On the design of 2D IIR digital filters using penalty optimization techniques
N. Papamarkos · International Journal of Circuit Theory and Applications · 1992
Abstract In this paper an efficient technique is developed for the design of two‐dimensional recursive digital filters in the frequency domain. the formulation of the design problem is based upon a rational approximation method in parallel with a suitable interior penalty technique. the structure of the proposed approach permits one to include in the design optimization problem additional constraints related to the stability, linear phase and symmetries properties of the resultant filter. In contrast with previous design methods, the coefficients of the filters are determined directly and it is not required to apply any ‘inverse’ or stabilization technique. Analytical examples illustrate the features and effectiveness of the proposed approach.