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Concurrent architectures for two-dimensional recursive digital filtering

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2 Author(s)
K. K. Parhi ; Dept. of Electr. Eng., Minnesota Univ., Minneapolis, MN, USA ; D. G. Messerschmitt

Efficient architectures are presented for high-speed implementation of two-dimensional recursive digital filters of direct form and local state-space form. Unlike one-dimensional recursive systems, two-dimensional recursive digital filter algorithms have a large amount of inherent concurrency. The authors exploit this concurrency to derive fine-grain pipelined and one-dimensional block architectures for implementation of two-dimensional recursive digital filters by appropriate interleaving (or indexing) of the input samples, without requiring any algorithm transformation and without any hardware overhead. They then extend the look-ahead computation and incremental computation techniques to to dimensions and use them to derive two-dimensional incremental block filter architectures. The multiplication complexity of the two-dimensional incremental block filter is determined

Published in:

IEEE Transactions on Circuits and Systems  (Volume:36 ,  Issue: 6 )