Design and implementation of two-dimensional FIR digital filters with nonrectangular arrays

A new technique for the design of two-dimensional FIR digital filters is presented in this paper. A high-order impulse response array of a filter may be optimally truncated to give a low-order impulse response array. In general, such low-order arrays are nonrectangular. A method for implementing the filters is presented. Examples of the design and implementation techniques are included.