Method and apparatus for processing image

Details Method and apparatus for processing image Method and apparatus for processing image

1989-01-27

1990-05-29

Hix, L. T.

Photocopying

Projection printing and copying cameras

Multicolor picture

358 80, 358457, G03B 2772

Patent

active

049299794

ABSTRACT:
According to a method and apparatus for processing an image, density data representing a density of each pixel of original image data and color data representing a color of each pixel are generated. The density and color data are generated as parallel data. A write mode of a memory is set. A memory content is repeated updated in correspondence with the density data and the color data. A read mode of the memory is set. A memory content corresponding to one of the color data is externally read out. Threshold values are set in units of color data on the basis of the memory content read out from the memory. Recording density data having a smaller number of bits is formed by the set threshold values on the basis of the density data. Recording is performed on the basis of the formed recording density data.

REFERENCES:
patent: 4710822 (1987-12-01), Matsunawa
patent: 4742400 (1988-05-01), Tsuji
patent: 4841361 (1989-06-01), Matsunawa

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