| 摘要 |
The invention relates in particular to a streamwise method of watermarking independent of the compression parameters used (for example type of the transform) so as to allow the reading of the watermarking inserted independently of the format of the data received. The watermarking method according to the invention consists in generating a contribution matrix MT1 in the transformation space T1, in projecting it into another domain T2 and in watermarking the data in this domain T2 on the basis of the projected matrix MT1 so as to allow a watermark reader operating in the transformed transformation space T1 to read back the inserted watermarking in the transformation space T2. The contribution matrix MT1 representing the modifications induced on the coefficients in the transformation space T1 by insertion of the watermarking cue in this same domain. |
