Method and system for content retrieval based on rate-coverage optimization
US9836535B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 25, 2015 |
| Grant date | Dec 5, 2017 |
| Priority date | — |
| Expiry date | Aug 12, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F16/783
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A content retrieval method including: extracting a plurality of fingerprints including a plurality of video fingerprints and audio fingerprints from contents stored in a content database; determining representative video fingerprints of the video frames and representative audio fingerprints of the audio sequences; determining a data rate indicating a storage limitation and a coverage indicating a number of searching results to be returned; storing selected representative video fingerprints and representative audio fingerprints based on the storage limitation indicated by the data rate in a fingerprint database; receiving a query containing at least one of video data and audio data submitted by a user; extracting at least one query fingerprint representing the query; determining a number of fingerprints most matching the query fingerprint based on the coverage to generate search results indicating matching contents represented by the number of most matching fingerprints; and returning the search results to the user.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.