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一个小波域上各向异性扩散去噪算法 被引量：4

An anisotropic diffusion denoising scheme in wavelet domain
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摘要 目的给出一个图像去噪的算法。方法利用小波变换把图像分解为高频子图和低频子图,再根据子图像的特点,采用不同的各向异性扩散方法处理各个子图,最后重构图像。结果各向异性扩散在图像平滑中,不但能够较好地抑制噪声,而且能够很好地保留图像原有的边缘和纹理特征,因而解决了图像去噪时高频部分和低频部分抑制噪声和保留边缘之间的矛盾问题。结论与已有的方法比较,该方法不但能够有效地去除噪声,而且能够保持图像中的细节。 Aim To presenta new model of image denoising.Methods In wavelet domain,according to the characteristics of each sub-image,use different ways of anisotropic diffusion to denoise.Results A new anisotropic diffusion denoising scheme in wavelet domain is given.This scheme combines anisotropic diffusion superiority with multiresolution analysis of wavelet transform.It leads to locally coarse grids in areas of resulting smooth image intensity,while enhanced edges are still resolved on fine grid level.Conclusion Experiments show that the present algorithm is efficient for image denoising and can maintain image detail.
作者 许永峰 张书玲 张博 苏永利
机构地区 西北大学数学系
出处 《西北大学学报（自然科学版）》 CAS CSCD 北大核心 2008年第5期689-692,共4页 Journal of Northwest University（Natural Science Edition）
关键词 各向异性扩散 小波变换 偏微分方程 图像去噪 anisotropic diffusion wavelet transform PDE image denoising
分类号 TN911.73 [电子电信—通信与信息系统]
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参考文献11

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共引文献36

同被引文献18

  • 1姜东焕,冯象初,宋国乡.基于非线性小波阈值的各向异性扩散方程[J].电子学报,2006,34(1):170-172. 被引量：15
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  • 10祝轩,周明全,耿国华,董乐红.一种新的三阶非线性扩散图像平滑方法及其算法实现[J].计算机科学,2007,34(12):227-230. 被引量：5

引证文献4

二级引证文献4

西北大学学报（自然科学版）
2008年 第5期

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