Video content-based retrieval
US9361523B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 21, 2010 |
| Grant date | Jun 7, 2016 |
| Priority date | — |
| Expiry date | Mar 12, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2210/00
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method and system for video-content based retrieval is described. A query video depicting an activity is processed using interest point selection to find locations in the video that are relevant to that activity. A set of spatio-temporal descriptors such as self-similarity and 3-D SIFT are calculated within a local neighborhood of the set of interest points. An indexed video database containing videos similar to the query video is searched using the set of descriptors to obtain a set of candidate videos. The videos in the video database are indexed hierarchically using a vocabulary tree or other hierarchical indexing mechanism.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.