ECSP21029086A - Sistema y método de identificación automática de documentos fotocopiados - Google Patents

Sistema y método de identificación automática de documentos fotocopiados

Info

Publication number
ECSP21029086A
ECSP21029086A ECSENADI202129086A ECDI202129086A ECSP21029086A EC SP21029086 A ECSP21029086 A EC SP21029086A EC SENADI202129086 A ECSENADI202129086 A EC SENADI202129086A EC DI202129086 A ECDI202129086 A EC DI202129086A EC SP21029086 A ECSP21029086 A EC SP21029086A
Authority
EC
Ecuador
Prior art keywords
document
obtaining
image
photocopied
documents
Prior art date
Application number
ECSENADI202129086A
Other languages
English (en)
Inventor
García David González
Utiel Armando Muñoz
Original Assignee
Sotec Consulting Sl
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sotec Consulting Sl filed Critical Sotec Consulting Sl
Publication of ECSP21029086A publication Critical patent/ECSP21029086A/es

Links

Classifications

    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
    • G07D7/00—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency
    • G07D7/003—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency using security elements
    • G07D7/0034—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency using security elements using watermarks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/32—Circuits or arrangements for control or supervision between transmitter and receiver or between image input and image output device, e.g. between a still-image camera and its memory or between a still-image camera and a printer device
    • H04N1/32101—Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title
    • H04N1/32144—Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title embedded in the image data, i.e. enclosed or integrated in the image, e.g. watermark, super-imposed logo or stamp
    • H04N1/32149—Methods relating to embedding, encoding, decoding, detection or retrieval operations
    • H04N1/32154—Transform domain methods
    • H04N1/3216—Transform domain methods using Fourier transforms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • B42D25/333—Watermarks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • B42D25/36—Identification or security features, e.g. for preventing forgery comprising special materials
    • B42D25/378—Special inks
    • B42D25/387—Special inks absorbing or reflecting ultraviolet light
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
    • G07D7/00—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency
    • G07D7/005—Testing security markings invisible to the naked eye, e.g. verifying thickened lines or unobtrusive markings or alterations
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
    • G07D7/00—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency
    • G07D7/06—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency using wave or particle radiation
    • G07D7/12—Visible light, infrared or ultraviolet radiation
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
    • G07D7/00—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency
    • G07D7/20—Testing patterns thereon
    • G07D7/2008—Testing patterns thereon using pre-processing, e.g. de-blurring, averaging, normalisation or rotation
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
    • G07D7/00—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency
    • G07D7/20—Testing patterns thereon
    • G07D7/2016—Testing patterns thereon using feature extraction, e.g. segmentation, edge detection or Hough-transformation
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
    • G07D7/00—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency
    • G07D7/20—Testing patterns thereon
    • G07D7/2075—Setting acceptance levels or parameters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/32—Circuits or arrangements for control or supervision between transmitter and receiver or between image input and image output device, e.g. between a still-image camera and its memory or between a still-image camera and a printer device
    • H04N1/32101—Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title
    • H04N1/32144—Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title embedded in the image data, i.e. enclosed or integrated in the image, e.g. watermark, super-imposed logo or stamp
    • H04N1/32149—Methods relating to embedding, encoding, decoding, detection or retrieval operations
    • H04N1/32203—Spatial or amplitude domain methods

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Toxicology (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Computer Security & Cryptography (AREA)
  • Mathematical Physics (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Editing Of Facsimile Originals (AREA)
  • Image Processing (AREA)

