Method to display images with metameric jamming to prevent...

H - Electricity – 04 – N

Patent

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Details

H04N 9/31 (2006.01) H04N 5/913 (2006.01)

Patent

CA 2678867

Method to display an image using four or more primaries having different spectral distributions that are distributed into three groups of primaries, wherein, in a visual color space, all primaries belonging to the same group have the same visual color and are metamehc. Each image being got from a combination of three primary images and each primary image being associated with each visual color of a group, the different primaries of each group are spatially or sequentially distributed over the primary image associated with this group, then allowing an efficient anti-copy protection based on metamerization of images, without any supplemental video processing.

L'invention concerne un procédé permettant d'afficher une image à l'aide de quatre primaires ou plus ayant différentes distributions spectrales qui sont réparties en trois groupes de primaires, dans lequel, dans un espace de couleur visuelle, toutes les primaires appartenant au même groupe ont la même couleur visuelle et sont métamères. Chaque image obtenue à partir d'une combinaison de trois images primaires et chaque image primaire étant associée à chaque couleur visuelle d'un groupe, les différentes primaires de chaque groupe sont distribuées dans l'espace ou en séquence sur l'image primaire associée à ce groupe, permettant ainsi une protection anti-copie efficace sur la base d'une métamérisation d'image sans aucun traitement vidéo supplémentaire.

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