Optical pattern extracting apparatus

Details Optical pattern extracting apparatus Optical pattern extracting apparatus

1990-02-07

1992-02-04

Moore, David K.

Image analysis

Histogram processing

For setting a threshold

2503272, 364736, G06K 900

Patent

active

050864904

ABSTRACT:
An optical pattern extracting apparatus has sets of strip-like photodetection elements oriented in horizontal, vertical and diagonal directions for decomposing a displayed character to be recognized, the photodetection elements are distributed in a large number of parallel microimage channels generated through an optical image multiplication system and the photodetection elements cover a display area of the character without their photodetection areas overlapping each other.

REFERENCES:
patent: 3694806 (1972-09-01), Freedman
patent: 4442550 (1984-04-01), Killat
patent: 4603253 (1986-07-01), Nakagawa

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