ES2309771T3 - Sintesis basada en modelo de imagenes de moare de bandas para autentificar documentos de seguridad y productos valiosos. - Google Patents

Sintesis basada en modelo de imagenes de moare de bandas para autentificar documentos de seguridad y productos valiosos. Download PDF

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Publication number
ES2309771T3
ES2309771T3 ES05755119T ES05755119T ES2309771T3 ES 2309771 T3 ES2309771 T3 ES 2309771T3 ES 05755119 T ES05755119 T ES 05755119T ES 05755119 T ES05755119 T ES 05755119T ES 2309771 T3 ES2309771 T3 ES 2309771T3
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ES
Spain
Prior art keywords
bands
layer
image
grid
moire
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Lifetime
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ES05755119T
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English (en)
Inventor
Roger D Hersch
Sylvain Chosson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ECOLE POLYTECH
Ecole Polytechnique Federale de Lausanne EPFL
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ECOLE POLYTECH
Ecole Polytechnique Federale de Lausanne EPFL
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Publication of ES2309771T3 publication Critical patent/ES2309771T3/es
Anticipated expiration legal-status Critical
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Classifications

    • 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
    • B42D25/342—Moiré effects
    • 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
    • G07D7/202—Testing patterns thereon using pattern matching
    • G07D7/207—Matching patterns that are created by the interaction of two or more layers, e.g. moiré patterns

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Credit Cards Or The Like (AREA)
  • Processing Or Creating Images (AREA)
  • Facsimile Image Signal Circuits (AREA)
  • Collating Specific Patterns (AREA)

Abstract

Procedimiento para autenticar dispositivos expuestos a intentos de falsificación, seleccionándose dichos dispositivos de entre el conjunto de documentos de seguridad y productos valiosos, comprendiendo el procedimiento las etapas que consisten en: a) superponer un dispositivo con una capa base que comprende una rejilla de bandas base y una capa de revelación que comprende una rejilla de líneas de revelación, produciendo así una capa de moaré que comprende una imagen de moaré de bandas y b) comparar dicha imagen de moaré de bandas con una imagen de moaré de bandas de referencia y, dependiendo del resultado de la comparación, aceptar o rechazar el dispositivo, en el que las distribuciones respectivas de la capa de rejilla de bandas base, la capa de rejilla de líneas de revelación y la capa de imagen de moaré de bandas están relacionadas según un modelo de distribución de imagen de moaré de bandas, permitiendo dicho modelo de distribución de imagen de moaré de bandas seleccionar la distribución de dos de dichas tres capas y obtener la tercera capa mediante cálculo.
ES05755119T 2004-06-30 2005-06-23 Sintesis basada en modelo de imagenes de moare de bandas para autentificar documentos de seguridad y productos valiosos. Expired - Lifetime ES2309771T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US10/879,218 US7751608B2 (en) 2004-06-30 2004-06-30 Model-based synthesis of band moire images for authenticating security documents and valuable products

Publications (1)

Publication Number Publication Date
ES2309771T3 true ES2309771T3 (es) 2008-12-16

Family

ID=35355705

Family Applications (1)

Application Number Title Priority Date Filing Date
ES05755119T Expired - Lifetime ES2309771T3 (es) 2004-06-30 2005-06-23 Sintesis basada en modelo de imagenes de moare de bandas para autentificar documentos de seguridad y productos valiosos.

Country Status (8)

Country Link
US (2) US7751608B2 (es)
EP (1) EP1765602B1 (es)
CN (1) CN100503267C (es)
AT (1) ATE399097T1 (es)
CA (1) CA2591756C (es)
DE (1) DE602005007742D1 (es)
ES (1) ES2309771T3 (es)
WO (1) WO2006006063A1 (es)

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Also Published As

Publication number Publication date
CA2591756A1 (en) 2006-01-19
WO2006006063A1 (en) 2006-01-19
EP1765602A1 (en) 2007-03-28
US20060129489A1 (en) 2006-06-15
EP1765602B1 (en) 2008-06-25
US20060003295A1 (en) 2006-01-05
US7710551B2 (en) 2010-05-04
CN101010204A (zh) 2007-08-01
CA2591756C (en) 2013-02-19
ATE399097T1 (de) 2008-07-15
CN100503267C (zh) 2009-06-24
US7751608B2 (en) 2010-07-06
DE602005007742D1 (de) 2008-08-07

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