Watermark decoding via spectral analysis of pixel spacing
US8451501B2 · kind B2 · utility
2Cited by
3References
23Claims
0Family size
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Key dates
| Filing date | Dec 13, 2010 |
| Grant date | May 28, 2013 |
| Priority date | — |
| Expiry date | Nov 9, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2201/0051
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Provided are methods, apparatus and systems related to watermark decoding via spectral analysis of an image. According to one exemplary method, spectral analysis is performed to decode a watermark within an image, where the pixel spacing associated with the image was modulated to encode the watermark.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.