Title :
Optimal design of dual-channel subband filter structures for video and image applications
Author :
Schmidt, G. ; Buckwald, W.P. ; Dooley, L.S.
Author_Institution :
FH Wolfenbuettel, Fb-Elektrotech., Germany
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
Keywords :
antialiasing; band-pass filters; circuit optimisation; image reconstruction; image sampling; quadrature mirror filters; two-dimensional digital filters; video signal processing; 2D diagonal prefilter; 2D digital subband filter bank implementation; aliasing; decoder; design considerations; dual-channel subband filter structures; image applications; optimal design; orthogonal sampling structures; performance; quadrature mirror filter pair; signal reconstruction; video applications; Band pass filters; Bandwidth; Decoding; Filter bank; Frequency; Image sampling; Signal analysis; Signal design; Signal reconstruction; Signal synthesis;
Conference_Titel :
Signal Processing, 1996., 3rd International Conference on
Conference_Location :
Beijing
Print_ISBN :
0-7803-2912-0
DOI :
10.1109/ICSIGP.1996.567279
