Image data processing apparatus and system

Details Image data processing apparatus and system Image data processing apparatus and system

1984-10-01

1987-06-23

Ciarlante, Anthony V.

Image analysis

Histogram processing

For setting a threshold

382 47, G06K 936

Patent

active

046759085

ABSTRACT:
An image data processing apparatus has an image reader for reading a halftone image or character image, and an operational processing system including an interface, a main memory, a DMAC, an MPU, a CRT, a CRTC, and an enlargement/reduction operation circuit. An image data processing system including a microcomputer, a laser beam printer, and an image file or the like allows real-time image data display or printing at any desired enlargement/reduction ratio as an image is read by the image reader while not impairing the characteristics of either the halftone or the character image.

REFERENCES:
patent: 4167728 (1979-09-01), Sternberg
patent: 4275450 (1981-06-01), Potter
patent: 4301469 (1981-11-01), Modeen et al.
patent: 4453267 (1984-06-01), Paganini et al.
patent: 4525858 (1985-06-01), Cline et al.
patent: 4545068 (1985-10-01), Tabata et al.

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