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.:
Date of Patent:
Jul. 13, 2021
Filed:
Jan. 30, 2020
Applicant:
3m Innovative Properties Company, St. Paul, MN (US);
Inventors:
Fumio Karasawa, Tokyo, JP;
Andreas M. Geldmacher, Dormagen, DE;
Guruprasad Somasundaram, St. Paul, MN (US);
Assignee:
3M INNOVATIVE PROPERTIES COMPANY, St. Paul, MN (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G01B 11/14 (2006.01); G01N 21/27 (2006.01); G01N 21/25 (2006.01); G01B 11/30 (2006.01); H04N 13/246 (2018.01); G06T 7/80 (2017.01); G01N 21/55 (2014.01);
U.S. Cl.
CPC ...
G01B 11/14 (2013.01); G01B 11/30 (2013.01); G01N 21/251 (2013.01); G01N 21/274 (2013.01); G06T 7/80 (2017.01); H04N 13/246 (2018.05); G01N 2021/551 (2013.01);
Abstract
A device comprising an imaging unit for capturing an image of a target object and of an accessory. The accessory comprises a reference target object having a known retroreflective coefficient. The device also comprises a calculating unit for calculating a value of a retroreflective coefficient of the target object based on a comparison of the image of the target to the image of the accessory.