Some results on the nature of a 2-dimensional filter function possessing certain symmetry in its magnitude response
作者： P. Karivaratharajan , M.N.S. Swamy
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摘要: Constraints on analogue and digital two-dimensional filter functions so that they possess various symmetries like quadrantal symmetry circular in their magnitude responses are derived. An ideal circularly symmetric separable squared function is obtained. Approximation of the domain carried out contour plots resulting show very nearly symmetric.
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