计算机应用 ›› 2014, Vol. 34 ›› Issue (10): 2963-2966.DOI: 10.11772/j.issn.1001-9081.2014.10.2963
董婵婵1,张权1,郝慧艳1,张芳1,刘祎1,孙未雅1,桂志国1,2
收稿日期:
2014-04-02
修回日期:
2014-05-24
出版日期:
2014-10-01
发布日期:
2014-10-30
通讯作者:
桂志国
作者简介:
基金资助:
国家自然科学基金资助项目;山西省国际合作项目;山西省高等学校优秀青年学术带头人支持计划项目;山西省高等学校优秀青年学术带头人支持计划项目;中北大学第十届研究生科技基金项目
DONG Chanchan1,ZHANG Quan1,HAO Huiyan1,ZHANG Fang1,LIU Yi1,SUN Weiya1,GUI Zhiguo1,2
Received:
2014-04-02
Revised:
2014-05-24
Online:
2014-10-01
Published:
2014-10-30
Contact:
GUI Zhiguo
摘要:
针对图像去噪过程中存在边缘保持与噪声抑制之间的矛盾,提出了一种基于变指数的片相似性扩散图像降噪算法。算法基于变指数的自适应降噪模型,引入片相似性的思想,构造出新的边缘检测算子和扩散系数函数。传统的各项异性扩散图像降噪算法利用单个像素点的灰度相似性(或梯度信息)检测边缘,不能很好地保持图像的弱边缘和纹理信息。而所提算法利用邻域像素的灰度相似性,可以在滤除图像噪声的同时,保持更多的细节信息。仿真结果表明,与其他传统的基于偏微分方程(PDE)的图像降噪算法相比,该算法将信噪比(SNR)和峰值信噪比(PSNR)提高至16.602480dB和31.284672dB,具有良好的抗噪性;同时视觉效果较好,保持了更多的弱边缘和纹理等细节特征,在噪声抑制与边缘保持之间取得了较好的权衡。
中图分类号:
董婵婵 张权 郝慧艳 张芳 刘祎 孙未雅 桂志国. 基于变指数的片相似性扩散图像降噪算法[J]. 计算机应用, 2014, 34(10): 2963-2966.
DONG Chanchan ZHANG Quan HAO Huiyan ZHANG Fang LIU Yi SUN Weiya GUI Zhiguo. Patch similarity anisotropic diffusion algorithm based on variable exponent for image denoising[J]. Journal of Computer Applications, 2014, 34(10): 2963-2966.
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