公开(公告)号：US20250095288A1

公开(公告)日：2025-03-20

申请号：US18727330

申请日：2022-01-14

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Yusuke SAKURAHARA ,  Yukihiro GOTO ,  Masaki WAKI ,  Takashi EBINE

IPC: G06T17/00 ,  G06T19/20

Abstract: An object of the present disclosure is to enable a three-dimensional model to be created even for a target object which has unevenly spaced inter-point distances and only a part of a point cloud. According to the present disclosure, there are provided an apparatus and a method in which a three-dimensional model of a target object is created from point cloud data in which each point represents three-dimensional coordinates, the three-dimensional model is superimposed on an image in which a target object of the three-dimensional model is photographed, a point cloud data to be added to a point cloud data that constitutes the three-dimensional model is selected by comparing the three-dimensional model with the target object in the image, and the three-dimensional model of the target object is created again using the point cloud data including the point cloud to be added.

公开(公告)号：US20250014271A1

公开(公告)日：2025-01-09

申请号：US18711659

申请日：2021-11-25

Applicant: Nippon Telegraph and Telephone Corporation

Inventor： Yusuke SAKURAHARA ,  Mitsuyasu YANAGIDA ,  Yukihiro GOTO ,  Takashi EBINE

IPC: G06T17/00

Abstract: There is provided an apparatus for creating a three-dimensional model of an object having a small diameter from point cloud data representing three-dimensional coordinates. The apparatus is configured to cluster points included in the point cloud data, obtain a curve passing through points in a cluster for at least one cluster, extract point clouds disposed on a curve coincident with the curve passing through the points, and create a three-dimensional model of the object by connecting the extracted point clouds.

公开(公告)号：US20250095287A1

公开(公告)日：2025-03-20

申请号：US18727325

申请日：2022-01-14

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Yusuke SAKURAHARA ,  Yukihiro GOTO ,  Masaki WAKI ,  Takashi EBINE

IPC: G06T17/00

Abstract: An object of the present disclosure is to enable a three-dimensional model to be created even for a target object which has unevenly spaced inter-point distances and only a part of a point cloud.
According to the present disclosure, there are provided an apparatus and a method in which, a three-dimensional model of a target object is created from point cloud data in which each point represents three-dimensional coordinates, the three-dimensional model is superimposed on an image in which a target object of the three-dimensional model is photographed, a superimposed image generated by the superimposition is displayed, and when a range of the target object in the superimposed image is input, a three-dimensional model is created again using point cloud data in which a point is located in a range of the superimposed image.

公开(公告)号：US20230192450A1

公开(公告)日：2023-06-22

申请号：US17926697

申请日：2020-05-25

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Tatsuya MOKI ,  Takashi EBINE ,  Hidenobu HIROTA ,  Yoshiyasu SATO

IPC: B66C1/28 ,  B66C1/44 ,  B66C1/68 ,  B66C13/46

CPC classification number: B66C1/28 ,  B66C1/44 ,  B66C1/68 ,  B66C13/46 ,  B66C2700/0357

Abstract: An object of the present disclosure is to provide a utility pole rotation apparatus and a position control method that can reduce not only the number of workers for adjusting an orientation of a scaffold bolt (an orientation of a side surface of the utility pole) but also the number of workers for stopping swinging of the utility pole, which cannot be simultaneously reduced in the related art.
The utility pole rotation apparatus according to the present disclosure includes a gripping portion that grips a utility pole, and a roller having a cylindrical shape that contacts the utility pole at an inner side of the gripping portion and rotates the utility pole with a longitudinal direction serving as an axis due to rotation of the roller.

公开(公告)号：US20250046097A1

公开(公告)日：2025-02-06

申请号：US18716113

申请日：2021-12-09

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Yukihiro GOTO ,  Mitsuyasu YANAGIDA ,  Yusuke SAKURAHARA ,  Takashi EBINE

IPC: G06V20/58

Abstract: An object of the present disclosure is to enable extraction of a point cloud of a linear object such as a cable having a sparse point cloud.
The present disclosure is a device and a method in which point cloud data representing three-dimensional coordinates and a movement track at the time of measuring the point cloud data are acquired, and the number of point clouds within a certain distance DN from the point cloud on the movement track is repeatedly counted to extract a point cloud of a linear object such as a cable 92.

公开(公告)号：US20230296828A1

公开(公告)日：2023-09-21

申请号：US18013113

申请日：2020-07-06

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Hidenobu HIROTA ,  Takui UEMATSU ,  Hiroyuki IIDA ,  Takashi EBINE

IPC: G02B6/02 ,  G02B6/245

CPC classification number: G02B6/02395 ,  G02B6/245

Abstract: An object of the present disclosure is to enable an optical signal propagating through a core of an optical fiber to enter and exit without bending the optical fiber.
The optical fiber of the present disclosure includes: a core; a cladding layer having a refractive index lower than a refractive index of the core; and a coating layer that coats an outer periphery of the cladding layer, in which the cladding layer includes: a first cladding portion of which main component is the same as that of the core; and a second cladding portion of which main component is different from the main component of the first cladding portion, and is softer than the first cladding portion, and an interface between the first cladding portion and the second cladding portion is in contact with the core.

公开(公告)号：US20250104345A1

公开(公告)日：2025-03-27

申请号：US18730846

申请日：2022-01-31

Applicant: Nippon Telegraph and Telephone Corporation

Inventor： Yusuke SAKURAHARA ,  Yukihiro GOTO ,  Takashi EBINE

IPC: G06T17/00 ,  G06V10/60 ,  G06V10/764

Abstract: Provided is a device and a method for extracting point clouds of structures from point clouds by clustering a point cloud in which each point represents three-dimensional coordinates, and detecting a target facility from the structures using reflection intensities of the extracted point clouds of the structures.

公开(公告)号：US20220342153A1

公开(公告)日：2022-10-27

申请号：US17762252

申请日：2019-10-02

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Takui UEMATSU ,  Hidenobu HIROTA ,  Hiroyuki IIDA ,  Takashi EBINE

IPC: G02B6/28

Abstract: A manufacturing method of an optical splitter of the present disclosure includes: performing first processing that involves mounting a coated optical fiber on a jig configured to store the coated optical fiber, and polishing the coated optical fiber together with the jig until reaching a vicinity of a core of the coated optical fiber or the core of the coated optical fiber; performing second processing that involves applying a refractive index matching material having a refractive index lower than a refractive index of the core of the coated optical fiber onto a polished face of the coated optical fiber on the jig polished in the first processing or onto a polished face of an optical waveguide circuit having been polished in advance until reaching a vicinity of a core or reaching the core, and then bonding the polished faces to each other; and performing third processing that involves positionally aligning the polished faces bonded with each other in the second processing to move the jig or the optical waveguide circuit to a position at which a desired splitting ratio is obtained.