Method and arrangement for determining the color-type of a test

Details Method and arrangement for determining the color-type of a test Method and arrangement for determining the color-type of a test

1998-03-12

1999-09-28

Evans, F. L.

Optics: measuring and testing

By shade or color

356421, G01J 352

Patent

active

059597364

ABSTRACT:
The invention concerns a method of determining the color-type of a test subject, wherein a selection is made on the basis of a mixed color according to the amount of primary color portions present therein. The color-type of the test subject is determined several times in a plurality of steps in each of which the color comprising different primary color portions is used in at least three graduations or shades determined in each case in dependence on the preceding step. The invention also concerns an arrangement for determining the color-type of a test subject, said arrangement comprising a device for preparing or generating different shades of the mixed color with different primary color portions and a keyboard for inputting and a computer for evaluating the selection of the desired shade.

REFERENCES:
patent: 4258478 (1981-03-01), Scott et al.
patent: 4681546 (1987-07-01), Hart
patent: 4909632 (1990-03-01), McFarlane
patent: 5311293 (1994-05-01), MacFarlane

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