Scaler gate array for scaling image data

Details Scaler gate array for scaling image data Scaler gate array for scaling image data

1990-12-29

1992-08-18

Razavi, Michael

Image analysis

Histogram processing

For setting a threshold

382 44, 358451, G06K 942, G06K 932

Patent

active

051406489

ABSTRACT:
The apparatus and method of the present invention utilizes three scaling functions for bi-tonal digitized image data such as documents. The digitized document resolution (i.e. from a digitizing scanner) may be different from the resolution of an image output device (i.e. laser printer, CRT display, fax machine, etc.). The invention takes in the scanned image data and scales the data to compensate for the resolution mismatch of the output device. Although the invention is intended for document archive applications (such as scanning documents on microfilm), the scaling can be performed on any bi-tonal image.

REFERENCES:
patent: 4598283 (1986-07-01), Tung et al.
patent: 4809345 (1989-02-01), Tabata et al.
patent: 4907171 (1990-03-01), Nagashima
patent: 4907284 (1990-03-01), Ohuchi

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