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1. (WO2016062937) METHOD OF COMPARING DIGITAL IMAGES
Latest bibliographic data on file with the International Bureau   

Pub. No.: WO/2016/062937 International Application No.: PCT/FR2015/052711
Publication Date: 28.04.2016 International Filing Date: 08.10.2015
IPC:
G06K 9/62 (2006.01) ,G07D 7/20 (2016.01)
G PHYSICS
06
COMPUTING; CALCULATING; COUNTING
K
RECOGNITION OF DATA; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
9
Methods or arrangements for reading or recognising printed or written characters or for recognising patterns, e.g. fingerprints
62
Methods or arrangements for recognition using electronic means
G PHYSICS
07
CHECKING-DEVICES
D
HANDLING OF COINS OR OF PAPER CURRENCY OR SIMILAR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
7
Testing specially adapted to determine the identity or genuineness of paper currency or similar valuable papers, e.g. for segregating those which are unacceptable or alien to a currency
20
Testing patterns thereon
Applicants: SURYS[FR/FR]; 22 avenue de l'Europe Parc d'Activité Gustave Eiffel F-77600 Bussy Saint Georges, FR
Inventors: PIC, Marc; FR
Agent: BOUVIER, Thibault; FR
Priority Data:
146014822.10.2014FR
Title (EN) METHOD OF COMPARING DIGITAL IMAGES
(FR) PROCEDE DE COMPARAISON D'IMAGES NUMERIQUES
Abstract:
(EN) The invention relates to a method of comparing a test image (IMGT) with a reference image (IMGR), comprising: identifying (100) at least two zones of interest (IZ1, IZ2, IZ3, IZ4) in the reference image. It is essentially characterized in that it consists in: selecting (110) in a random manner one at least of the zones of interest identified in the reference image, selecting (120) a subset (SAR) of the reference image, said subset comprising at least one pixel of said selected zone of interest, selecting (130) at least one subset (SAT) of the test image, said subset of the test image corresponding to said subset of a reference image, and comparing (140) said subset of the test image (SAT) with the corresponding subset (SAR) of the reference image, the method comprising optionally furthermore a step consisting in authenticating (141) said test image as a function of the result of the comparison.
(FR) L'invention concerne un procédé de comparaison d'une image test (IMGT) à une image de référence (IMGR), comprenant: identifier (100) au moins deux zones d'intérêt (IZ1, IZ2, IZ3, IZ4) dans l'image de référence. Il est essentiellement caractérisé en ce qu'il à: sélectionner (110) de façon aléatoire l'une au moins des zones d'intérêt identifiées dans l'image de référence, sélectionner (120) un sous-ensemble (SAR) de l'image de référence, ledit sous-ensemble comprenant au moins un pixel de ladite zone d'intérêt sélectionnée, sélectionner (130) au moins un sous-ensemble (SAT) de l'image test, ledit sous-ensemble de l'image test correspondant audit sous-ensemble d'une image de référence, et comparer (140) ledit sous-ensemble de l'image test (SAT) au sous-ensemble correspondant (SAR) de l'image de référence, le procédé comprenant optionnellement en outre une étape consistant à authentifier (141) ladite image test en fonction du résultat de la comparaison.
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JP, KE, KG, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: French (FR)
Filing Language: French (FR)