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1. WO2020208116 - DOCUMENT AUTHENTICATION BY DETERMINATION OF SURFACE APPEARANCE USING CONTROLLED ILLUMINATION

Publication Number WO/2020/208116
Publication Date 15.10.2020
International Application No. PCT/EP2020/060104
International Filing Date 08.04.2020
IPC
G07D 7/17 2016.01
GPHYSICS
07CHECKING-DEVICES
DHANDLING OF COINS OR OF VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
7Testing 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
17Apparatus characterised by positioning means or by means responsive to positioning
G07D 7/12 2016.01
GPHYSICS
07CHECKING-DEVICES
DHANDLING OF COINS OR OF VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
7Testing 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
06using wave or particle radiation
12Visible light, infra-red or ultraviolet radiation
G07D 7/20 2016.01
GPHYSICS
07CHECKING-DEVICES
DHANDLING OF COINS OR OF VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
7Testing 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
20Testing patterns thereon
G07D 7/00 2016.01
GPHYSICS
07CHECKING-DEVICES
DHANDLING OF COINS OR OF VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
7Testing 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
G07D 7/121 2016.01
GPHYSICS
07CHECKING-DEVICES
DHANDLING OF COINS OR OF VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
7Testing 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
06using wave or particle radiation
12Visible light, infra-red or ultraviolet radiation
121Apparatus characterised by sensor details
CPC
B42D 25/328
BPERFORMING OPERATIONS; TRANSPORTING
42BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
DBOOKS; 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
25Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
30Identification or security features, e.g. for preventing forgery
328Diffraction gratings; Holograms
G06K 9/00456
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
KRECOGNITION OF DATA; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
9Methods or arrangements for reading or recognising printed or written characters or for recognising patterns, e.g. fingerprints
00442Document analysis and understanding; Document recognition
00456Classification of image contents, e.g. text, photographs, tables
G06K 9/00483
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
KRECOGNITION OF DATA; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
9Methods or arrangements for reading or recognising printed or written characters or for recognising patterns, e.g. fingerprints
00442Document analysis and understanding; Document recognition
00483Document matching
G06K 9/2036
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
KRECOGNITION OF DATA; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
9Methods or arrangements for reading or recognising printed or written characters or for recognising patterns, e.g. fingerprints
20Image acquisition
2036Special illumination such as grating, reflections, deflections, e.g. for characters with relief
G06T 7/77
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
TIMAGE DATA PROCESSING OR GENERATION, IN GENERAL
7Image analysis
70Determining position or orientation of objects or cameras
77using statistical methods
G07D 7/0032
GPHYSICS
07CHECKING-DEVICES
DHANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
7Testing 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
003using security elements
0032using holograms
Applicants
  • BUD, Andrew [GB]/[GB]
  • NEWELL, Andrew [GB]/[GB]
  • BIRD, Gemma [GB]/[GB]
Inventors
  • BUD, Andrew
  • NEWELL, Andrew
  • BIRD, Gemma
Agents
  • JENSEN & SON
Priority Data
62/831,03308.04.2019US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) DOCUMENT AUTHENTICATION BY DETERMINATION OF SURFACE APPEARANCE USING CONTROLLED ILLUMINATION
(FR) AUTHENTIFICATION DE DOCUMENT PAR DÉTERMINATION D'ASPECT DE SURFACE AU MOYEN D'UN ÉCLAIRAGE COMMANDÉ
Abstract
(EN)
A user is guided to move a device equipped with an illuminator and a camera with respect to a document whose genuineness is to be assessed. The motion includes changing the distance between the device and the document by moving the device or moving the document. Imagery of the document is captured during the movement and analyzed to determine a likelihood that the document includes features indicative of genuineness, such as a hologram, an original photograph, and other regions matching those of a genuine document. The analysis may include identifying regions exhibiting large changes in appearance over relatively small distance changes which characterize holograms, and obtaining the spatial extent of document features.
(FR)
Selon la présente invention, un utilisateur est guidé pour déplacer un dispositif équipé d'un illuminateur et d'une caméra par rapport à un document dont l'authenticité est à évaluer. Le mouvement consiste à modifier la distance entre le dispositif et le document en déplaçant le dispositif ou le document. L'imagerie du document est capturée pendant le mouvement puis analysée afin de déterminer la présence éventuelle de caractéristiques indiquant l'authenticité dans le document, telles qu'un hologramme, une photographie originale, et d'autres régions correspondant à celles d'un document authentique. L'analyse peut consister à identifier des régions présentant d'importants changements d'apparence sur des changements de distance relativement petits qui caractérisent des hologrammes, et à obtenir l'étendue spatiale de caractéristiques de document.
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