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1. (WO2019064177) COMPUTER METHOD AND SYSTEM FOR GENERATING IMAGES WITH ENCODED INFORMATION, IMAGES OBTAINED BY THIS METHOD AND IMAGE READING METHOD AND SYSTEM
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Pub. No.: WO/2019/064177 International Application No.: PCT/IB2018/057411
Publication Date: 04.04.2019 International Filing Date: 25.09.2018
IPC:
G06T 1/00 (2006.01) ,H04N 1/32 (2006.01)
G PHYSICS
06
COMPUTING; CALCULATING; COUNTING
T
IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
1
General purpose image data processing
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
N
PICTORIAL COMMUNICATION, e.g. TELEVISION
1
Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
32
Circuits or arrangements for control or supervision between transmitter and receiver
Applicants:
IMPRENSA NACIONAL-CASA DA MOEDA, SA [PT/PT]; Av. António José De Almeida 1000-042 Lisboa, PT
UNIVERSIDADE DE COIMBRA [PT/PT]; Paço Das Escolas 3004-531 Coimbra, PT
Inventors:
MENDONÇA DA SILVA GONÇALVES, Nuno Miguel; PT
SANTOS PATRÃO, Bruno André; PT
MORAES VALLE CRUZ, Leandro; PT
DE ALMEIDA BARRETO, João Pedro; PT
Agent:
PEREIRA DA CRUZ, João; PT
Priority Data:
11030326.09.2017PT
Title (EN) COMPUTER METHOD AND SYSTEM FOR GENERATING IMAGES WITH ENCODED INFORMATION, IMAGES OBTAINED BY THIS METHOD AND IMAGE READING METHOD AND SYSTEM
(FR) PROCÉDÉ ET SYSTÈME INFORMATIQUE DE GÉNÉRATION D'IMAGE AVEC INFORMATION CODÉE, IMAGES AINSI OBTENUES ET PROCÉDÉ ET SYSTÈME DE LECTURE CORRESPONDANTS
(PT) MÉTODO E SISTEMA COMPUTACIONAL DE GERAÇÃO DE IMAGEM COM INFORMAÇÃO CODIFICADA, IMAGENS DELE OBTIDAS E SEU MÉTODO E SISTEMA DE LEITURA
Abstract:
(EN) The present invention belongs to the field of steganography, that is to say the encoding of (text) information in other information, for example an image. The object of the present invention is a computer method for generating at least one image containing encoded information, the method comprising the following steps: (i) associating information to be encoded with a plurality of graphic elements, each graphic element consisting in a symbol among a plurality of symbols, thus generating a pattern of graphic elements; and (ii) generating at least one image comprising at least one pattern as obtained in step (i). This method provides a robust and highly flexible way of encoding information in an image. In addition, the present invention also relates to a system associated with the claimed method, to the images obtained by the claimed method and to a method and system for reading these images.
(FR) La présente invention relève du domaine de la stéganographie, c'est-à-dire du codage d'une information (par ex., du texte) dans une autre information, telle que, par exemple, une image. La présente invention concerne un procédé informatique de génération d'au moins une image avec information codée, consistant : i) à associer une information à coder à une pluralité d’éléments graphiques, chacun de ces éléments graphiques consistant en un symbole d’une pluralité de symboles, générant ainsi un motif d’éléments graphiques, et ii) à générer au moins une image comprenant ledit au moins un motif obtenu dans l’étape i). Ce procédé permet d’obtenir un moyen robuste et hautement souple de coder une information dans une image. La présente invention concerne également un système associé audit procédé, des images obtenues à partir dudit procédé ainsi qu'un procédé et un système de lecture de ces images.
(PT) A presente invenção enquadra-se na área da esteganografia, ou seja, na codificação de uma informação (como texto) dentro de outra informação, por exemplo, uma imagem. É objeto da presente invenção um método computacional de geração de pelo menos uma imagem com informação codificada que compreende os passos de i) associar uma informação a codificar a uma pluralidade de elementos gráficos, cada um dos elementos gráficos consistindo num símbolo de uma pluralidade de símbolos, assim gerando um padrão de elementos gráficos e ii) gerar pelo menos uma imagem compreendendo pelo menos um padrão obtido a partir do passo i). Este método vem introduzir uma forma robusta e altamente flexível de codificar informação numa imagem. Adicionalmente, são também objeto da presente invenção um sistema associado ao referido método, imagens obtidas a partir do referido método bem como um método e um sistema de leitura dessas imagens.
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: Portuguese (PT)
Filing Language: Portuguese (PT)