| 一种基于二维小波块阈值数字图像去噪方法 |
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| 引用本文： | 黄红波.一种基于二维小波块阈值数字图像去噪方法[J].湖南理工学院学报,2006,19(1):31-33,39. |
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| 作者姓名： | 黄红波 |
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| 作者单位： | 华中科技大学计算机科学与技术学院,湖北武汉430074 |
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| 摘 要： | 小波系数在一个小邻域里具有相似性，若充分利用周围小波系数的信息，分块对小渡系数进行阈值去噪操作，可以在保持图像平滑的同时，尽量多地保留图像的细节信息。对Cai＆Silverman的方法进行分析，将其拓展到二维信号去噪，并提出一种基于小波块阈值数字图像去噪方法．实验结果表明，谊方法不但能保留更多的图像细节，而且具有较好的峰值信噪比。
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| 关 键 词： | 小波变换 二维小波阈值去噪 相邻小波系数 数字图像 |
| 文章编号： | 1672-5298（2006）01-0030-03 |
| 收稿时间： | 10 18 2005 12:00AM |
| 修稿时间： | 2005-10-18 |
An image de-noising method based on 2d wavelet threshold of blocks |
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| HUANG Hong-bo.An image de-noising method based on 2d wavelet threshold of blocks[J].Journal of Hunan Institute of Science and Technology,2006,19(1):31-33,39. |
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| Authors: | HUANG Hong-bo |
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| Abstract: | Wavelet coefficients are correlated in a small neighbourhood. We can take into account neighbour wavelet coefficient, and threshold the wavelet coefficients. Thus can produces smoother and clearer denoised images.In this paper, we discuss the Cai&Siiverman's idea and extend it to the 2D case, then we present a de-noising method based on 2D wavelet thresholds. The experimental results show that the proposed method can keep images' detail information and get higher PSNR for the denoised images. |
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| Keywords: | wavelet transform 2D wavelet threshold de-noising neighbouring wavelet coeffieients digital image |
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