Computing the transfer function for second-order 2D systems

In this paper the discrete Fourier transform is used to determine the coefficients of a transfer function of a new two-dimensional system model of second-order: x(i/sub 1/ + 2, i/sub 2/ + 2) = A/sub 0/x(i/sub 1/ + 1, i/sub 2/ + 1) + A/sub 1/x(i/sub 1/ + 1, i/sub 2/) + A/sub 2/x(i/sub 1/, i/sub 2/ + 1). The algorithm is straight forward and has been implemented using the software package "Matlab/spl trade/". A step-by-step example illustrating the application of the algorithm is presented.