System and method for image authentication
US8483427B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 28, 2010 |
| Grant date | Jul 9, 2013 |
| Priority date | — |
| Expiry date | Dec 8, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2201/0201
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In accordance with an embodiment, a method of authenticating images includes electronically receiving an anchor image and a query image, performing a feature point extraction of an anchor image, and performing a feature point extraction of a query image. The method also includes clustering feature points of the anchor image and feature points of the query image, where clustering includes determining matching feature points, determining outlier feature points, and excluding outlier feature points. Whether the anchor image is similar to the query image is determined based on a distance between the feature points of the anchor image and the feature points of the query image. If the anchor image is similar to the query image, possible tampered areas of the query image based on the outlier feature points are identified.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.