th Band Lowpass FIR Eigenfilters With Symmetries
نویسندگان
چکیده
In this letter, we extend the eigenfilter filter design method for the design of two-dimensional th band lowpass filters, with the filter impulse response having quadrantal or diagonal symmetry. We show that imposing the th band and symmetry constraints puts restrictions on the possible choices of the matrix . We identify sufficient conditions on , and show a class of matrices satisfying those conditions, so that th band lowpass filters with quadrantal or diagonal symmetry can be designed.
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