Determination of a segmentation of a digital signal for inserting watermarking signals and the associated insertion
US6819774B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 8, 2001 |
| Grant date | Nov 16, 2004 |
| Priority date | — |
| Expiry date | Oct 16, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N2201/327
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The invention concerns a method of determining a segmentation into distinct regions of a set of coefficients representing at least part of an image (IM) in order to insert a set of watermarking signals with a predetermined cardinal, characterized in that it includes the steps of:generating (E2) a set of acceptable segmentations,calculating (E3), for each acceptable segmentation, a probability of error on the detection of the watermarking signals inserted in said each acceptable segmentation, andselecting (E3) a segmentation in the set of acceptable segmentations, by minimizing, on all the acceptable segmentations, the probability of error subject to a constraint on the cardinal of the regions of the selected segmentation, with respect to the cardinal (C) of said set of watermarking signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.