Abstract

Sistema y método de identificación automática de documentos fotocopiados. El método comprende: capturar (202) una imagen (112) de un documento impreso marcado (102); descifrar (204) una marca de agua digital embebida en la imagen (112), obteniendo un identificador de marca (206); recuperar, mediante consulta (208) a una base de datos (306), al menos un parámetro de calibración asociado al identificador de marca (206); aplicar (214) una transformada de Fourier discreta sobre la imagen, obteniendo una matriz de frecuencias (216); obtener (222) al menos un valor máximo de frecuencia (224) en la matriz de frecuencias (216); comparar (226) el al menos un valor máximo de frecuencia (224) con al menos un parámetro de calibración; determinar (228), en base a dicha comparación, si el documento impreso marcado (102) es un documento original (124) o un documento fotocopiado (126). El método identifica un documento fotocopiado sin la pérdida de la marca de agua digital, manteniendo la trazabilidad del documento durante toda su vida útil.
ECSENADI202129086A 2018-09-26 2021-04-23 Sistema y método de identificación automática de documentos fotocopiados ECSP21029086A (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/ES2018/070620 WO2020065101A1 (es) 2018-09-26 2018-09-26 Sistema y método de identificación automática de documentos fotocopiados

Publications (1)

Publication Number Publication Date
ECSP21029086A true ECSP21029086A (es) 2021-06-30

Family

ID=69952853

Family Applications (1)

Application Number Title Priority Date Filing Date
ECSENADI202129086A ECSP21029086A (es) 2018-09-26 2021-04-23 Sistema y método de identificación automática de documentos fotocopiados

Country Status (8)

Country Link
US (1) US11930147B2 (es)
EP (1) EP3843053A4 (es)
CO (1) CO2021003704A2 (es)
DO (1) DOP2021000047A (es)
EC (1) ECSP21029086A (es)
MX (1) MX2021003495A (es)
PE (1) PE20210825A1 (es)
WO (1) WO2020065101A1 (es)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116956168B (zh) * 2023-09-18 2024-01-02 云粒智慧科技有限公司 文本水印处理方法、装置、电子设备及存储介质

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7720249B2 (en) * 1993-11-18 2010-05-18 Digimarc Corporation Watermark embedder and reader
US7770013B2 (en) * 1995-07-27 2010-08-03 Digimarc Corporation Digital authentication with digital and analog documents
US7607016B2 (en) * 2001-04-20 2009-10-20 Digimarc Corporation Including a metric in a digital watermark for media authentication
US7519819B2 (en) * 2002-05-29 2009-04-14 Digimarc Corporatino Layered security in digital watermarking
TW564376B (en) * 2002-07-05 2003-12-01 Sunplus Technology Co Ltd Currency recognition device and the method thereof
CN104318203B (zh) * 2006-06-01 2018-04-20 先进追踪和寻踪公司 用于保护文件的方法和设备
WO2008009826A2 (fr) * 2006-07-19 2008-01-24 Advanced Track & Trace Procedes et dispositifs de securisation et d'authentification de documents
US7949175B2 (en) * 2007-01-23 2011-05-24 Xerox Corporation Counterfeit deterrence using dispersed miniature security marks
EP2639773B1 (en) 2007-06-01 2018-09-26 KBA-NotaSys SA Authentication of security documents, in particular of banknotes
US8335744B2 (en) * 2008-09-26 2012-12-18 Pitney Bowes Inc. System and method for paper independent copy detection pattern
US9922332B2 (en) * 2009-12-09 2018-03-20 Robert Sant'Anselmo Digital signatory and time stamping notary service for documents and objects
US20120043750A1 (en) * 2010-08-19 2012-02-23 Itzhak Raz System and method for the authentication of physical documents
CN102880999B (zh) * 2012-09-21 2015-01-28 吉林大学 抗打印、印刷和扫描过程的彩色图像数字水印方法
US11354917B2 (en) * 2019-07-15 2022-06-07 Idemia Identity & Security USA LLC Detection of fraudulently generated and photocopied credential documents
WO2021086837A1 (en) * 2019-10-29 2021-05-06 Woolly Labs, Inc. Dba Vouched System and methods for authentication of documents

Also Published As

Publication number Publication date
MX2021003495A (es) 2021-06-23
DOP2021000047A (es) 2021-05-31
US11930147B2 (en) 2024-03-12
PE20210825A1 (es) 2021-04-30
EP3843053A4 (en) 2021-08-25
WO2020065101A1 (es) 2020-04-02
EP3843053A1 (en) 2021-06-30
US20220038599A1 (en) 2022-02-03
CO2021003704A2 (es) 2021-07-30
BR112021005572A2 (pt) 2021-06-29

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