New 2-D quadrantal- and diagonal-symmetry filter architectures using delta operator
Pei‐Yu Chen, Lan-Da Van, I‐Hung Khoo, Hari C. Reddy · 2017
In this paper, we propose two new two-dimensional (2-D) IIR filter architectures with quadrantal and diagonal magnitude symmetry using delta operator. These filter architectures can attain lower coefficient sensitivity in comparison with the traditional shift-operator formulation (i.e., the conventional z-domain filters). The IIR filter structures presented not only achieve lower coefficient sensitivity without sacrificing the number of multipliers, but in fact reducing the number of multipliers by 36.36% compared with the previous corresponding quadrantal symmetry filter structures using delta operator with order N=3.