Image processing apparatus with reduced image deterioration in h

Details Image processing apparatus with reduced image deterioration in h Image processing apparatus with reduced image deterioration in h

1993-09-10

1994-10-25

Brinich, Stephen

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358298, H04N 140

Patent

active

053594339

ABSTRACT:
An image processing apparatus binarizes input multi-level pixel data by changing the same either to the minimum density data corresponding to white or to a minimum reproducible density data corresponding to the minimum density level reproducible by an image forming apparatus such as a printer, when the density defined by the input multi-level pixel data is of such a low level that it cannot be reproduced by the image forming apparatus. Error incurred by the binarization is reflected in the succeeding binarizing process so that the density of the whole image is preserved, whereby an image with a highlight portion can be recorded with reduced degradation of the image quality at the highlight portion.

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