Image processing apparatus

Details Image processing apparatus Image processing apparatus

1989-08-17

1991-11-26

Coles, Sr., Edward L.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

382 54, H04N 140

Patent

active

050687468

ABSTRACT:
An image processing apparatus for digitizing an analog image by dispersing the digitizing error to the surrounding areas. The characteristics or edge of the analog imnage are identified, and the error dispersing area is varied according to the result of identification, thus enabling reproduction of the image with high quality regardless of the nature of the original image.

REFERENCES:
patent: 4672433 (1987-06-01), Yamamoto et al.
patent: 4876610 (1989-10-01), Ohsawa et al.
patent: 4878125 (1989-10-01), Katayama et al.
patent: 4926251 (1990-05-01), Sekizawa et al.
patent: 4958218 (1990-09-01), Katayama et al.
patent: 5008950 (1991-04-01), Katayama et al.

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