Controlled authentication of physical objects
US10614302B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 19, 2017 |
| Grant date | Apr 7, 2020 |
| Priority date | — |
| Expiry date | Nov 7, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V30/418
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A physical object is scanned and a digital image of the object is generated from the scan. At least one subset of the image, known as an “authentication region” is selected. A plurality of feature vectors, arising from the physical structure of the object, are extracted from certain locations of interest within an authentication region and combined to generate a unique identifier or “digital fingerprint” for that object. Preferably, authentication regions for feature vector extraction are automatically selected by a software process. To identify or authenticate an object, a system may compare a digital fingerprint of an object to digital fingerprints previously stored in a database. Digital fingerprint data may specify a set of features (also termed “locations of interest”) which may be referenced in the creation of a “fingerprint template” which is a template of certain locations of interest and/or attributes selected for authenticating a particular class of objects.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.