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公开(公告)号：US10943421B2
公开(公告)日：2021-03-09
申请号：US16127796
申请日：2018-09-11
Applicant: TOPPAN PRINTING CO., LTD.
Inventor： Takashi Okada , Tomohito Masuda , Eri Miyamoto , Kota Aono , Shogo Fujita
IPC: G07D7/128 , G06K9/20 , G07D7/005 , B42D25/30 , B42D25/328 , G07D7/206 , G07D7/1205
Abstract: An identification device of the present invention determines authenticity of an article with an anti-counterfeiting medium varying in a pattern of observed light depending on changes in light characteristics of radiated light, using the anti-counterfeiting medium. The identification device includes a similarity calculation unit that determines the degrees of similarity between a plurality of captured image data of the anti-counterfeiting medium obtained with differences in the light characteristics of the radiated light and reference image data corresponding to the light characteristics; and an authenticity determination unit that determines whether the degrees of similarity determined for the individual light characteristics exceed thresholds set corresponding to the individual light characteristics to make an authenticity determination on whether the anti-counterfeiting medium is genuine.
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公开(公告)号：US10891818B2
公开(公告)日：2021-01-12
申请号：US16128046
申请日：2018-09-11
Applicant: TOPPAN PRINTING CO., LTD.
Inventor： Takashi Okada , Tomohito Masuda , Eri Miyamoto , Kota Aono , Shogo Fujita
Abstract: An identification device according to the present invention that performs authenticity determination of an article provided with an anti-counterfeiting medium whose observed light pattern changes depending on an observation angle includes a similarity calculating unit that calculates a degree of similarity between captured image data of the anti-counterfeiting medium and reference image data; an authenticity determination unit that performs authenticity determination as to whether the anti-counterfeiting medium is genuine or not on the basis of whether the degree of similarity exceeds a predetermined threshold or not; and a match-percentage notification unit that notifies a match-percentage indicative of a degree of match between an imaging viewpoint for imaging the anti-counterfeiting medium and a reference imaging viewpoint which is predefined as the imaging viewpoint for the captured image data used for authenticity determination.
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