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Meissner, Michael; Dooley, Laurence S.; Buchwald, Wolf-Peter and Schmidt, Gunnar
(1995).
DOI: https://doi.org/10.1049/ic:19951454
URL: http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arn...
Abstract
The paper firstly reviews the basic two-channel subband coding system and its implementation using both quadrature mirror filter (QMF) and conjugate quadrature filter (CQF) designs. Their features and performance characteristics for the one-dimensional case are examined and then using the principle of separability, 2-D QMF-CQF implementations are constructed, as the product of two l-D transfer functions. Examples of 2-D QMF-CQFs in band-splitting configurations for video applications are explored and discussed