Image Restoration

In the filtering operations presented in the last chapter, it is assumed that no knowledge of the source of degradation of the image is available. In this chapter, the restoration of the images is presented. This is a linear filtering operation in which prior knowledge of the source of degradation of the image is known. A restoration filter is designed based on the nature of the degradation process and the noise. The convolution of this filter with the degraded image restores the image with respect to least squares error criterion.