Type of Publication

Patent

Date:

3 /

2021

Status

Pending

Systems for encoding, decoding and validing the integrity of a security document with a steeganography encoded image and methods, security document, computer devices, computer programs and associated reading media

Featured in:

Applicants: Imprensa Nacional-Casa da Moeda and University of Coimbra

Authors:

Nuno Gonçalves and Farhad Shadmand

Abstract

The invention comprises an encoding system for a security document with a printer-proof steganography-encoded image and a decoding and integrity validation system for a security document with a printer-proof steganography-encoded image, wherein the said systems operate based on a generator generative adversarial neural network and a discriminative generative adversarial neural network.The invention comprises an encoding method, a decoding method, security documents, computing devices, computer programs and reading means (scanner) by an associated computing device.The invention applies to image encoding in general, and is particularly useful for concealing a secret message in facial images, also called portraits, in the context of security documents with a printer-proof steganography-encoded image-such as civil identification documents and personal machine-readable documents.

Citation
Inventors: Nuno Gonçalves and Farhad Shadman, Applicants: Imprensa Nacional-Casa da Moeda and University of Coimbra, 2021. Systems for encoding, decoding and validing the integrity of a security document with a steeganography encoded image and methods, security document, computer devices, computer programs and associated reading media. In PT117136A (Portugal), EP4064095A1 (European Patent Office). Pending

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