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公开(公告)号：US20220139110A1
公开(公告)日：2022-05-05
申请号：US17431535
申请日：2020-02-12
Applicant: NEC Corporation
Inventor： Keiichi CHONO , Takahiro TOIZUMI , Masato TSUKADA
Abstract: Iris image pick-up devices have the same field of view and are disposed at mutually different positions. An overall image pick-up device performs image pick-up over a wide field of view. A guiding device guides a subject. An illumination device illuminates the subject with light. The controller controls, using an image from the overall image pick-up device, at least one of reading out an image from the iris image pick-up devices, presenting at least of an image and a sound through the guiding device, or providing illumination with light from the illumination device.
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12.发明申请公开(公告)号：US20220092871A1
公开(公告)日：2022-03-24
申请号：US17428168
申请日：2019-02-06
Applicant: NEC Corporation
Inventor： Takahiro TOIZUMI , Masato TSUKADA
Abstract: An object is to provide a filter learning device capable of optimizing recognition processing using features obtained from the characteristics of light. The filter learning device (10) according to the present disclosure includes an optical filter unit (11) for extracting a filter image from an image for learning by using a filter condition determined according to a filter parameter, a parameter updating unit (12) for updating the filter parameter with a result obtained by executing image analysis processing on the filter image, and a sensing unit (13) for sensing an input image by using a physical optical filter that satisfies a filter condition determined according to the updated filter parameter.
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公开(公告)号：US20220027647A1
公开(公告)日：2022-01-27
申请号：US17312094
申请日：2018-12-14
Applicant: NEC Corporation
Inventor： Masato TSUKADA , Chisato FUNAYAMA , Yuka OGINO , Hiroshi IMAI , Keiichi CHONO , Emi KITAGAWA , Yasuhiko YOSHIDA , Hiroshi YAMADA , Takashi SHIBATA , Shoji YACHIDA , Ryuichi AKASHI
Abstract: In order to determine whether a color contact lens is being worn on an iris, this image processing device includes: a first feature amount calculation means for using an image of the iris in a first wavelength band to calculate a first feature amount in the first wavelength band, said iris being used in authentication of a person; a second feature amount calculation means for using an image of the iris in a second wavelength band to calculate a second feature amount in the second wavelength band; and a covering determination means for determining, on the basis of the first feature amount and the second feature amount, whether a color contact lens is present on the iris.
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公开(公告)号：US20240350038A1
公开(公告)日：2024-10-24
申请号：US18757651
申请日：2024-06-28
Applicant: NEC Corporation
Inventor： Takashi SHIBATA , Shoji YACHIDA , Chisato FUNAYAMA , Masato TSUKADA , Yuka OGINO , Keiichi CHONO , Emi KITAGAWA , Yasuhiko YOSHIDA , Yusuke MORI
IPC: A61B5/1171 , G06F21/32 , G06V10/26
CPC classification number: A61B5/1171 , G06F21/32 , G06V10/267
Abstract: An authentication device includes an image acquisition unit, an identification unit, and an authentication unit. The image acquisition unit acquires an image of an eye of a subject. The identification unit identifies the colored pattern of a colored contact lens worn by the subject by comparing a reference image with the image of the eye. The authentication unit identifies the subject, using a feature in a region other than a colored region of the colored pattern in the iris region of the eye.
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15.发明公开公开(公告)号：US20240264000A1
公开(公告)日：2024-08-08
申请号：US18563432
申请日：2021-05-28
Applicant: NEC CORPORATION
Inventor： Chisato FUNAYAMA , Masato TSUKADA
CPC classification number: G01J3/52 , G01J3/108 , G01J3/42 , G01J3/50 , G06T7/90 , G01J2003/425 , G06V40/10
Abstract: A chart includes: a substrate; a first skin reflection patch part that is formed on the substrate and that simulates reflection of near-infrared rays of a predetermined wavelength, in a skin of a living body of a first skin color; and a second skin reflection patch part that is formed on the substrate and that simulates reflection of the near-infrared rays of the predetermined wavelength, in the skin of the living body of a second skin color that is different from the first skin color. According to such a chart, it is possible to properly determine whether or not an imaging environment of an image is suitable for biometric authentication.
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Patent Agency Ranking
16.发明公开公开(公告)号：US20240155244A1
公开(公告)日：2024-05-09
申请号：US17775969
申请日：2021-09-30
Applicant: NEC CORPORATION
Inventor： Masato TSUKADA
CPC classification number: H04N23/71 , G06T7/20 , G06T7/90 , H04N23/72 , H04N23/73 , H04N23/74 , G06T2207/10024 , G06T2207/30196
Abstract: An information processing system (10) comprises: an acquiring means (110) for acquiring skin color information which is information relating to skin color of a target; an estimating means (120) for estimating luminance information of skin of the target on the basis of the skin color information; and a control means (130) for controlling at least one of camera parameter relating to exposure and illumination (19) when imaging the target on the basis of the luminance information. According to such the information processing system, it is possible to image a target with an appropriate condition.
