Image forming apparatus having an MTF correction unit

Details Image forming apparatus having an MTF correction unit Image forming apparatus having an MTF correction unit

1997-02-27

1999-12-07

Boudreau, Leo H.

Facsimile and static presentation processing

Natural color facsimile

Color correction

358448, 358512, 358516, 358517, 358518, 358521, 358530, 358532, 358538, 382167, G03F 308

Patent

active

059992794

ABSTRACT:
An image forming apparatus which forms an image according to image data made up of pixel data on colors of pixel constituting an original image, characterized by comprising a color region discriminator for determining to which color region each pixel data belongs, an image region discriminator for determining whether the pixel data belongs to a uniform density region or whether it belongs to an edge portion, a corrective condition deciding unit for determining MTF corrective conditions for the image data of each color region depending on the discrimination results of both the color region discriminator and the image region discriminator, and an MTF correction unit for performing MTF corrections on the image data according to the MTF corrective conditions determined by the corrective condition deciding unit.

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patent: 5597311 (1997-01-01), Yanagida et al.
patent: 5867634 (1999-02-01), Hirota et al.

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