Quantized digital filter

Details Quantized digital filter Quantized digital filter

1988-05-10

1989-08-01

Boudreau, Leo H.

Image analysis

Histogram processing

For setting a threshold

382 50, 341 50, 341 95, 36472403, G06K 940

Patent

active

048539694

ABSTRACT:
A signal processing system (10) is provided for digitally filtering an input digital signal. The signal processing system (10) includes a digital filter (12) without normal finite precision arithmetic whose output is applied to an adaptive quantizer (14). The output of the adoptive quantizer (14) includes a digital signal having a number of bits per sample which is less than or equal to the number of bits per sample contained in the output of the digital filter (12).

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Goodman, D. J. and Gersho, A., "Theory of an Adaptive Quantizer", IEEE Trans. Commun., vol. COM-22, No. 8, pp. 1037-1045, Aug. 1974.
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Jayant, N. S., "Adaptive Quantization with a One-Word Memory", Bell Syst. Tech. J., vol. 52, No. 7, pp. 1119-1144, Sep. 1973.

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