CPC G06V 20/80 (2022.01) [G06K 15/1836 (2013.01); G06K 15/1881 (2013.01); H04L 9/3278 (2013.01); H04N 1/0087 (2013.01); H04N 1/00838 (2013.01); H04N 1/32251 (2013.01); H04N 1/32256 (2013.01); H04N 1/32272 (2013.01); H04N 1/32352 (2013.01); G06T 2201/0051 (2013.01); G06V 20/95 (2022.01); H04L 9/50 (2022.05); H04N 2201/3235 (2013.01); H04N 2201/3281 (2013.01)] | 14 Claims |
1. A method for producing security elements in an image which are not visible to the human eye and which cannot be copied,
in particular for checking the authenticity of images,
the image being imaged by means of a halftone,
the halftone consisting of individual image dots arranged adjacent to each other,
comprising the steps that
at least one field having a random geometric shape or freeform is defined in the image/the halftone,
wherein, by means of manipulation of the entire field, an encrypted information that cannot be copied is stored for comparison with at least one database and
a serial number is displayed by means of contours formed in the halftone.
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