A video rate architecture for a fully recursive two-dimensional filter

The improvements in VLSI technology over the past few years have made high-speed digital filtering commonplace. This paper presents a video rate architecture for a two-dimensional (2-D) filter which can be implemented using wafer scale integration. The filter is made up of 1-D row operators. These row operators in turn are realized as a block-processed system composed of three basic cells: multipliers, adders, and registers. The row operators are combined recursively to form a 2-D fully recursive filter. A practical application of image enhancement with this filter is presented.