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Design of two-dimensional recursive digital filters with specified magnitude and group delay characteristics

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2 Author(s)

A technique is proposed for the design of two-dimensional (2-D) recursive filters with a response that best approximates, in thel_psense, prescribed magnitude and group delay specifications. The filter stability is guaranteed through the use of a frequency transformation. The optimization technique used is that of Davidon-Fletcher and Powell. Several examples are given to illustrate the proposed algorithm.

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Circuits and Systems, IEEE Transactions on  (Volume:25 ,  Issue: 11 )