Photocopying – Projection printing and copying cameras – Multicolor picture
Patent
1988-01-19
1989-03-28
Wintercorn, Richard A.
Photocopying
Projection printing and copying cameras
Multicolor picture
G03B 2780
Patent
active
048168742
ABSTRACT:
An exposure determining device detects densities of a number of picture elements of a color original and displays an image of the color original on a color monitor. A part of a principal subject image of the color original is specified on the color monitor. Based on the measured color density of the specified part, picture elements by which the principal subject image is formed are detected to determine a principal subject image area. By using the detected densities of picture elements included in the prinipal subject image area, at least one image characteristic value is calculated and is used with one of a plurality of previously provided exposure calculating formulas selected according to scenes into which principal subject images are classified, in order to determine the proper exposure for reproducing color images of proper color balance and density.
REFERENCES:
patent: 4371259 (1983-02-01), Howitt
patent: 4668082 (1987-05-01), Terashita et al.
patent: 4693596 (1987-09-01), Shigaki
patent: 4704026 (1987-11-01), Rauh et al.
patent: 4707120 (1987-11-01), Yamamoto
patent: 4710019 (1987-12-01), Terashita
patent: 4757351 (1988-07-01), Birgmeir
patent: 4769695 (1988-09-01), Terashita
Shigaki Takao
Terashita Takaaki
Yukawa Keiko
Fuji Photo Film Co. , Ltd.
Wintercorn Richard A.
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