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Title:
ARITHMETIC DEVICE OF REFLECTION FACTOR OF COLOR PICTURE
Document Type and Number:
Japanese Patent JPS60249468
Kind Code:
A
Abstract:

PURPOSE: To obtain the reflection factor of an original picture from color separation signals by multiplying individual color separation signals by prescribed coefficients and adding the results to obtain a reflection factor signal.

CONSTITUTION: The original picture signal outputted from a photoelectric scanning part 1 is separated to analog R, G, and B color separation signals by a color separating circuit 2. These analog color separation signals are converted to digital color separation signals R, G, and B by A/D converters 3R, 3G, and 3B respectively. Digital color separation signals R, G, and B and coefficients βR, βG, and βB are multiplied in multipliers 5R, 5G, and 5B respectively, and outputs of multipliers are added by an adder 6, and the reflection factor signal is outputted from the adder 6. This reflection factor can be used as supplementary data of color separation signals in case of picture processing.


Inventors:
MIYAZAKI KOUICHI
ISHIDA YOSHIHIRO
Application Number:
JP10590384A
Publication Date:
December 10, 1985
Filing Date:
May 25, 1984
Export Citation:
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Assignee:
FUJI XEROX CO LTD
International Classes:
H04N1/60; G03F3/08; H04N1/40; H04N1/46; (IPC1-7): G03F3/08; H04N1/40
Domestic Patent References:
JPS5877965U1983-05-26
JPS5651184A1981-05-08
Attorney, Agent or Firm:
Takio Sumiyoshi (2 outside)