METHOD FOR VISUALLY CUSTOMISING AN IDENTITY DOCUMENT COMPRISING A LATENT IMAGE

A method for visually customising an identity document comprising a latent image formed from an array of single-colour portions distributed into a series of groups of identical single-colour portions, comprises steps which involve, for each pixel of a customisation image to be formed on the latent i...

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Bibliographic Details
Main Authors MOREL, YVONNIC, GAUTIER, MICKAEL
Format Patent
LanguageEnglish
French
German
Published 21.09.2016
Subjects
COLOUR PRINTING
LINING MACHINES
PERFORMING OPERATIONS
PRINTING
PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES
STAMPS
TRANSPORTING
TYPEWRITERS
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Summary:A method for visually customising an identity document comprising a latent image formed from an array of single-colour portions distributed into a series of groups of identical single-colour portions, comprises steps which involve, for each pixel of a customisation image to be formed on the latent image, defining a segment extending over one of said groups of single-colour portions, each segment being formed from elementary areas in which shading can be generated with a level chosen from a plurality of possible shading levels so as to locally alter the appearance of the array in such a way as to reproduce, in said segment, said colour of the pixel of the customisation image, characterised in that, the portions having a dimension representing, at most, a multiple of the average dimension of these elementary areas, it involves generating, in at least some of the segments, successive levels of shading that are respectively defined by a pixel of the image to be reproduced and by at least one adjacent pixel in this image to be reproduced in a given position.
Bibliography:Application Number: EP20140809920