Information processing apparatus, information processing and program
US9690978B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 12, 2014 |
| Grant date | Jun 27, 2017 |
| Priority date | — |
| Expiry date | Sep 12, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG07D11/22
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A time difference measurement system includes: a first face detection unit for detecting face areas from images photographed by first camera and that slices them as face images; a first face feature extraction unit for extracting first face feature amounts from the face images, and a memory that stores the first face feature amounts in association with shooting time instants. The system includes, for a second camera, an analogous second face detection unit, a second overlap deletion unit and a second face feature extraction unit. The system includes: a face collation unit for collating the second face feature amounts with the first face values; and a time difference calculation unit for calculating time difference between the first and second shooting time instants. The system further includes at least one of first and second overlap deletion units for comparing a plurality of face images sliced from different frames.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.