Facsimile and static presentation processing – Natural color facsimile – Color correction
Patent
1996-11-08
1998-07-14
Vu, Kim Yen
Facsimile and static presentation processing
Natural color facsimile
Color correction
358534, 358518, 358519, 358504, 382254, G03F 308, H04N 146, G06K 940
Patent
active
057813159
ABSTRACT:
In a photographic printer in which red, green and blue light beams are modulated respectively according to red, green and blue image signals each made up of image signal components representing densities of the corresponding color of respective picture elements obtained by reading out an image recorded on a color photographic film, and a color image is recorded on a color photosensitive material by scanning the photosensitive material with the modulated light beams, the image signals are subjected to a calibration processing for substantially equalizing the gray scales for the respective colors and the processed image signals are subjected to a gray balance adjustment. An exposure condition of the color photographic film is determined on the basis of the image signals. The gray-balance-adjusted image signals are subjected to a processing for compensating for nonlinearity of the exposure-color-forming density characteristics of the color film according to the exposure condition. The thus processed image signals are subjected to a processing for adjusting the brightness of the print according to predetermined characteristics determined on the basis of the scene of photography.
REFERENCES:
patent: 4101216 (1978-07-01), Grossman
patent: 4561768 (1985-12-01), Fursich et al.
patent: 4589766 (1986-05-01), Fursich et al.
patent: 4827109 (1989-05-01), Matsumoto et al.
patent: 5081485 (1992-01-01), Terashita
Fuji Photo Film Co. , Ltd.
Vu Kim Yen
Williams Kimberly A.
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