Image density processor

Details Image density processor Image density processor

1989-06-27

1990-11-20

Boudreau, Leo H.

Image analysis

Histogram processing

For setting a threshold

382 54, 358457, 358458, G06K 938, G06K 940

Patent

active

049725009

ABSTRACT:
There is an image processing apparatus which can further digitally control the density of the image signal read out from the image file in which the dither-processed image signal was stored. This apparatus comprises an input device to input the dither-processed image signal, table memories which output the density correction data using the image signal of a plurality of bits inputted by the input device as an input address, and a visible output device to output the outputs of the table memories as visible outputs, wherein the input device reads out the dither-processed image signal from the image file.

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patent: 4667251 (1987-05-01), Hasegawa
patent: 4723173 (1987-07-01), Tanioka

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