公开(公告)号：US20240233155A9

公开(公告)日：2024-07-11

申请号：US18484952

申请日：2023-10-11

Applicant: NEC Corporation

Inventor： Tsubasa NAKAMURA

IPC: G06T7/521 ,  G06T3/60

CPC classification number: G06T7/521 ,  G06T3/60 ,  G06T2207/10028 ,  G06T2207/30184

Abstract: Three-dimensional data acquisition means acquires three-dimensional data output from a three-dimensional ranging sensor for scanning a paved surface for aircraft using laser light. Extraction means extracts, from the three-dimensional data, real image data about a real image present on the paved surface and mirage image data about a mirage image corresponding to the real image. Foreign object detection means detects a foreign object left on the paved surface using the real image data and the mirage image data.

公开(公告)号：US20240135562A1

公开(公告)日：2024-04-25

申请号：US18484952

申请日：2023-10-10

Applicant: NEC Corporation

Inventor： Tsubasa NAKAMURA

IPC: G06T7/521 ,  G06T3/60

CPC classification number: G06T7/521 ,  G06T3/60 ,  G06T2207/10028 ,  G06T2207/30184

Abstract: Three-dimensional data acquisition means acquires three-dimensional data output from a three-dimensional ranging sensor for scanning a paved surface for aircraft using laser light. Extraction means extracts, from the three-dimensional data, real image data about a real image present on the paved surface and mirage image data about a mirage image corresponding to the real image. Foreign object detection means detects a foreign object left on the paved surface using the real image data and the mirage image data.

公开(公告)号：US20240126952A1

公开(公告)日：2024-04-18

申请号：US18375663

申请日：2023-10-02

Applicant: NEC Corporation

Inventor： Tsubasa NAKAMURA ,  Jiro ABE

IPC: G06F30/27 ,  G01S7/4865 ,  G01S17/10

CPC classification number: G06F30/27 ,  G01S7/4865 ,  G01S17/10

Abstract: In an arithmetic operation system, an evaluation unit calculates a difference amount between a teaching signal and an estimated signal. The teaching signal is a spatial distribution signal observed with respect to a spatial structure on a path of an emission wave in a target space (i.e., a teaching space) by using the emission wave. In addition, the estimated signal is a signal for comparing with the teaching signal, and is an estimated spatial distribution signal. The estimated signal is formed based on estimated density associated to each sample point acquired from a spatial estimation model, by a sampling unit inputting information about a position of each of a plurality of sample points on the path to the spatial estimation model. An updating unit updates the spatial estimation model, based on the difference amount.

公开(公告)号：US20240012148A1

公开(公告)日：2024-01-11

申请号：US18215424

申请日：2023-06-28

Applicant: NEC Corporation

Inventor： Tsubasa NAKAMURA

IPC: G01S17/89 ,  G01S7/481

CPC classification number: G01S17/89 ,  G01S7/4817

Abstract: An optical sensing device includes a controller that rotates a light irradiation circuit that irradiates an irradiation target being at least a part of a target with laser light, and thus move an incident position of the laser light on the irradiation target in a reciprocating manner between one end and another end of the irradiation target, via a center positioned between the one end and the another end of the irradiation target, an acquisition circuit that acquires information relating to reflected light associated with the incident position, based on the reflected light from the irradiation target, and a generation circuit that generates point cloud data relating to the irradiation target, based on the information relating to the reflected light, wherein, when the incident position moves to the center of the irradiation target, the controller reduces a speed at which the light irradiation circuit is rotated.

公开(公告)号：US20240126953A1

公开(公告)日：2024-04-18

申请号：US18375666

申请日：2023-10-02

Applicant: NEC Corporation

Inventor： Tsubasa NAKAMURA

IPC: G06F30/27 ,  G01S7/4865 ,  G01S17/10

CPC classification number: G06F30/27 ,  G01S7/4865 ,  G01S17/10

Abstract: In an arithmetic operation system, an updating unit updates a spatial estimation model, based on a first difference amount and a second difference amount. The first difference amount is a difference amount between a first teaching signal and a first estimated signal. The first teaching signal is a spatial distribution signal observed by a first sensor with respect to a spatial structure on a path of an emission wave in a target space (i.e., a teaching space) by using the emission wave. The second difference amount is a difference amount between a second teaching signal and a second estimated signal. The second teaching signal is an observed signal observed by a second sensor different in type from the first sensor. The second estimated signal is a signal for comparing with the second teaching signal, and is a signal of a form similar to that of the second teaching signal.

公开(公告)号：US20240125935A1

公开(公告)日：2024-04-18

申请号：US18375648

申请日：2023-10-02

Applicant: NEC Corporation

Inventor： Tsubasa NAKAMURA

IPC: G01S17/89

CPC classification number: G01S17/89

Abstract: In an arithmetic operation system, an evaluation unit calculates a difference amount between a teaching signal and an estimated signal. The teaching signal has a value that is obtained by integrating spatial distribution signals observed by a sensor using emission waves for a spatial structure along a region of interest in an emission wave region in which emission waves are emitted from a plurality of emission reference directions and reach the sensor. The region of interest is a curved line region or a curved surface region intersecting the plurality of emission reference directions. This estimated signal is calculated by integrating a plurality of pieces of estimated density of a plurality of sample points obtained from a spatial estimation model by having a sampling unit input information about a position of each of the plurality of sample points on the region of interest to the spatial estimation model.