A novel algorithm for 2DIIR filters synthesis via 2DFIR filters model reduction
Amel Baha, Ain Chih · 2013
A digital 2DFIR filter with linear phase, circularly symmetric with respect to the origin of the frequency plane, is designed using the twodimensional windowing method. An economical filter with high information efficiency is obtained by applying the balanced realization method to this fullorder filter. The result is a linear phase IIR filter whose frequency response is very close to that of the initial filter.