| 频域约束的红-黑小波变换图像复原算法 |
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| 引用本文： | 许廷发,祁金刚,周生兵,倪国强,姚剑敏.频域约束的红-黑小波变换图像复原算法[J].北京理工大学学报,2007,27(5):446-450. |
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| 作者姓名： | 许廷发 祁金刚 周生兵 倪国强 姚剑敏 |
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| 作者单位： | 1. 北京理工大学,信息科学技术学院光电工程系,北京,100081
2. 长春师范学院,吉林,长春,130032 |
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| 基金项目： | 国家高技术研究发展计划(863计划)
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国家自然科学基金 |
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| 摘 要： | 提出一种频域约束的红-黑小波变换图像复原新算法.该算法引入频域约束因子,对不同频率的部分系数给予不同程度的约束,保证了对有色噪声的压制效果,保留了图像细节信息.利用频域约束的红-黑小波变换提取图像信息,消除了有色噪声和振铃效应,实现了降质图像复原.运用含噪退化的图像进行了实验.结果表明,该方法与维纳滤波、等功率谱方法相比,信噪比RSN及信噪比提高R′SN两个参数均提高了3倍.
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| 关 键 词： | 图像复原 频域约束 红-黑小波变换 频域约束 小波变换 图像复原 算法 Image Restoration Wavelet Transform Restricted 两个参数 信噪比 功率谱方法 维纳滤波 结果 实验 退化 运用 振铃效应 图像信息 提取 利用 细节信息 |
| 文章编号： | 1001-0645(2007)05-0446-05 |
| 收稿时间： | 9/7/2006 12:00:00 AM |
| 修稿时间： | 09 7 2006 12:00AM |
Frequency Restricted Red-Black Wavelet Transform for Image Restoration |
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| XU Ting-f,QI Jin-gang,ZHOU Sheng-bing,NI Guo-qiang and YAO Jian-min.Frequency Restricted Red-Black Wavelet Transform for Image Restoration[J].Journal of Beijing Institute of Technology(Natural Science Edition),2007,27(5):446-450. |
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| Authors: | XU Ting-f QI Jin-gang ZHOU Sheng-bing NI Guo-qiang and YAO Jian-min |
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| Institution: | 1. Department of Optical Engineering, School of Information Science and Technology, Beijing Institute of Technology, Beijing 100081, China; 2.Changehun Normal University, Changehun, Jilin 130032, China |
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| Abstract: | A novel algorithm of frequency restricted red-black wavelet transform for image restoration is presented. Introducing the frequency restricted factor, the algorithm restricts each and every frequency coefficient to retain image information while compressing the noise. The algorithm makes use of the red-black wavelet transform in extracting image from the result, compressing its color noise and ringing effect. Experimental results showed that the algorithm is three times as effective than Wiener filtering, and power spectrum equalization filtering on the R SN and R SN parameters. |
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| Keywords: | image restoration frequency restricting red-black wavelet transform |
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