Design of 2-d Mth band lowpass FIR eigenfilters with symmetries

被引:4
|
作者
Patwardhan, Pushkar G. [1 ]
Gadre, Vikram M. [1 ]
机构
[1] Indian Inst Technol, Dept Elect Engn, Bombay 400076, Maharashtra, India
关键词
eigenfilters; multidimensional finite impulse response (FIR) filter; two-dimensional (2-D) Mth band filters; FILTERS;
D O I
10.1109/LSP.2007.891322
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
In this letter, we extend the eigenfilter filter design method for the design of two-dimensional Mth band lowpass filters, with the filter impulse response having quadrantal or diagonal symmetry. We show that imposing the Mth band and symmetry constraints puts restrictions on the possible choices of the matrix M. We identify sufficient conditions on M, and show a class of matrices satisfying those conditions, so that Mth band lowpass filters with quadrantal or diagonal symmetry can be designed.
引用
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页码:517 / 520
页数:4
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