WO2002025599A1 - Procede destine a prevenir la contrefaçon ou l'alteration d'une surface imprimee ou gravee - Google Patents
Procede destine a prevenir la contrefaçon ou l'alteration d'une surface imprimee ou gravee Download PDFInfo
- Publication number
- WO2002025599A1 WO2002025599A1 PCT/CH2001/000560 CH0100560W WO0225599A1 WO 2002025599 A1 WO2002025599 A1 WO 2002025599A1 CH 0100560 W CH0100560 W CH 0100560W WO 0225599 A1 WO0225599 A1 WO 0225599A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- watermark
- signature
- printed
- digital watermark
- image
- Prior art date
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
- G07D7/004—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 digital security elements, e.g. information coded on a magnetic thread or strip
-
- 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
- G07D7/0054—Testing security markings invisible to the naked eye, e.g. verifying thickened lines or unobtrusive markings or alterations involving markings the properties of which are altered from original properties
- G07D7/0056—Testing security markings invisible to the naked eye, e.g. verifying thickened lines or unobtrusive markings or alterations involving markings the properties of which are altered from original properties involving markings of altered colours
Definitions
- Imperceptible means that the changes introduced are such that an individual cannot distinguish the original data from the data signed by his own senses. For example, a signed image must have exactly the same appearance as a normal image, a signed music must appear completely normal, the same for a video or any other data. The whole problem is to make a computer capable of detecting this hidden information when it escapes our senses. There are also applications where a visible watermark is acceptable or even desirable. This allows in particular to further increase the robustness and a visual check for the presence of a watermark. The principle that remains is that the watermark should not be visually disturbing.
- the watermark is printed using colors and resolutions that are invisible to the naked eye. This therefore makes it possible to protect, for example, a package without its graphics being altered, which is important for marketing reasons.
- Figure 4 illustrates the implementation of the above method using positive modulation with an industrial printing technique of offset type in the case of simultaneous printing of the watermark.
- a four-color printing 45 is carried out (for example for a packaging 40) which means that four different ink colors are used for each of the yellow masks 41, cyan 42, magenta 43 and black 44.
- the digital watermark can have a single color, it is generally desirable to use one of the colors already selected for standard printing for the watermark.
- Figure 4 shows how the different masks can then be applied.
- the watermark printing is fully integrated into the standard industrial printing chain and therefore does not incur any additional cost.
- the yellow mask can be used simultaneously for two different things: on the one hand it contains the yellow component of the image to be printed and on the other hand it contains the image of the watermark.
- the IT tools used when flashing the offset film make this integration easy.
- Color of the points Depending on the color, texture and possible patterns applied to the materials, certain colors may be more or less visible. For example, it is usual to use a yellow color for white backgrounds (separate or simultaneous positive modulation).
- Equation (2) It is also possible to obtain a negative modulation by printing a uniform color or "pierced” by the watermark. Equation (2) then becomes:
- the second case is illustrated by the block diagram of FIG. 10 where the original image is predicted from the signed image, the signed image is subtracted from the predicted image in order to restore the watermark, the bit constituting the signature is then calculated.
- a denoising filter 105 for example of the Wiener type, is used to make a prediction 106 of the original image o (k) from the signed image 101.
- the difference 102 between these two images then constitutes the watermark 107 which can be decoded 103 using the key 108 to find the bit 104 in the same way as before ( Figure 9).
- the prediction error being significantly greater than in the first case, the number of bits b coded in this way is systematically lower.
