Image data masking device

Details Image data masking device Image data masking device

1985-07-26

1987-12-01

Boudreau, Leo H.

Image analysis

Histogram processing

For setting a threshold

382 27, 382 49, 382 54, G06K 936

Patent

active

047109653

ABSTRACT:
A device for masking video data for character recognition, pattern recognition and other applications is disclosed. Pixel data stored in an image memory are two-dimensionally accessed by an X direction counter and a Y direction counter. At each time of access, pixel data read out are serially shifted by a first shift register which comprises flip-flops. Outputs of the first shift register are shifted by second shift registers which also comprise flip-flops, in synchronism with the first one of memory read signals.

REFERENCES:
patent: 4142246 (1979-02-01), Fumihiko
patent: 4414685 (1983-11-01), Sternberg
patent: 4443855 (1984-04-01), Bishop et al.
patent: 4446459 (1984-05-01), Bond, Jr. et al.
patent: 4597009 (1986-01-01), Ballmer et al.
patent: 4610026 (1986-09-01), Tabata et al.

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