System for embedding data
US8135168B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 13, 2008 |
| Grant date | Mar 13, 2012 |
| Priority date | — |
| Expiry date | Sep 1, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2201/0081
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method and system for embedding data in video frames is described, the method comprising receiving marking information, representing the marking information as a 2-coordinate vector, denoted ω, where the 2-coordinates are denoted, respectively, α, β, such that ω=(α, β), providing a video frame to be marked, the video frame including a plurality of pixels, each pixel of the plurality of pixels being represented as p, where p=(x, y), x and y including coordinates of pixel p, the plurality of pixels being represented as a triad of color elements, denoted, respectively, as R, G, and B, and marking the video frame by transforming each pixel among the plurality of pixels as follows R′(p)=R(p)+R>, G′(p)=G(p)+G>, and B′(p)=B(p)+B>, where R> represents a dot product operation on p and ωR, G> represents a dot product operation on p and ωG, and B> represents a dot product operation on p and ωB.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.