Image processing apparatus having fuzzy set calculating means

Details Image processing apparatus having fuzzy set calculating means Image processing apparatus having fuzzy set calculating means

1992-09-15

1994-11-08

Ip, Paul

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358458, 355327, H04N 1387, G03G 1501

Patent

active

053632150

ABSTRACT:
An apparatus for converting an image data with a threshold value into a bi-level data. The apparatus includes a processing circuit for processing image data of pixels neighboring a target pixel to generate membership functions and for obtaining a fuzzy set from the membership functions, and a threshold value generation circuit for generating a threshold value on the basis of the fuzzy set. The threshold value is used to convert the image data of the target pixel.

REFERENCES:
patent: 5148089 (1992-09-01), Adachi et al.
patent: 5191638 (1993-03-01), Wakami et al.
patent: 5193144 (1993-03-01), Tsutsumi et al.
patent: 5243666 (1993-09-01), Hasegawa et al.
patent: 5245445 (1993-09-01), Fujisawa
patent: 5262833 (1993-11-01), Fukushima et al.
Ting et al., "Pre-Processing Techniques for Digital Facsimile", 1978 International Conference on Communications, vol. 3, pp. 4851-4856, Jun. 4-7, 1978.
"Method for Producing a High Resolution Image", IBM Technical Disclosure Bulletin, vol. 31, No. 5, Oct. 1988.

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