| 改进的脊波变换图像半软阈值降噪方法 |
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| 引用本文： | 罗忠亮,林土胜. 改进的脊波变换图像半软阈值降噪方法[J]. 计算机科学, 2009, 36(3): 241-243 |
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| 作者姓名： | 罗忠亮 林土胜 |
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| 作者单位： | 韶关学院电子与通信工程系,韶关,512005;华南理工大学电子与信息学院,广州,510641;华南理工大学电子与信息学院,广州,510641 |
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| 基金项目： | 国家自然科学基金，广东省自然科学基金团队项目 |
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| 摘 要： | 脊波变换是一种源于小波又高于小波的多尺度几何分析方法,应用于图像中.借鉴小波去噪的思想提出一种新的图像去噪方法,采用基于Bayesian估计的自适应阈值和半软阈值技术进行去噪,针对脊渡变换所产生的轻微的"划痕",引入平移不变的方法消除这种条纹干扰.实验结果表明,该方法较好地处理了图像细节和边沿保留与噪声抑制的矛盾,是一种有效的去噪方法.
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| 关 键 词： | 半软闻值去噪 脊波变换 平移不变 贝叶斯估计 |
| 收稿时间： | 2008-04-08 |
Image Semi-soft Threshold Denoising Method Based on Improved Ridgelet Transform |
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| LUO Zhong-liang,LIN Tu-sheng. Image Semi-soft Threshold Denoising Method Based on Improved Ridgelet Transform[J]. Computer Science, 2009, 36(3): 241-243 |
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| Authors: | LUO Zhong-liang LIN Tu-sheng |
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| Affiliation: | Department of Electronics and Communication Engineering;Shaoguang College;Shaoguang 512005;China;School of Electronics and Information;South China University of Technology;Guangzhou 510641;China |
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| Abstract: | Ridgelet is a multi-scale geometric analysis method that comes from wavelet and is better than it,which is a-pplied in the image processing.This paper presented a new denoising way using the essence of wavelet image denoising,the new one is based on adaptive threshold of Bayesian estimation and semi-soft threshold techniques.In view of little scratch caused by ridgelet transform,the interference was eliminated with the method of shift invariant.The experimental results show that this method can better deal ... |
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| Keywords: | Semi-soft threshold denoising Ridgelet transform Shift invariant Bayesian estimation |
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