Optimal design of dual-channel subband filter structures for video and image applications

Schmidt, G.; Buchwald, W. P. and Dooley, L. S. (1996). Optimal design of dual-channel subband filter structures for video and image applications. In: 3rd IEEE International Conference on Signal Processing (ICSP’96), 14-18 Oct 1996, Beijing, China, pp. 373–376.

DOI: https://doi.org/10.1109/ICSIGP.1996.567279

Abstract

This paper discusses the many and varied design considerations of a 2D digital subband filter bank implementation for orthogonal sampling structures, which enables the derivation of only two subbands rather than the usual four. In particular, the design trade-off and overall performance of a quadrature mirror filter pair, in combination with a 2D diagonal prefilter is explored and the ensuing problems of avoiding and compensating for aliasing within the subbands, as well as for the signal reconstruction process at the decoder are highlighted.

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