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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 12121133 B1

PDFFull Text
Date of Patent:
Oct. 22, 2024

Filed:

Dec. 17, 2019

Method for determining a greyness level of a strand of hair

Applicant:

Henkel Ag & Co. Kgaa, Duesseldorf, DE;

Inventors:

Hans Georg Knuebel, Duesseldorf, DE;

Lucile Bonnin, Duesseldorf, DE;

Astrid Kroos, Monheim, DE;

Assignee:

HENKEL AG & CO. KGAA, Duesseldorf, NY (US);

Attorney:

Lorenz & Kopf, LLP

Primary Examiner:

Eric Rush

Int. Cl.
CPC ...
G06K 9/38 (2006.01); A45D 44/00 (2006.01); A61B 5/00 (2006.01); A61B 5/103 (2006.01); G01J 3/46 (2006.01); G01J 3/52 (2006.01); G06T 5/40 (2006.01); G06T 5/92 (2024.01); G06T 7/00 (2017.01); G06T 7/11 (2017.01); G06T 7/90 (2017.01); G06V 10/28 (2022.01); G06V 10/50 (2022.01); G06V 10/56 (2022.01);
U.S. Cl.
CPC ...
A45D 44/005 (2013.01); A61B 5/1034 (2013.01); A61B 5/448 (2013.01); G01J 3/46 (2013.01); G01J 3/52 (2013.01); G06T 5/40 (2013.01); G06T 5/92 (2024.01); G06T 7/0002 (2013.01); G06T 7/11 (2017.01); G06T 7/90 (2017.01); G06V 10/28 (2022.01); G06V 10/50 (2022.01); G06V 10/56 (2022.01); A45D 2044/007 (2013.01); G06T 2207/10024 (2013.01); G06T 2207/30196 (2013.01);
Abstract

A method for determining a greyness level of a strand of hair and a system adapted to implement this method are provided. First, an image of the strand of hair representing it according to a predefined representation standard is obtained. The image comprises a portion representing the strand of hair with pixels. Then, for each pixel of the portion, a luminance value is determined. After that an amount of pixels in the portion for which the determined luminance value is above a threshold luminance value is determined. Finally, the greyness level of the strand of hair is determined by estimating a ratio of the determined amount of pixels over a total amount of pixels in the portion.

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