Color discrimination system

Details Color discrimination system Color discrimination system

1999-06-30

2000-07-25

Evans, F. L.

Optics: measuring and testing

By shade or color

356406, 356425, 250226, G01J 350

Patent

active

06094272&

ABSTRACT:
A color discrimination system resistant to distance variation for displaying a color match degree using a digital display, such as a bar graph. In the color discrimination system, light reflected or transmitted from a measurement object is received, wherein the light includes at least two of R (red), G (green), and B (blue) colors. A sum total of measured light reception quantities of the colors and ratios of the respective measured light reception quantities of the colors to the sum total of measured light reception is then calculated. A comparison of the calculated values of the sum total and/or the ratios of the measured light reception quantities of the colors to the sum total with reference values of the sum total of light reception quantities and/or the ratios of the light reception quantities of the colors to the reference value of sum total for a reference object is performed, thereby discriminating between color of the measurement object and color of the reference object. The color difference indicates a match degree, and the match degree is displayed digitally in the format fitted to the sense of a human being.

REFERENCES:
patent: 4834541 (1989-05-01), Yamabe

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