Reflective decoders for use in decoding optically encoded...

G - Physics – 06 – K

Patent

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G06K 7/10 (2006.01)

Patent

CA 2621547

A reflective decoding device is provided for use in decoding an encoded image comprising a latent image encoded using at least one encoding parameter. The device comprises a substrate with a reflective surface portion having a surface topography comprising a predetermined pattern of topographical features. The predetermined pattern is configured with at least one geometric characteristic corresponding to the at least one encoding parameter so that placement of a light-transmissive sheet having the encoded image formed thereon over the predetermined pattern of topographical features allows the latent image to be viewed.

La présente invention se rapporte à un dispositif de décodage à éléments réfléchissants, qui est destiné à décoder une image codée comportant une image latente codée à l'aide d'au moins un paramètre de codage. Le dispositif selon l'invention comprend un substrat doté d'une partie surface réfléchissante, dont la topographie de surface présente un motif prédéterminé de traits topographiques. Ledit motif prédéterminé est adapté de manière qu'il possède au moins une caractéristique géométrique correspondant audit paramètre de codage, de façon que le placement d'une feuille à transmission lumineuse sur laquelle est formée l'image codée par-dessus le motif prédéterminé de traits topographiques permette la visualisation de l'image latente.

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