US 12,243,370 B2
Means for using microstructure of materials surface as a unique identifier
Celine Di Venuto Dayer, V, Les Paccots (CH); Martin Kutter, Remaufens (CH); and Frederic Jordan, Les Paccots (CH)
Assigned to ALPVISION S.A., Vevey (CH)
Filed by ALPVISION S.A., Vevey (CH)
Filed on Aug. 16, 2024, as Appl. No. 18/807,484.
Application 18/807,484 is a continuation of application No. 18/333,874, filed on Jun. 13, 2023, granted, now 12,094,286.
Application 18/333,874 is a continuation of application No. 17/182,845, filed on Feb. 23, 2021, granted, now 11,721,153, issued on Aug. 8, 2023.
Application 17/182,845 is a continuation of application No. 16/402,998, filed on May 3, 2019, granted, now 10,964,010, issued on Mar. 30, 2021.
Application 16/402,998 is a continuation of application No. 15/622,946, filed on Jun. 14, 2017, granted, now 10,332,247, issued on Jun. 25, 2019.
Application 15/622,946 is a continuation of application No. 15/193,769, filed on Jun. 27, 2016, granted, now 9,710,902, issued on Jul. 18, 2017.
Application 15/193,769 is a continuation of application No. 14/959,803, filed on Dec. 4, 2015, granted, now 9,390,345, issued on Jul. 12, 2016.
Application 14/959,803 is a continuation of application No. 13/471,185, filed on May 14, 2012, granted, now 9,208,394, issued on Dec. 8, 2015.
Prior Publication US 2024/0420534 A1, Dec. 19, 2024
Int. Cl. G06K 9/00 (2022.01); G06T 7/00 (2017.01); G06V 10/24 (2022.01); G06V 10/75 (2022.01); G06V 20/66 (2022.01); G06V 20/80 (2022.01); G06V 30/24 (2022.01); G06V 40/12 (2022.01); G07D 7/2033 (2016.01); H04N 23/56 (2023.01); G04B 47/00 (2006.01)
CPC G07D 7/2033 (2013.01) [G06T 7/0004 (2013.01); G06V 10/242 (2022.01); G06V 10/7515 (2022.01); G06V 20/66 (2022.01); G06V 20/80 (2022.01); G06V 30/248 (2022.01); G06V 30/2504 (2022.01); G06V 40/1371 (2022.01); H04N 23/56 (2023.01); G04B 47/00 (2013.01); G06T 2207/30176 (2013.01)] 30 Claims
OG exemplary drawing
 
1. A method of object authentication, the method comprising the steps of:
capturing, with an imaging device, one or more images of a surface of a candidate object to be authenticated, the surface comprising a microstructure pattern area, the microstructure pattern having been shaped by at least one process selected from the group consisting of: stamping, engraving, brushing, chemical etching, sanding, milling, spinning, drilling, embossing, thermoforming, machining, molding, and printing;
displaying, on a screen of the imaging device, the one or more captured images of the candidate object and an overlay to aid an end user operator of the imaging device to manually position the imaging device relative to the candidate object according to the overlay, so that at least one of the captured images shows the microstructure pattern area on the candidate object surface;
extracting, from the at least one captured image positioned according to the overlay, a digital representation of the microstructure pattern on the candidate object surface;
transmitting to an authentication server, the extracted digital representation of the candidate object surface microstructure pattern;
comparing, by the authentication server, the extracted digital representation of the candidate object surface microstructure pattern to a reference digital representation;
receiving, from the authentication server, a positive or negative authentication result whether the extracted digital representation of the candidate object microstructure pattern matches a reference digital representation;
displaying on the screen a message to alert the end user operator according to the positive or negative authentication result.