Comparing video sequences using fingerprints
US11222209B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 23, 2019 |
| Grant date | Jan 11, 2022 |
| Priority date | — |
| Expiry date | Aug 23, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/23418
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A first sequence of video fingerprints at a first image repetition rate is compared with a second sequence of video fingerprints at a second, different image repetition rate. A converted sequence of fingerprints is generated from the first or second sequence of fingerprints by forming a combination of the values of a number of neighbouring fingerprints. The combination is a weighted average based on the temporal location of the respective neighbouring fingerprints in the first sequence of fingerprints with respect to the fingerprint in the converted sequence. A correlation is then performed between the converted sequence of fingerprints and the other sequence of fingerprints.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.