Rectangular pattern recognition apparatus

Details Rectangular pattern recognition apparatus Rectangular pattern recognition apparatus

1982-03-11

1985-03-12

Martin, John C.

Image analysis

Histogram processing

For setting a threshold

382 25, 382 48, 382 61, G06K 900

Patent

active

045049696

ABSTRACT:
A rectangular pattern recognition device is disclosed which operates to recognize and note the position of solid-line rectangles drawn on an input form, document, or the like. The apparatus first recognizes vertical and horizontal line segments and then discriminates the areas which lie within the joined segments. The device may further be provided with code or symbol recognition means which can discriminate symbols, e.g. an optional numbering of the rectangles from the other line segments forming the rectangles.

REFERENCES:
patent: 3553646 (1971-01-01), Hardin et al.
patent: 3582886 (1971-06-01), Hardin et al.
patent: 3810094 (1974-05-01), Mori et al.
patent: 4272756 (1981-06-01), Kakumoto et al.

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