Abstract
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP01964793A EP1319219B1 (fr) | 2000-09-20 | 2001-09-17 | Procede destine a prevenir la contrefaçon ou l'alteration d'une surface imprimee ou gravee |
DK01964793.2T DK1319219T3 (da) | 2000-09-20 | 2001-09-17 | Fremgangsmåde til at forebygge efterligning eller ændring af en trykt eller graveret overflade |
EP10174049.6A EP2261867B1 (fr) | 2000-09-20 | 2001-09-17 | Procédé destiné à prévenir la contrefaçon ou l'altération d'une surface imprimée ou gravée |
DE60143487T DE60143487D1 (de) | 2000-09-20 | 2001-09-17 | Verfahren zur vorbeugung der verfälschung oder änderung von bedruckten oder gravierten flächen |
AT01964793T ATE488822T1 (de) | 2000-09-20 | 2001-09-17 | Verfahren zur vorbeugung der verfälschung oder änderung von bedruckten oder gravierten flächen |
US10/380,914 US7684088B2 (en) | 2000-09-20 | 2001-09-17 | Method for preventing counterfeiting or alteration of a printed or engraved surface |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH1832/00 | 2000-09-20 | ||
CH18322000 | 2000-09-20 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2002025599A1 true WO2002025599A1 (fr) | 2002-03-28 |
Family
ID=4566438
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/CH2001/000560 WO2002025599A1 (fr) | 2000-09-20 | 2001-09-17 | Procede destine a prevenir la contrefaçon ou l'alteration d'une surface imprimee ou gravee |
Country Status (8)
Country | Link |
---|---|
US (1) | US7684088B2 (fr) |
EP (2) | EP1319219B1 (fr) |
CN (1) | CN1252653C (fr) |
AT (1) | ATE488822T1 (fr) |
DE (1) | DE60143487D1 (fr) |
DK (1) | DK1319219T3 (fr) |
ES (1) | ES2356598T3 (fr) |
WO (1) | WO2002025599A1 (fr) |
Cited By (8)
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---|---|---|---|---|
US6899475B2 (en) | 2002-01-30 | 2005-05-31 | Digimarc Corporation | Watermarking a page description language file |
EP1690697A1 (fr) | 2005-02-15 | 2006-08-16 | Alpvision SA | Procédé pour appliquer une marque optiquement invisible sur un support de données |
US7246239B2 (en) | 2001-01-24 | 2007-07-17 | Digimarc Corporation | Digital watermarks for checking authenticity of printed objects |
US7974495B2 (en) | 2002-06-10 | 2011-07-05 | Digimarc Corporation | Identification and protection of video |
US7991184B2 (en) | 1995-05-08 | 2011-08-02 | Digimarc Corporation | Apparatus to process images and video |
WO2020173693A1 (fr) | 2019-02-28 | 2020-09-03 | Sicpa Holding Sa | Procédé d'authentification d'une marque induite magnétiquement avec un dispositif portable |
WO2022049025A1 (fr) | 2020-09-02 | 2022-03-10 | Sicpa Holding Sa | Marquage de sécurité, procédé et dispositif de lecture du marquage de sécurité, document de sécurité marqué avec le marquage de sécurité, et procédé et système de vérification dudit document de sécurité |
EP4328879A1 (fr) | 2022-08-26 | 2024-02-28 | Alpvision SA | Systèmes et procédés de prédiction de la détectabilité d'authentification d'articles contrefaits |
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US7644281B2 (en) * | 2004-09-27 | 2010-01-05 | Universite De Geneve | Character and vector graphics watermark for structured electronic documents security |
EP1691539A1 (fr) * | 2005-02-15 | 2006-08-16 | European Central Bank | Motif de sécurité bidimentionel pouvant être authentifié avec un traitement du signal à une dimension |
KR100831601B1 (ko) * | 2005-10-26 | 2008-05-23 | 이항경 | 일련 번호 및 비밀 번호를 이용한 통신 네트워크상에서의상품 진위 여부 확인 방법 및 시스템 |
CN101089807A (zh) * | 2006-06-16 | 2007-12-19 | 光宝科技股份有限公司 | 浮水印打印方法及打印装置 |
US8770625B1 (en) * | 2006-12-22 | 2014-07-08 | Hewlett-Packard Development Company, L.P. | Anti-counterfeiting articles |
DE102008012426A1 (de) * | 2007-10-31 | 2009-05-07 | Bundesdruckerei Gmbh | Sicherung von Dokumenten |
US8152073B2 (en) * | 2008-04-30 | 2012-04-10 | Polyonics, Inc. | Method and apparatus for the detection of counterfeiting |
US9749607B2 (en) | 2009-07-16 | 2017-08-29 | Digimarc Corporation | Coordinated illumination and image signal capture for enhanced signal detection |
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US10424038B2 (en) | 2015-03-20 | 2019-09-24 | Digimarc Corporation | Signal encoding outside of guard band region surrounding text characters, including varying encoding strength |
EP3103061B1 (fr) | 2014-02-04 | 2024-04-03 | Thymaris Ltd. | Procédé et appareil permettant de générer et stocker un profil d'imperfection individuel lié à un article original ainsi que procédé et appareil permettant de déterminer un état d'authentification d'un article suspect |
FR3018130B1 (fr) * | 2014-03-03 | 2016-03-25 | Advanced Track & Trace | Procede de marquage d'une matrice holographique et matrice holographique ainsi obtenue |
US10783601B1 (en) | 2015-03-20 | 2020-09-22 | Digimarc Corporation | Digital watermarking and signal encoding with activable compositions |
