This paper proposes an approach to the approximate realization of two-dimensional FIR digital filters by using the decomposition of their coefficient matrices. This approach is based on the design method of multistage separable planar filters, and red...
This paper proposes an approach to the approximate realization of two-dimensional FIR digital filters by using the decomposition of their coefficient matrices. This approach is based on the design method of multistage separable planar filters, and reduces with very small error the number of required computations(number of multiplications/additions), register coefficients and memories applying the intimate relationship between the eigen values of every stage and ranks of the matrices.