHANG Bichi HE Xiaohai |
| |
| Affiliation: | College of Electronics and Information Engineering,Sichuan University,Chengdu,610065,China |
| |
| Abstract: | Most of the wavelet denoising methods available are based on magnitudes.However for the images with low SNR,the edges of the image in the wavelet domain are hidden in the noise,a wavelet phase filtering algorithm is presented,which is insensitive to the magnitude of image.The wavelet phase filtering algorithm restore image by phase coefficients.The algorithm is modified in this paper by using considered Laplace neighborhood besides phase informations,and the results prove it. |
| |
| Keywords: | wavelet transform phase image processing wavelet denoising |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
