Method of and apparatus for producing predominate and non-predom

Details Method of and apparatus for producing predominate and non-predom Method of and apparatus for producing predominate and non-predom

1991-12-20

1995-04-11

Mancuso, Joseph

Image analysis

Histogram processing

For setting a threshold

101211, 382 17, 395110, 395150, G06K 918

Patent

active

054066409

ABSTRACT:
Color coding of characters both for optical character recognition by a machine and for viewing by a human is provided by coloring a character with a predominate color distinguishable by humans and a non-predominate color non-distracting to humans, but distinguishable by a color scanner. The advantage of the present invention is higher optical character recognition accuracy rates without the severe visual distraction to human readers of prior art color coded characters. A further technical advantage is that the invention can be practiced with conventional color printers and color scanners instead of the specialized apparatus of prior art color coded characters.

REFERENCES:
patent: 3938088 (1976-02-01), Clark
patent: 3990043 (1976-11-01), Clark
patent: 4009466 (1977-02-01), Clark
patent: 4829568 (1989-05-01), Clark et al.
patent: 4831657 (1989-05-01), Casey et al.
patent: 5103303 (1992-04-01), Shoji et al.
patent: 5153739 (1992-10-01), Lamon et al.

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