2-D TWO-FOLD SYMMETRIC CIRCULAR SHAPED FILTER DESIGN WITH HOMOMORPHIC PROCESSING APPLICATION

被引：0

作者：

Seneviratne, A. J. ^{[1
]}

Kha, H. H. ^{[1
]}

Tuan, H. D. ^{[1
]}

Nguyen, T. Q. ^{[2
]}

机构：

[1] Univ New S Wales, Sch Elect Engn & Telecommun, Sydney, NSW 2052, Australia

[2] Univ Calif San Diego, Dept Elect & Comp Engn, La Jolla, CA 92093 USA

来源：

2010 IEEE INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH, AND SIGNAL PROCESSING | 2010年

关键词：

Two-fold symmetric; Two-dimensional Circular shaped filter; Semi-definite program; Trigonometric polynomials; TRANSFORM;

D O I：

10.1109/ICASSP.2010.5495877

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

A design method of a linear-phased, two-dimensional (2-D), two-fold symmetric circular shaped filter is presented in this paper. Although the proposed method designs a non-separable filter, its implementation has linear complexity. The shape of the passband and the stopband is expressed in terms of level sets of second order trigonometric polynomials. This enables the transformation of the filter specifications to a Semi-Definite Program (SDP) of moderate dimension. The proposed filter outperforms currently available filter design methods. We present a performance comparison, as well as a homomorphic processing image enhancement example to illustrate the effectiveness of this method.

引用

页码：3694 / 3697

页数：4

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