公开(公告)号：US20190278006A1

公开(公告)日：2019-09-12

申请号：US16335290

申请日：2017-05-17

Applicant: Hitachi, Ltd.

Inventor： Kazuyuki TAJIMA ,  Takeshi SHIMANO ,  Takeru UTSUGI

IPC: G02B5/18 ,  G02F1/1343 ,  H04N5/225 ,  H04N5/238

Abstract: This imaging device comprises: an image sensor which converts an optical image, captured by pixels arranged in an array on an imaging surface, into an image signal and outputs the image signal; a modulation unit which is provided to a light-receiving surface of the image sensor and modulates the intensity of light; and an image processing unit which carries out image processing on an output image output by the image sensor. The modulation unit has a grating substrate and a first grating pattern formed on a first surface of the grating substrate facing a surface of the image sensor near the light-receiving surface. The grating pattern is configured from a plurality of concentric circles having pitches which are inversely proportional to the distance from the origin point of at least one reference coordinate, the concentric circles do not overlap with each other within the grating pattern.

公开(公告)号：US20230410455A1

公开(公告)日：2023-12-21

申请号：US18131902

申请日：2023-04-07

Applicant: HITACHI, LTD.

Inventor： Kazuyuki TAJIMA ,  Keiichi MITANI ,  Yusuke NAKAMURA

IPC: G06V10/24 ,  G06T5/50 ,  G06T7/20

CPC classification number: G06V10/24 ,  G06T5/50 ,  G06T7/20 ,  G06T2207/20221

Abstract: An object of the invention is to provide a technique of performing alignment with high accuracy between a plurality of sensors even when a visual field overlapping region at the time of installation of the sensors is small in a case of imaging a subject using the plurality of sensors. An integrated image generation apparatus according to the invention generates a first pseudo visual field image that is able to be acquired by a first sensor in a first pseudo visual field generated by moving a relative position between the subject and the first sensor, and performs the alignment between the first pseudo visual field image and a second sensor image.

公开(公告)号：US20190306443A1

公开(公告)日：2019-10-03

申请号：US16292426

申请日：2019-03-05

Applicant: HITACHI, LTD.

Inventor： Chiyo OHNO ,  Yusuke NAKAMURA ,  Kazuyuki TAJIMA ,  Koji YAMASAKI ,  Takeshi SHIMANO

IPC: H04N5/357 ,  H04N5/369

Abstract: An imaging device includes: a modulator configured to modulate the intensity of light, based on a real pattern; an image sensor configured to convert light passing through the modulator to electrical signals to generate a sensor image; a complex sensor image processing unit configured to generate a complex sensor image including a complex number, from an image obtained by executing predetermined positioning for the sensor image taken through the real pattern; and an image processing unit configured to restore an image, based on an operation with the complex sensor image and data of a pattern for reconstruction.

公开(公告)号：US20190289184A1

公开(公告)日：2019-09-19

申请号：US16289790

申请日：2019-03-01

Applicant: HITACHI, LTD.

Inventor： Kazuyuki TAJIMA ,  Yusuke NAKAMURA

IPC: H04N5/238

Abstract: An imaging device includes: an image sensor including a plurality of light-receiving elements, configured to generate a sensor image by photoelectrically converting received light through the light-receiving elements; and a modulating unit configured to modulate the intensity of the light received by the image sensor, through a real pattern provided at a predetermined distance from a light-receiving surface of the image sensor, and the imaging device is characterized in that the width of an aperture of the real pattern provided for the modulating unit is determined, based on the predetermined distance and a two-dimensional size of the image sensor.

公开(公告)号：US20230333661A1

公开(公告)日：2023-10-19

申请号：US18116598

申请日：2023-03-02

Applicant: Hitachi, Ltd.

Inventor： Takashi NUMATA ,  Kazuyuki TAJIMA ,  Keiichi MITANI ,  Toshiteru NAKAMURA

IPC: G06F3/01 ,  G06F3/04815 ,  G06T19/20

CPC classification number: G06F3/017 ,  G06F3/04815 ,  G06T19/20 ,  G06T2219/2016 ,  G06T2200/24

Abstract: An arithmetic apparatus displays a 3D work-target object in a 3D coordinate space on a display device, and receives a motion signal that is a signal representing a motion measured by any one of sensor units. When receiving the motion signal, the arithmetic apparatus identifies the measured motion based on the motion signal. When the identified motion is a motion regarding a spatial shift that is a shift of a viewpoint in the 3D coordinate space of a user, the arithmetic apparatus shifts the viewpoint in the 3D coordinate space of the user in accordance with the identified motion. When the identified motion is a hand motion regarding a work movement with respect to a work target, the arithmetic apparatus outputs output information including information representing the work movement in accordance with the identified motion.

公开(公告)号：US20190268507A1

公开(公告)日：2019-08-29

申请号：US16278857

申请日：2019-02-19

Applicant: HITACHI, LTD.

Inventor： Yusuke NAKAMURA ,  Kazuyuki TAJIMA ,  Keita YAMAGUCHI

IPC: H04N5/217 ,  H04N5/232 ,  G02B27/60

Abstract: An imaging device includes: a modulator configured to modulate the intensity of light, based on a grating pattern; an image sensor configured to convert light passing through the modulator to electrical signals to generate a sensor image; a complex sensor image processing unit configured to generate, from the sensor image, a complex sensor image comprising a complex number; and a data transmission unit configured to transmit the complex sensor image.

公开(公告)号：US20220180086A1

公开(公告)日：2022-06-09

申请号：US17528582

申请日：2021-11-17

Applicant: HITACHI, LTD.

Inventor： Keiichi MITANI ,  Kazuyuki TAJIMA ,  Kazuyoshi YAMAZAKI

IPC: G06K9/00 ,  G06K9/20

Abstract: A calibration device performs a calibration between a plurality of imaging devices, each of which outputs field-of-view information which is information on a field-of-view of the imaging device itself. The field-of-view information contains a bitmap image and a range image. The calibration device includes: a state estimation part configured to detect, in a field of view of a first imaging device, an image of a second imaging device, and estimate a relative position and a relative attitude of the second imaging device with respect to the first imaging device, based on the detected image; and a transformation information calculation part configured to calculate transformation information between a coordinate system of the first imaging device and a coordinate system of the second imaging device, based on the estimated relative position and relative attitude.