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It is shown that an arbitrary rational 2-D transfer function can be expanded in first order terms, each one of which is a function of only one of the two variables. This method leads naturally to reconfigurable filters with great modularity and parallelism, which can realize any rational transfer function up to a given order.
Acoustics, Speech and Signal Processing, IEEE Transactions on (Volume:33 , Issue: 6 )
Date of Publication: Dec 1985