Patent ID: 8135233

Claim:
An apparatus for restoring a degraded digital image, said apparatus comprising: an image processor configured to perform the steps of: transforming an image degradation matrix into a circulant matrix; applying a frequency transformation to the circulant matrix and a data vector to obtain a frequency domain solution for the restored image; componentizing the frequency domain solution to produce a plurality of frequency domain components; and processing each frequency domain component individually, wherein the frequency domain solution is componentized and represented by {circumflex over (F)} k =(Ω k * T Ω k +λQ k * T Q k ) −1 Ω k * T G k where Λ H is a block diagonal matrix having on its diagonal multi-channel frequency response matrices, G is the data vector after the frequency transformation, Ω k represents a matrix in the diagonal the frequency transformed degradation matrix, λ is a scalar and Q k is an entry in a matrix Q containing a predetermined constraint kernel.