离焦模糊图像的盲复原算法OACSCDCSTPCD
Blind Image Deconvolution for Defocus Blurred Image
针对离焦模糊图像,提出了一种盲复原算法.该算法首先利用Hough变换检测出离焦图像中的直线边缘,然后基于图像的空域统计特性和修正的Grubbs检验法,定位出阶跃或近似阶跃直线边缘,在此基础上自适应计算出线扩散函数,最后利用线扩散函数求取离焦模糊半径,进而用Wiener滤波完成了图像的复原.实验结果表明,对真实的离焦模糊图像,该算法能够准确地检测和定位出阶跃或近似阶跃边缘,提高离焦模糊半径的鉴别精度和图像的复原效果,已在实际刑侦取证工作中获得较为成功的应用.
An algorithm of blind image deconvolution is proposed for defocus blurred images.Firstly, Hough transform is applied to detect the line edges in the defocus image.Then the step-edges or approximate step-edges are located, based on the image spatial statistical characteristic and the modified Grubbs method.The line spread function is calculated by using the detected step-edges, and the radius of the defocus blur is obtained by adopting the relationship betwee…查看全部>>
孙韶杰;吴琼;李国辉
国防科学技术大学信息系统与管理学院,长沙,410073空军军训器材研究所,北京,100195空军军训器材研究所,北京,100195
信息技术与安全科学
离焦模糊阶跃边缘线扩散函数(LSF)点扩散函数(PSF)图像盲复原
defocus blur step edge line spread function(LSF) point spread function(PSF) blind image deconvolution
《计算机科学与探索》 2011 (4)
基于内容的视频结构发现和挖掘方法研究
324-335,12
The National Natural Science Foundation of China under Grant No.60273066 (国家自然科学基金).
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