Teresa S Adams

US Patent:

20210106122, Apr 15, 2021

Filed:

Dec 18, 2020

Appl. No.:

17/127767

Inventors:

- Chicago IL, US
Teresa Perkins Adams - Chicago IL, US
Christopher Byrne - Chicago IL, US
Elizabeth Christie - Chicago IL, US

International Classification:

A45D 44/00
G05B 17/02

Abstract:

A system and method is provided for hair dye color conversion in which a hair dye color mixture of one manufacture is matched and reproduced using a hair dye color mixture of another manufacture. The system and method duplicates a resultant hair color from a hair dye color mixture that was created using hair dye colors of a first hair dye color line using a different hair dye color mixture that was created using hair dye colors of a second hair dye color line. The system and method applies a modified Kubelka-Munk transformation of RGB values to the mathematical RGB data of the multiple hair dye colors for the first manufacturer color line, multiplies the modified KM transformed values of the multiple hair dye colors for the first manufacturer color line by their respective percentages and then summing them, and retransforms the summed modified KM transformed values of the multiple hair dye colors back into mathematical RGB values in the original RGB color space. Additionally, the system and method apply a correction factor to the retransformed mathematical RGB values that corrects for RGB errors, wherein the correction factor employs a regression algorithm.