Image processing apparatus capable of preventing deterioration i

Details Image processing apparatus capable of preventing deterioration i Image processing apparatus capable of preventing deterioration i

1991-12-17

1994-03-29

Coles, Sr., Edward L.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358451, 382 47, H04N 140, H04N 1393

Patent

active

052990290

ABSTRACT:
An image processing apparatus capable of contracting or enlarging an original image includes a variable scale magnification processing unit for magnifying the original image in accordance with a magnification m, and a digital filter for correcting an image quality. Since weighting matrixes h1-h5 of the digital filter are varied depending on magnification m, a deterioration in image quality can be prevented irrespectively of magnifications.

REFERENCES:
patent: 4614977 (1986-09-01), Kawahara et al.
patent: 4725892 (1988-02-01), Suzuki et al.
patent: 4860118 (1989-08-01), Arimoto

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