MX2021003495A - Sistema y metodo de identificacion automatica de documentos fotocopiados. - Google Patents
Sistema y metodo de identificacion automatica de documentos fotocopiados.Info
- Publication number
- MX2021003495A MX2021003495A MX2021003495A MX2021003495A MX2021003495A MX 2021003495 A MX2021003495 A MX 2021003495A MX 2021003495 A MX2021003495 A MX 2021003495A MX 2021003495 A MX2021003495 A MX 2021003495A MX 2021003495 A MX2021003495 A MX 2021003495A
- Authority
- MX
- Mexico
- Prior art keywords
- document
- obtaining
- image
- photocopied
- digital watermark
- Prior art date
Links
- 239000011159 matrix material Substances 0.000 abstract 2
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)
- Computer Security & Cryptography (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Toxicology (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.
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 |
---|---|
MX2021003495A true MX2021003495A (es) | 2021-06-23 |
Family
ID=69952853
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
MX2021003495A MX2021003495A (es) | 2018-09-26 | 2018-09-26 | Sistema y metodo de identificacion automatica de documentos fotocopiados. |
Country Status (9)
Country | Link |
---|---|
US (1) | US11930147B2 (es) |
EP (1) | EP3843053A4 (es) |
BR (1) | BR112021005572A2 (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)
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)
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 |
US8345315B2 (en) * | 2006-06-01 | 2013-01-01 | Advanced Track And Trace | Method and device for making documents secure using unique imprint derived from unique marking variations |
CN103400059B (zh) * | 2006-07-19 | 2016-12-28 | 先进追踪和寻踪公司 | 保护和验证文件的方法和设备 |
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 |
-
2018
- 2018-09-26 BR BR112021005572-0A patent/BR112021005572A2/pt active Search and Examination
- 2018-09-26 EP EP18934980.6A patent/EP3843053A4/en active Pending
- 2018-09-26 MX MX2021003495A patent/MX2021003495A/es unknown
- 2018-09-26 WO PCT/ES2018/070620 patent/WO2020065101A1/es active Search and Examination
- 2018-09-26 US US17/277,413 patent/US11930147B2/en active Active
- 2018-09-26 PE PE2021000353A patent/PE20210825A1/es unknown
-
2021
- 2021-03-23 CO CONC2021/0003704A patent/CO2021003704A2/es unknown
- 2021-03-24 DO DO2021000047A patent/DOP2021000047A/es unknown
- 2021-04-23 EC ECSENADI202129086A patent/ECSP21029086A/es unknown
Also Published As
Publication number | Publication date |
---|---|
DOP2021000047A (es) | 2021-05-31 |
ECSP21029086A (es) | 2021-06-30 |
CO2021003704A2 (es) | 2021-07-30 |
EP3843053A1 (en) | 2021-06-30 |
WO2020065101A1 (es) | 2020-04-02 |
EP3843053A4 (en) | 2021-08-25 |
BR112021005572A2 (pt) | 2021-06-29 |
US20220038599A1 (en) | 2022-02-03 |
US11930147B2 (en) | 2024-03-12 |
PE20210825A1 (es) | 2021-04-30 |
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