数字图像的逆滤波复原

对原有逆滤波器进行了改进,从离焦模糊和运动模糊产生的原因出发,结合模糊图像与频谱图的对应关系,应用Hough变换估计出退化参数,然后利用逆滤波方法对模糊图像进行复原。实验结果表明,改进的逆滤波器简单易实现,复原结果较好,但Hough变换估计退化参数的准确性有待进一步提高。

Inverse Filter Restoration of Digital Image

Started from the cause of defocus-blurring and motion-blurring,some improvements based on the original inverse-filter is given.Then combined with the relationship between blurred image and Fourier spectrum,the PSF is worked out by Hough transform.In this way,original image can be enduced with inverse-filter.The experimental results show that restoration of the blurred image is good,and the method is easy to implement.But the accuracy of Hough transform parameter' s estimation needs further improvement.