Color image processing with adjustment of computed recording col

Details Color image processing with adjustment of computed recording col Color image processing with adjustment of computed recording col

1993-03-01

1993-12-14

Brinich, Stephen

Facsimile and static presentation processing

Natural color facsimile

Color photography previewer

358500, H04N 146, G03F 308

Patent

active

052708080

ABSTRACT:
There is disclosed a color image processing method and apparatus therefor, in which the input image data are converted into a color coordinate system represented by luminosity and hue, for example L*a*b* space. The colors reproducible on the output device, for example a printer, are also converted into this coordinate system. An average value is calculated over plural pixels in the vicinity of an object pixel to be digitized, and plural average values are then obtained by including the object pixel selected at each of the reproducible colors. The input image signal is digitized to the closest one of the plural average signals. The digitization error generated upon digitization is distributed to the succeeding pixels with weighted ratios. This method achieves faithful color reproduction, matching the colors reproducible on the recording or display device.

REFERENCES:
patent: 4672432 (1987-06-01), Sakurada et al.
patent: 4745465 (1988-05-01), Kwon
patent: 4794382 (1988-12-01), Lai et al.
patent: 4884130 (1989-11-01), Huntsman
patent: 4907076 (1990-03-01), Ohsawa
patent: 4924301 (1990-05-01), Surbrook
patent: 4926251 (1990-05-01), Sekizawa et al.
patent: 4972257 (1990-11-01), Birnbaum et al.
patent: 4992864 (1991-02-01), Akiyama
patent: 5008742 (1991-04-01), Shigaki et al.

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