| 基于双正交小波和边缘加权的图像去噪算法 |
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| 引用本文： | 冯伟,陈健.基于双正交小波和边缘加权的图像去噪算法[J].通信技术,2008,41(5):145-148. |
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| 作者姓名： | 冯伟 陈健 |
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| 作者单位： | 上海交通大学,信号处理研究所,上海,200030 |
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| 摘 要： | 文中针对现有去噪算法存在的问题,提出了一种基于双正交小波和边缘加权的新的图像去噪算法.该算法对图像进行基于图像移位相关性的自适应二叉分解,研究了白高斯噪声在双正交小波分解下的功率谱,并结合图像的边缘信息,对不同区域的去噪阈值以不同权重加权.实验结果表明,文中算法去噪所得图像的MSE优于小波变换全局阈值去噪,视觉效果明显优于维纳滤波去噪.
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| 关 键 词： | 图像去噪 边缘检测 双正交小波 小波变换 双正交小波 边缘加权 图像去噪算法 Edge Detection Biorthogonal Wavelet Based Denoising 滤波去噪 维纳 视觉效果 阈值去噪 小波变换 结果 实验 权重 去噪阈值 区域 边缘信息 结合 功率谱 |
| 文章编号： | 1002-0802(2008)05-0145-04 |
| 修稿时间： | 2007年2月2日 |
Image Denoising Based on Biorthogonal Wavelet and Edge Detection |
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| FENG Wei,CHEN Jian.Image Denoising Based on Biorthogonal Wavelet and Edge Detection[J].Communications Technology,2008,41(5):145-148. |
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| Authors: | FENG Wei CHEN Jian |
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| Affiliation: | FENG Wei,CHEN Jian (Shanghai Jiaotong University,Shanghai 200030,China) |
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| Abstract: | To eliminate some defects of temporary image denoising algorithms, an image denoising algorithm based on biorthogonal wavelet and edge detection is developed. The algorithm takes advantage of the shift correlation of image and subbands to perform adaptive binary-tree decomposition of images. This paper analyzes the PSD (Power Spectrum Density) model of the Additive White Gaussian Noise (AWGN) in subbands under biorthogonal wavelet decomposition, and the edge of image is utilized to weigh different coefficie... |
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| Keywords: | image denoising edge detection biorthogonal wavelet wavelet transform |
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