Binary transformation method

Details Binary transformation method Binary transformation method

1982-11-23

1986-02-11

Coles, Sr., Edward L.

Facsimile and static presentation processing

Facsimile

Recording apparatus

H04N 140

Patent

active

045701865

ABSTRACT:
A method of transforming an image of a document into a binary signal. Each pixel of the document is read and expressed in terms of a signal having one of eight levels. This signal is compared with the signals of the immediately adjacent pixels. A new level is assigned to the given pixel according to the formula

REFERENCES:
patent: 4271436 (1981-06-01), Kurose et al.
patent: 4345314 (1982-08-01), Melamud et al.
patent: 4349846 (1982-09-01), Sekigawa
patent: 4389677 (1983-06-01), Rushby et al.

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