Invention Grant
- Patent Title: Method of authentication using surface paper texture
-
Application No.: US16734675Application Date: 2020-01-06
-
Publication No.: US11430234B2Publication Date: 2022-08-30
- Inventor: Johan Bergqvist , Erik Bohlin , Nikolaus Frank
- Applicant: COLOP Digital GmbH
- Applicant Address: AT Wels
- Assignee: COLOP Digital GmbH
- Current Assignee: COLOP Digital GmbH
- Current Assignee Address: AT Wels
- Agency: Fleit Intellectual Property Law
- Agent Paul D. Bianco; Stephen Bongini
- Priority: CH189/15 20150213
- Main IPC: G06V20/80
- IPC: G06V20/80 ; G07D7/2033 ; G07D7/202 ; G06V30/224 ; G06V40/40 ; G07D7/0043 ; G07D7/12

Abstract:
A method of authentication using surface paper texture includes steps of capturing a topographic pattern image of a surface of a region of interest of the paper artifact and extracting a plurality of specific features from the captured topographic pattern image. The method further identifies the location of the specific features of the paper artifact from the captured topographic pattern image. A bit map of the identified location of the specific features is generated. Then, a reference image of a reference bit map printed on the region of interest of the paper artifact is captured. Finally, the method compares the generated bit map with the captured reference bit map to generate a score. The score of the comparison determines the level of authentication. The method provides an offline method of authentication.
Public/Granted literature
- US20200250422A1 METHOD OF AUTHENTICATION USING SURFACE PAPER TEXTURE Public/Granted day:2020-08-06
Information query