Endpoint based video fingerprinting
US9135674B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 27, 2013 |
| Grant date | Sep 15, 2015 |
| Priority date | — |
| Expiry date | Mar 20, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V20/48
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method and system generates and compares fingerprints for videos in a video library. The video fingerprints provide a compact representation of the temporal locations of discontinuities in the video that can be used to quickly and efficiently identify video content. Discontinuities can be, for example, shot boundaries in the video frame sequence or silent points in the audio stream. Because the fingerprints are based on structural discontinuity characteristics rather than exact bit sequences, visual content of videos can be effectively compared even when there are small differences between the videos in compression factors, source resolutions, start and stop times, frame rates, and so on. Comparison of video fingerprints can be used, for example, to search for and remove copyright protected videos from a video library. Furthermore, duplicate videos can be detected and discarded in order to preserve storage space.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.