Apparatus for producing a code word

Details Apparatus for producing a code word Apparatus for producing a code word

1982-09-09

1985-04-02

Boudreau, Leo H.

Image analysis

Histogram processing

For setting a threshold

358261, G06K 900, H04N 100

Patent

active

045091943

ABSTRACT:
An apparatus for producing a code word indicative of vertical correlations in color changes between scanned lines of an information bearing document. The apparatus comprises a memory and counter for storing and retrieving the color of picture elements in the prior scanned line from which correlation is determined. The apparatus further comprises a state machine which may produce an intermediate code word from data corresponding to only part of the picture elements being correlated and which remembers the data from other picture elements by moving from state to state.

REFERENCES:
patent: 4107648 (1978-08-01), Frank
patent: 4228467 (1980-10-01), de Loye et al.
patent: 4257069 (1981-03-01), Murayama et al.

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