Patent ID: 8553995
Filing Date: 2013-10-08
Classification: G06T

Abstract:
1. A method for embedding a binary sequence in a video sequence or a compressed video stream, said stream being able to be decomposed into several types of objects, the method being applied to at least one image contained in said video sequence and the method comprising: a) analyzing the video sequence in the compressed domain so as to define for a given compressed image at least one first type of objects or group of objects to be processed defining a zone of interest, b) generating a watermarking map defining the set of the blocks of pixels of the binary sequence that are eligible for the embedding operation, as well as two coefficients C c) excluding from the watermarking map, for the current compressed image, the blocks associated with the zone of interest, as well as those whose coefficients C abs(abs(C d) applying a digital watermarking function to each available block obtained in step c) so as to obtain a watermarked compressed stream by way of a binary sequence in the following manner: