Recursive digital filters in image processing

Recently there has been a great deal of interest in the design and stability analysis of 2 dimensional recursive digital filters. Workers in the field have concentrated most of their efforts on these problems, but little has been reported on eigher the applications of their designs, or indeed if the designs were intended for any specific applications. In this paper, we examine the use of recursive filters in the image processing area, specifically that of (a) inverse filtering in image restoration and (b) image enhancement. Recent methods are used in the design of these filters and discussions as to their usefulness with supporting examples are presented.