Method and apparatus for extracting a fingerprint of a video having a plurality of frames
US12159459B2 · kind B2 · utility
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19Claims
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Key dates
| Filing date | Aug 17, 2022 |
| Grant date | Dec 3, 2024 |
| Priority date | — |
| Expiry date | Jun 22, 2043 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/20052
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method for extracting a fingerprint of a video includes calculating 2D discrete cosine transform (DCT) coefficients from each of the plurality of frames of the video, extracting, from the 2D DCT coefficients, a coefficient having a basis satisfying at least one of up-down symmetry or left-right symmetry, and calculating a fingerprint of the video based on the extracted coefficient.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.