| 基于脊波变换的自适应阈值图像去噪算法 |
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| 引用本文： | 汪西原,杨国梁. 基于脊波变换的自适应阈值图像去噪算法[J]. 宁夏大学学报(自然科学版), 2006, 27(4): 330-332,340 |
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| 作者姓名： | 汪西原 杨国梁 |
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| 作者单位： | 1. 宁夏大学,物理电气信息学院,宁夏,银川,750021
2. 陕西师范大学,计算机科学学院,陕西,西安,710062 |
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| 基金项目： | 国家自然科学基金;宁夏高等学校科研项目 |
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| 摘 要： | 利用脊波变换的方法，研究了图像去噪问题．设计了一种基于脊波变换的改进图像去噪算法，该算法采用软硬阈值折中函数，针对Normal Shrink阈值提出了改进．仿真实验表明，该算法与小波全局软硬阈值去噪、脊渡全局软硬阈值去噪等算法相比，图像的峰值信噪比值有明显提高，算法对以直线特征为主的图像较为有效．
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| 关 键 词： | 脊波变换 图像去噪 阈值 |
| 文章编号： | 0253-2328（2006）04-0330-03 |
| 收稿时间： | 2006-06-27 |
| 修稿时间： | 2006-06-27 |
An Adaptive Thresholding Image Denoising Algorithm Based on Ridgelet Transform |
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| Wang Xiyuan,Yang Guoliang. An Adaptive Thresholding Image Denoising Algorithm Based on Ridgelet Transform[J]. Journal of Ningxia University(Natural Science Edition), 2006, 27(4): 330-332,340 |
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| Authors: | Wang Xiyuan Yang Guoliang |
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| Abstract: | Based on ridgelet transform, the image denoising method is studied and an image denoising algorithm is designed. The threshold shrinkage function is incorporated into this method and the threshold and shrinkage function is improved. The experiments demonstrate that the PSNR of the proposed method are improved markedly compared with that of algorithms based on the wavelet transform. The algorithm is more valid to linear character images. |
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| Keywords: | ridgelet transform image denoising thresholding |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