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公开(公告)号：US20230368583A1
公开(公告)日：2023-11-16
申请号：US18221319
申请日：2023-07-12
Applicant: NEC Corporation
Inventor： Takashi SHIBATA , Shoji YACHIDA , Chisato FUNAYAMA , Masato TSUKADA , Yuka OGINO , Keiichi CHONO , Emi KITAGAWA , Yasuhiko YOSHIDA , Yusuke MORI
CPC classification number: G06V40/70 , G06V40/197 , G06V20/52 , G06V40/171 , G06V40/19 , G06V40/103 , G06V2201/07
Abstract: The disclosure is detecting an authentication target who is moving in a predetermined direction in a video; inputting a first image in which an entire body of the target; calculating characteristic information from an image of the entire body in the first image, comparing the calculated characteristic information with characteristic information of the entire body stored in first memory that stores characteristic information of entire bodies of targets, and extracting candidate information of the targets from the first memory based on a first authentication result; inputting a second image in which an iris of the target; and comparing characteristic information of irises stored in second memory that stores the characteristic information of the irises of targets with characteristic information of an iris from the second image, calculating a verification score, executing second authentication on the target in the second image based on the verification score, and outputting an authentication result.
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公开(公告)号：US20230351809A1
公开(公告)日：2023-11-02
申请号：US18217851
申请日：2023-07-03
Applicant: NEC Corporation
Inventor： Takashi SHIBATA , Shoji YACHIDA , Chisato FUNAYAMA , Masato TSUKADA , Yuka OGINO , Keiichi CHONO , Emi KITAGAWA , Yasuhiko YOSHIDA , Yusuke MORI
IPC: G06V40/18 , G06V40/19 , G06V40/20 , G06V40/70 , G06V40/10 , G06V40/16 , G06V10/764 , G06V10/60 , G06V10/22
CPC classification number: G06V40/197 , G06V40/19 , G06V40/25 , G06V40/70 , G06V40/103 , G06V40/172 , G06V10/764 , G06V10/60 , G06V10/22
Abstract: The disclosure is inputting a first image captured an image of an authentication target; inputting a second image captured an image of a right eye or a left eye of the target; determining whether the second image is of a left eye or a right eye of the target based on information including the first image, and outputting a determination result as left/right information in association with the second image; detecting an overlap between a region including the second image and a predetermined region in the first image; calculating a verification score by comparing characteristic information that are related to the left/right information with iris characteristic information calculated from the second image, and calculating a first weighted verification score obtained by weighting the verification score with a detection result; and authenticating a target in the second image based on the first weighted verification score, and outputting an authentication result.
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公开(公告)号：US20220254193A1
公开(公告)日：2022-08-11
申请号：US17680698
申请日：2022-02-25
Applicant: NEC Corporation
Inventor： Takashi SHIBATA , Shoji YACHIDA , Chisato FUNAYAMA , Masato TSUKADA , Yuka OGINO , Keiichi CHONO , Emi KITAGAWA , Yasuhiko YOSHIDA , Yusuke MORI
Abstract: The disclosure is inputting a first image obtained by capturing an object of authentication moving in a specific direction; inputting a second image at least for one eye obtained by capturing a right eye or a left eye of the object; determining whether the second image is of the left eye or the right eye of the object, based on information including the first image, and outputting a determination result associated with the second image as left/right information; comparing characteristic information relevant to the left/right information, the characteristic information being acquired from a memory that stores the characteristic information of a right eye and a left eye pertaining to object to be authenticated, with characteristic information associated with the left/right information, and calculating a verification score; and authenticating the object captured in the first image and the second image, based on the verification score, and outputting an authentication result.
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公开(公告)号：US20220189207A1
公开(公告)日：2022-06-16
申请号：US17684808
申请日：2022-03-02
Applicant: NEC Corporation
Inventor： Takashi SHIBATA , Shoji YACHIDA , Chisato FUNAYAMA , Masato TSUKADA , Yuka OGINO , Keiichi CHONO , Emi KITAGAWA , Yasuhiko YOSHIDA , Yusuke MORI
Abstract: The disclosure is inputting a first image captured an image of an authentication target; inputting a second image captured an image of a right eye or a left eye of the target; determining whether the second image is of a left eye or a right eye of the target based on information including the first image, and outputting a determination result as left/right information in association with the second image; detecting an overlap between a region including the second image and a predetermined region in the first image; calculating a verification score by comparing characteristic information that are related to the left/right information with iris characteristic information calculated from the second image, and calculating a first weighted verification score obtained by weighting the verification score with a detection result; and authenticating a target in the second image based on the first weighted verification score, and outputting an authentication result.
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