NDLI: Optimal subband coders of quantized multidimensional signals

Content Provider	IEEE Xplore Digital Library
Author	Strintzis, M.G.
Copyright Year	1992
Abstract	A new general method is presented for the analysis of the effects of quantization and transmission noise in subband filter-bank multidimensional signal and image coders. Using general statistical noise characterization, the filter banks are obtained, which are optimal in the sense of minimizing the variance of the difference of the reconstructed signal from the original. It is shown that these are not identical to those achieving perfect reconstruction in lossless coding. A general method is described for the optimal selection of the synthesis filters if the analysis filters and quantizers are given. Assuming the use of these optimal synthesis filters, a method is then developed for the determination of the optimal analysis filters and the optimal bit-allocation to the subbands. The effects of quantization on perfect reconstruction filter-banks are analyzed next, and an explicit expression is determined for the quantizer noise-to-signal ratio for such banks. Given arbitrary quantizers, the analysis filters which are optimal in the sense of minimizing the output noise power are obtained. Finally, the jointly optimal selection is determined for the analysis filters and the bit allocations of the subbands. It is seen that this selection is identical to that determined for the theoretically optimal filter-banks.
Sponsorship	IEEE Circuits and Systems Society
Starting Page	757
Ending Page	770
Page Count	14
File Size	612614
File Format	PDF
ISSN	10577130
Volume Number	47
Issue Number	8
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2000-08-01
Publisher Place	U.S.A.
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Multidimensional systems Quantization Signal synthesis Signal analysis Pulse modulation Image reconstruction Signal to noise ratio Digital filters Filter bank Bit rate
Content Type	Text
Resource Type	Article
Subject	Signal Processing Electrical and Electronic Engineering

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