Method and system of person identification by facial image
US8184914B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 10, 2011 |
| Grant date | May 22, 2012 |
| Priority date | — |
| Expiry date | Oct 10, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V40/172
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method to recognize a facial image is described. An input facial image is normalized by scaling and rotation angle using methods of eye pupil centers detection. The input facial image is further normalized by lighting intensity. Template images are obtained either by the processing of certain images taken from different face positions, or by a preliminary reconstruction of a 3D face model based on stereo-pair images. Using the 3D model template, facial images are generated at different rotation angles. Distances between the input facial image and the template image are calculated from the Discrete Cosine Transformation (DCT) features, defined by overlapped blocks of these images. The facial image is recognized based on these distances.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.