H∞ deconvolution filter design and its application in image restoration

This paper addresses the use of H_∞ filtering to deconvolution, in particular, to the problem of image restoration. The proposed H_∞ deconvolution filter has some advantages in the image restoration such as it can deal with unknown boundary problem and spatially varying blurs. The H_∞ filter is compared with the inverse Wiener filter and a regularized restoration. The experimental results show that the H_∞ filter deals with the unknown boundary problem better than the Wiener filter. Compared with the regularization method, it gives a sharper restored image, especially, when the original image contains many details