Robust watermarking for digital media
US8588461B2 · kind B2 · utility
3Cited by
8References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 16, 2011 |
| Grant date | Nov 19, 2013 |
| Priority date | — |
| Expiry date | Nov 4, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/32235
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Embedding a watermark includes organizing variation locations in a data stream, partitioning the data stream into small blocks, determining the variation of small blocks based on the variation, categorizing small blocks into big blocks, identifying those big blocks that have a threshold level of variation, and embedding into those identified big blocks a watermark value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.