Image data encoding system and image inputting apparatus

H - Electricity – 04 – L

Patent

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Details

H04L 9/32 (2006.01) G06T 1/00 (2006.01) G06T 1/20 (2006.01) H04N 1/32 (2006.01) H04N 1/44 (2006.01) H04N 7/26 (2006.01) H04N 7/30 (2006.01)

Patent

CA 2227381

An image data encoding system is disclosed, that comprises a discrete cosine transforming means for discrete-cosine transforming the original image, an electronic watermark data embedding means for embedding the electronic watermark data in the data that has been transformed by the discrete cosine transforming means, and a data selecting means for selecting the output signal of the discrete cosine transforming means or the output signal of the electronic watermark data embedding means. Another image data encoding system is also disclosed, that comprises an electronic watermark embedding means for embedding electronic watermark data selected from a plurality of types of electronic watermark data to the digital image data, wherein at least one of the plurality of types of electronic watermark data is predetermined electronic watermark data that does not affect the digital image data even if the electronic watermark data is embedded in the digital image data.

On a présenté un système de codage des images comportant un module de transformation de l'image originale en cosinus discrets, un module d'intégration électronique de données filigranées aux données générées par le module de transformation en cosinus discrets, et un module qui sélectionne le signal de sortie du module de transformation en cosinus discrets ou celui du module d'intégration électronique des données filigranées. Un autre système de codage des images est présenté. Il comporte un module d'intégration électronique à des données d'image de données filigranées choisies parmi divers types de données. Un de ces types de données, au moins, est prédéterminé; il s'agit de données qui n'altèrent pas les données d'images numériques, même si elles y sont intégrées.

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