WO2016153936A1 (fr) | 2015-03-20 | 2016-09-29 | Digimarc Corporation | Filigranage numérique et masquage de données à l'aide d'éléments absorbant dans une bande étroite |
FR3035819B1 (fr) | 2015-05-07 | 2021-04-30 | Honnorat Rech & Services | Papier authentifiable smartphone |
EP3311336B2 (fr) | 2015-06-18 | 2023-02-01 | Thymaris Ltd. | Caractéristique d'authentification dans un code à barres |
CN106682912B (zh) | 2015-11-10 | 2021-06-15 | 艾普维真股份有限公司 | 3d结构的认证方法 |
US10896307B2 (en) | 2017-11-07 | 2021-01-19 | Digimarc Corporation | Generating and reading optical codes with variable density to adapt for visual quality and reliability |
US11062108B2 (en) | 2017-11-07 | 2021-07-13 | Digimarc Corporation | Generating and reading optical codes with variable density to adapt for visual quality and reliability |
US10872392B2 (en) | 2017-11-07 | 2020-12-22 | Digimarc Corporation | Generating artistic designs encoded with robust, machine-readable data |
EP3686027B1 (fr) | 2019-01-27 | 2021-07-14 | U-NICA Systems AG | Procédé d'impression d'indices d'authentification par une impression en demi-teinte modulée en amplitude |
PT115571B (pt) | 2019-06-08 | 2021-06-07 | Incm Imprensa Nac Casa Da Moeda S A | Método para a validação da autenticidade de uma imagem presente num objeto, objeto com nível de segurança intensificado e o seu método de preparo, aparelho computacional, programas de computador e meio de leitura adaptados |
US11636565B1 (en) | 2019-07-24 | 2023-04-25 | Digimarc Corporation | Tamper detection arrangements, and point of sales systems employing same |
EP3859597A1 (fr) | 2020-01-31 | 2021-08-04 | U-NICA Systems AG | Procédé mis en uvre par ordinateur et système d'identification de surface comprenant des échelles |
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-
2001
- 2001-09-17 WO PCT/CH2001/000560 patent/WO2002025599A1/fr active Application Filing
- 2001-09-17 US US10/380,914 patent/US7684088B2/en active Active
- 2001-09-17 ES ES01964793T patent/ES2356598T3/es not_active Expired - Lifetime
- 2001-09-17 DK DK01964793.2T patent/DK1319219T3/da active
- 2001-09-17 AT AT01964793T patent/ATE488822T1/de active
- 2001-09-17 CN CNB018188141A patent/CN1252653C/zh not_active Expired - Lifetime
- 2001-09-17 EP EP01964793A patent/EP1319219B1/fr not_active Expired - Lifetime
- 2001-09-17 DE DE60143487T patent/DE60143487D1/de not_active Expired - Lifetime
- 2001-09-17 EP EP10174049.6A patent/EP2261867B1/fr not_active Expired - Lifetime
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EP0961239A2 (fr) * | 1998-04-16 | 1999-12-01 | Digimarc Corporation | Formation de filigranes numériques et de billets de banque |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7991184B2 (en) | 1995-05-08 | 2011-08-02 | Digimarc Corporation | Apparatus to process images and video |
US7246239B2 (en) | 2001-01-24 | 2007-07-17 | Digimarc Corporation | Digital watermarks for checking authenticity of printed objects |
US6899475B2 (en) | 2002-01-30 | 2005-05-31 | Digimarc Corporation | Watermarking a page description language file |
US7974495B2 (en) | 2002-06-10 | 2011-07-05 | Digimarc Corporation | Identification and protection of video |
EP1690697A1 (fr) | 2005-02-15 | 2006-08-16 | Alpvision SA | Procédé pour appliquer une marque optiquement invisible sur un support de données |
US7965862B2 (en) | 2005-02-15 | 2011-06-21 | Alpvision Sa | Method to apply an invisible mark on a media |
WO2020173693A1 (fr) | 2019-02-28 | 2020-09-03 | Sicpa Holding Sa | Procédé d'authentification d'une marque induite magnétiquement avec un dispositif portable |
US11823003B2 (en) | 2019-02-28 | 2023-11-21 | Sicpa Holding Sa | Method for authenticating a magnetically induced mark with a portable device |
WO2022049025A1 (fr) | 2020-09-02 | 2022-03-10 | Sicpa Holding Sa | Marquage de sécurité, procédé et dispositif de lecture du marquage de sécurité, document de sécurité marqué avec le marquage de sécurité, et procédé et système de vérification dudit document de sécurité |
EP4328879A1 (fr) | 2022-08-26 | 2024-02-28 | Alpvision SA | Systèmes et procédés de prédiction de la détectabilité d'authentification d'articles contrefaits |
WO2024042240A1 (fr) | 2022-08-26 | 2024-02-29 | Alpvision S.A. | Systèmes et procédés de prédiction de la détectabilité d'authentification d'articles contrefaits |
Also Published As
Publication number | Publication date |
---|---|
DK1319219T3 (da) | 2011-02-21 |
EP2261867A2 (fr) | 2010-12-15 |
US7684088B2 (en) | 2010-03-23 |
EP2261867A3 (fr) | 2012-12-19 |
ATE488822T1 (de) | 2010-12-15 |
ES2356598T3 (es) | 2011-04-11 |
CN1475001A (zh) | 2004-02-11 |
CN1252653C (zh) | 2006-04-19 |
DE60143487D1 (de) | 2010-12-30 |
US20040013285A1 (en) | 2004-01-22 |
EP1319219A1 (fr) | 2003-06-18 |
EP1319219B1 (fr) | 2010-11-17 |
EP2261867B1 (fr) | 2018-07-18 |
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