Design of efficient circularly symmetric two-dimensional variable digital FIR filters

Design of Circularly Symmetric Two-Dimensional Linear-Phase Lowpass FIR Filters using Closed-Form Expressions

Design of Stable Circularly Symmetric Two-Dimensional GIC Digital Filters Using PLSI Polynomials

A method for designing stable circularly symmetric two-dimensional digital filters is presented. Two-dimensional discrete transfer functions of the rotated filters are obtained from stable one-dimensional analog-filter transfer functions by performing rotation and then applying the double bilinear transformation. The resulting filters which may be unstable due to the presence of nonessential si...

A Novel Approach for the design of 2D Sharp Circularly Symmetric FIR Filters

In applications like weather monitoring, remote sensing, seismic signal processing etc, the boundaries and sharp features of the images have to be enhanced to obtain useful results and interpretations. The two dimensional(2D) highpass filters are used for such image processing applications. A direct design of the 2D high pass filter using frequency transformation has not been reported in the li...

Design of Two-Dimensional Recursive Digital Filters

[12] T. L. ,Fhang, “Limit cycles in a two-dimensional first-order digital y;lt; IEEE Trans. Circuits Syst., vol. CAS-24, pp. 15-19, Jan. + [13] A. Fettweis, “Pseudopassivity, sensitivity and stability of wave digital filters,” IEEE Trans. Circuit Theory, vol. CT-19, pp. 668673, Nov. 1972. [ 141 ?, “Realizability of digital filter networks,” Arch. Elektr. Alfred Fettweis (M’56-SM’62-F’75), for a...

Efficient genetic algorithm design for power-of-two FIR filters