Vector quantizer

Details Vector quantizer Vector quantizer

1989-02-27

1993-03-16

Britton, Howard W.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358135, 358136, H04N 7137

Patent

active

051949504

ABSTRACT:
A vector quantizer which transmits the input vector of the time when the minimum distortion is larger than the preset distortion threshold value and stores such input vector into the second code book as the new quantizing representative vector for the use in the successive vector quantizing processes. Further, since the first and second code book constitute in the form of tree-structure, calculation for search may be executed at a high speed.

REFERENCES:
patent: 4670851 (1987-06-01), Murakami et al.
patent: 4710812 (1987-12-01), Murakami et al.
patent: 4845559 (1989-07-01), Labit
patent: 4853778 (1989-08-01), Tanaka
patent: 4853779 (1989-08-01), Hammer
Robert M. Gray, "Vector Quantization", IEEE ASSP Magazine, Apr. 1984, pp. 4-29.
T. Murakami et al., "Dynamic Multistage Vector Quantization of Images", Electronics and Communication in Japan, Part 1, vol. 69, No. 3, Scripta Technica, Inc., 1986.
T. Murakami et al., "Vector Quantiser of Video Signals", Electronics Letters 11th, vol. 18, No. 23, Sep. 29, 1982, pp. 1005-1006.

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