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1. (WO2018177522) VIDEO WATERMARKING

Pub. No.:    WO/2018/177522    International Application No.:    PCT/EP2017/057426
Publication Date: Fri Oct 05 01:59:59 CEST 2018 International Filing Date: Thu Mar 30 01:59:59 CEST 2017
IPC: G06T 1/00
Applicants: FUNDACIÓ PER A LA UNIVERSITAT OBERTA DE CATALUNYA
Inventors: MEGÍAS JIMENEZ, David
FALLAHPOUR, Mehdi
Title: VIDEO WATERMARKING
Abstract:
A method of embedding a watermark data in a video signal to be entropy coded, wherein the video signal comprises a block with levels and the watermark data comprises a bit, the method of embedding comprising: obtaining watermark data; obtaining a value of a first watermarked level on the basis of a first level of the block by processing the value of the first watermarked level; it is also described a method of detecting a watermark in a video signal, the video signal having been entropy decoded and comprising a block with a first watermarked level and the watermark data comprising a bit, the method of detecting comprises: receiving the video signal; obtaining watermark data (wi')on the basis of the first watermarked level; determining a tampering indicator by verifying whether the obtained watermark data (wi') corresponds with a watermark data (wi) embedded by a method of embedding watermark.