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：US20220191506A1

公开(公告)日：2022-06-16

申请号：US17685579

申请日：2022-03-03

Applicant: NEC Corporation

Inventor： Kenta SENZAKI ,  Yuzo SENDA ,  Keiichi CHONO ,  Hirofumi AOKI

IPC: H04N19/139 ,  H04N19/61 ,  H04N19/109 ,  H04N19/119 ,  H04N19/176 ,  H04N19/46 ,  H04N19/51 ,  H04N19/147 ,  H04N19/70

Abstract: A video encoding device includes encoding control means 11 for controlling an inter-PU partition type of a CU to be encoded, based on the maximum number (PA) of motion vectors allowed for an image block having a predetermined area and the number (PB) of motion vectors of an encoded image block contained in the image block having the predetermined area. A video decoding device includes decoding control means for controlling an inter-PU partition type of a CU to be decoded, based on the maximum number (PA) of motion vectors allowed for an image block having a predetermined area and the number (PB) of motion vectors of a decoded image block contained in the image block having the predetermined area.

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：US20220139112A1

公开(公告)日：2022-05-05

申请号：US17431539

申请日：2020-02-12

Applicant: NEC Corporation

Inventor： Keiichi CHONO ,  Chisato FUNAYAMA ,  Masato TSUKADA

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

Abstract: A controller controls the readout of an image from iris image pick-up devices for performing image pick-up of an iris of a subject. In the control of the readout of an image from the iris image pick-up devices, the controller sets a region of interest to be treated as a target of the image readout. The controller stores past information, and in the case of performing image processing on the same subject, the controller determines whether or not an eye region of the subject was successfully covered by the region of interest used in the past. In the case of determining that the eye region of the subject was not successfully covered, the controller corrects the readout of an image from the iris image pick-up devices.

公开(公告)号：US20220139111A1

公开(公告)日：2022-05-05

申请号：US17431542

申请日：2020-02-12

Applicant: NEC Corporation

Inventor： Keiichi CHONO ,  Masato TSUKADA

IPC: G06V40/19 ,  G06V40/60 ,  G06V10/141 ,  G06V10/25 ,  G06T7/20 ,  H04N5/247 ,  H04N5/232 ,  H04N5/225

Abstract: Iris image pick-up devices perform image pick-up of an iris of a moving subject. Images from the iris image pick-up devices are written to storage areas for transfer in a memory. A readout device reads out an image stored in the storage areas for transfer to a storage area for image processing at a frame interval corresponding to the movement speed of the subject. An image processing unit executes processing using the image read out to the storage area for image processing.

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

IPC: G06V40/19 ,  G06V40/60 ,  H04N5/247

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.

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：US20210266553A1

公开(公告)日：2021-08-26

申请号：US17316431

申请日：2021-05-10

Applicant: NEC Corporation

Inventor： Keiichi CHONO

IPC: H04N19/126 ,  H04N19/176 ,  H04N19/186 ,  H04N19/70 ,  H04N19/136

Abstract: In a video coding device, a generation unit generates the prediction error signal from an input image, a transformation unit transforms the prediction error signal depending on a color space selected from among the plurality of color spaces, an adaptive chroma quantization offset derivation unit derives an adaptive chroma quantization offset, which is a parameter for adjusting a quantization parameter of a chroma component, for each of the plurality of color spaces, a quantization unit generates a quantization coefficient image based on the prediction error signal or the transformed prediction error signal by the transformation means, and an inverse quantization unit inverse-quantizes the quantization coefficient image by using the adaptive chroma quantization offset for the selected color space.

公开(公告)号：US20200221132A1

公开(公告)日：2020-07-09

申请号：US16824778

申请日：2020-03-20

Applicant: NEC CORPORATION

Inventor： Takayuki ISHIDA ,  Keiichi CHONO

IPC: H04N19/70 ,  H04N19/114 ,  H04N19/136 ,  H04N19/31 ,  H04N19/177 ,  H04N19/30 ,  H04N19/103

Abstract: In a video encoding device, a transmission section sets a value corresponding to characteristics specified by ITU-R BT.709 to 1 in the transfer characteristics syntax when the dynamic range of the video signal is a SDR (Standard Dynamic Range), and sets a value corresponding to one of characteristics specified by HLG (Hybrid Log Gamma) to 18 or a value corresponding to one of characteristics specified by PQ (Perceptual Quantizer) to 16 when the dynamic range of the video signal is a HDR (High Dynamic Range).