Facial anti-spoofing method using variances in image properties
US11314966B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 12, 2018 |
| Grant date | Apr 26, 2022 |
| Priority date | — |
| Expiry date | Oct 14, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N23/959
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Embodiments of the invention are directed to a system and methods for determining a likelihood that an image that includes a user is a spoof or fake. In some embodiments, focus values are determined for various parts of the image during a focus sweep. The focus values may represent a focus point at which a particular part of the image is sharp. In some embodiments, the focus values may be determined only for the sections of the image that correspond to a face within the image. From the focus values, the system may determine a relative depth of various parts of the image. Using the relative depths, the system may generate a rough depth map for the image. The depth map may be analyzed to determine a likelihood that the image is authentic.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.