Digital image watermarking method

Details Digital image watermarking method Digital image watermarking method

G - Physics

06

T

G06T 1/00 (2006.01) G06T 9/00 (2006.01) H04L 9/32 (2006.01) H04N 7/26 (2006.01)

Patent

CA 2374323

A digital image watermarking method is provided. The digital image watermarking method includes the steps of combining host image data sets and signature image data sets by a predetermined method for combining the sets to be linearly independent, and generating a watermarked image and a key from the combined image. A signature image embedded in a combined image is similar to the combined image in view of existence and durability.

L'invention concerne un procédé de façonnage en filigrane d'une image numérique. Ce procédé de façonnage en filigrane d'une image numérique consiste tout d'abord à combiner des ensembles de données images hôtes et des ensembles de données images de la signature, selon un processus prédéterminé permettant de combiner ces ensembles afin qu'ils soient linéairement indépendants. Ce procédé consiste ensuite à générer une image filigranée et une clé, à partir de l'image combinée, une image de la signature imbriquée dans une image combinée étant identique à ladite image combinée, que ce soit du point de vue de son existence ou de sa durée de vie.

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