一种基于前后向扩散的图像去噪与增强方法

杨学峰, 李金宗, 李冬冬, 朱兵

杨学峰, 李金宗, 李冬冬, 朱兵. 一种基于前后向扩散的图像去噪与增强方法[J]. 武汉大学学报 ( 信息科学版), 2010, 35(8): 975-978.
引用本文: 杨学峰, 李金宗, 李冬冬, 朱兵. 一种基于前后向扩散的图像去噪与增强方法[J]. 武汉大学学报 ( 信息科学版), 2010, 35(8): 975-978.
YANG Xuefeng, LI Jinzong, LI Dongdong, ZHU Bing. A Forward and Backward Diffusion Based on Image Denoising and Enhancement Method[J]. Geomatics and Information Science of Wuhan University, 2010, 35(8): 975-978.
Citation: YANG Xuefeng, LI Jinzong, LI Dongdong, ZHU Bing. A Forward and Backward Diffusion Based on Image Denoising and Enhancement Method[J]. Geomatics and Information Science of Wuhan University, 2010, 35(8): 975-978.

一种基于前后向扩散的图像去噪与增强方法

基金项目: 总装预研基金资助项目(51322020703)
详细信息
    作者简介:

    杨学峰,博士生,主要从事图像复原与超分辨、图像处理与模式识别的研究。

  • 中图分类号: P237.3

A Forward and Backward Diffusion Based on Image Denoising and Enhancement Method

Funds: 总装预研基金资助项目(51322020703)
  • 摘要: 将各向异性前向扩散和后向扩散进行深度融合,提出了一种基于前后向扩散的图像去噪与增强方法。该方法利用非线性结构张量代替直接的梯度估计,增强对噪声的鲁棒性;将沿梯度方向增强的冲击滤波项改为按照自适应设定的阈值,进行前向扩散去噪和后向扩散增强的相互转换;对于角型结构,在与梯度垂直方向同样进行后向扩散,以增强角型纹理。实验结果表明,本文算法不仅有效去除了噪声,而且增强了纹理。
    Abstract: A novel forward and backward diffusion based image denoising and enhancement method is proposed.In the proposed method,the direct gradient computation is replaced by a nonlinear structure tensor(NLST) to increase the robustness to noise;The shock filter item along the gradient direction is replaced by a forward or backward diffusion according with the adaptive threshold value of gradient;The corner structure is also enhanced by performing a backward diffusion in corner region.Two experimental results show that the proposed algorithm not only removes noise,but also efficiently enhances image texture details and no artifacts are produced.
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出版历程
  • 收稿日期:  2010-06-14
  • 修回日期:  2013-07-08
  • 发布日期:  2010-08-04

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