公开(公告)号：US20220360705A1

公开(公告)日：2022-11-10

申请号：US17619769

申请日：2019-06-18

Applicant: NEC Corporation

Inventor： Yuka OGINO ,  Keiichi CHONO

IPC: H04N5/232 ,  H04N5/247 ,  G06T7/70 ,  G06V40/19

Abstract: An imaging system is provided with: a first imaging apparatus (2) that captures an image of an imaging target (T, TP) that is located at a first point (P1); a second imaging apparatus (3) a focus position of which is set at a second point (P2) that is located at a forward side along a moving direction of the imaging target than the first point; and a control apparatus (6) that controls the second imaging apparatus to capture an image of the imaging target that is located at the second point on the basis of the image (200) captured by the first imaging apparatus.

公开(公告)号：US20220189132A1

公开(公告)日：2022-06-16

申请号：US17439898

申请日：2019-03-26

Applicant: NEC Corporation

Inventor： Masato TSUKADA ,  Hiroshi IMAI ,  Chisato FUNAYAMA ,  Yuka OGINO ,  Ryuichi AKASHI ,  Keiichi CHONO ,  Emi INUI ,  Yasuhiko YOSHIDA ,  Hiroshi YAMADA ,  Shoji YACHIDA ,  Takashi SHIBATA

IPC: G06V10/25 ,  G06V10/60 ,  G06V40/18 ,  A61B5/16

Abstract: An image acquisition unit (2) acquires an image obtained by capturing at least eyes of a target person. An object specifying unit (4) specifies an object in a line-of-sight direction of the target person using the acquired image. An incident light amount calculation unit (6) calculates an incident light amount representing an amount of light incident on the eyes of the target person using the acquired image. A reference pupil size determination unit (8) determines a reference pupil size based on the calculated incident light amount. A pupil size calculation unit (10) calculates a pupil size of the target person using the acquired image. An interest determination unit (12) determines an interest of the target person in the object by comparing the determined reference pupil size with the calculated pupil size.

公开(公告)号：US20220139114A1

公开(公告)日：2022-05-05

申请号：US17431550

申请日：2020-02-12

Applicant: NEC Corporation

Inventor： Keiichi CHONO ,  Yuka OGINO ,  Masato TSUKADA

IPC: G06V40/18 ,  G06V10/141 ,  G06V10/25 ,  G06T7/246 ,  G06V40/19

Abstract: Iris image pick-up devices perform image pick-up of an iris of a moving subject. A guiding device guides the subject. A controller predicts a period in which the subject will blink next. Further, the controller predicts a period in which the subject will pass through the focusing point of the iris image pick-up devices. The controller controls the guiding device such that the subject does not blink at the focusing point in the case where the period in which the subject will blink next overlaps with the period in which the subject will pass through the focusing point.

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

IPC: G06K9/00 ,  G06K9/46 ,  G06F21/32

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.

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.

公开(公告)号：US20240267610A1

公开(公告)日：2024-08-08

申请号：US18638867

申请日：2024-04-18

Applicant: NEC Corporation

Inventor： Yuka OGINO ,  Keiichi Chono

IPC: H04N23/611 ,  G06T7/70 ,  G06V40/19 ,  H04N23/667 ,  H04N23/67 ,  H04N23/90

CPC classification number: H04N23/611 ,  G06T7/70 ,  G06V40/19 ,  H04N23/667 ,  H04N23/67 ,  H04N23/90 ,  G06T2207/30201

Abstract: An imaging system is provided with: a first imaging apparatus (2) that captures an image of an imaging target (T, TP) that is located at a first point (P1); a second imaging apparatus (3) a focus position of which is set at a second point (P2) that is located at a forward side along a moving direction of the imaging target than the first point; and a control apparatus (6) that controls the second imaging apparatus to capture an image of the imaging target that is located at the second point on the basis of the image (200) captured by the first imaging apparatus.

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

IPC: G06V40/70 ,  G06V40/18 ,  G06V20/52 ,  G06V40/16 ,  G06V40/19 ,  G06V40/10

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.

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.

公开(公告)号：US20230126960A1

公开(公告)日：2023-04-27

申请号：US17912222

申请日：2020-03-30

Applicant: NEC Corporation

Inventor： Yuka OGINO ,  Keiichi CHONO

IPC: G06V40/19 ,  G06V40/18 ,  G06V40/60 ,  H04N23/67 ,  H04N23/69 ,  H04N23/695 ,  G06V10/25 ,  H04N23/611 ,  G06V10/141

Abstract: An imaging system (10) according to the disclosure includes: a first control unit (11) configured to control, in such a way as to fix a focal position in a predetermined position, an iris imaging means for capturing an image focusing on an iris of a target person; an authentication unit (12) configured to authenticate the target person, based on an iris image of the target person being captured by the iris imaging means controlled by the first control unit (11); and a second control unit (13) configured to control the iris imaging means in such a way as to scan a focal position in a predetermined range, in order to re-authenticate the target person when authentication of the target person fails.

公开(公告)号：US20230100016A1

公开(公告)日：2023-03-30

申请号：US17801925

申请日：2020-02-28

Applicant: NEC Corporation

Inventor： Ryo YAMAKABE ,  Yuka OGINO ,  Keiichi CHONO

IPC: H04N23/67 ,  G06V40/18 ,  G02B7/04 ,  G03B13/36

Abstract: The image acquiring device 10 includes the voltage control unit 30 which generates first voltage information that can identify voltage applied to the first variable-focus lens 20A included in the first imaging unit 20 installed in a position where a subject can be photographed and whose focal length changes in accordance with an applied voltage, and generates second voltage information that can identify voltage applied to the second variable-focus lens 21A included in the second imaging unit 21 installed in the position where the subject can be photographed and whose focal length changes in accordance with an applied voltage, and the image judgment unit 40 which inputs images from the first imaging unit 20 and the second imaging unit 21, and selects one image taken at an in-focus position among input images, wherein the voltage control unit 30 generates information, as the first voltage information, that can identify each voltage in a time series of voltages whose values change with time, and generates information, as the second voltage information, that can identify that each of the voltages identified by the first voltage information is applied to the second variable-focus lens 21A after a predetermined period of delay.