Patent ID: 8477991
Filing Date: 2013-07-02
Classification: G06T

Abstract:
1. A method for watermark embedding in multi views video comprising a plurality of views captured with a plurality of cameras wherein it comprises for each view the steps of: projecting the view onto a domain invariant to the plurality of views and to intermediate synthesized view, resulting into an invariant vector, wherein said invariant domain comprises a plurality of the samples values along any line parallel to a line passing through optical centers of the cameras, said parallel lines called view invariant dimension, provided that: applying a watermarking algorithm to the invariant vector resulting into a watermarked invariant vector; subtracting the invariant vector from the watermarked invariant vector obtaining the invariant watermark vector; distributing the invariant watermark vector over the view invariant dimension resulting into a watermark signal; merging the watermark signal with the view resulting into a watermarked view.