# US 2025/0093513 A1 · Identification system, identification method, and storage medium

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- Number: US 2025/0093513 A1
- Document ID: US20250093513A1
- Status: Published application
- Kind: A1
- Application number: 18/730,829
- Filed: 2022-01-25
- Published: 2025-03-20
- Earliest claimed: 2022-01-25
- Assignees: NEC Corporation
- Applicants: NEC Corporation
- Inventors: Katsuhiro YUTANI
- Web page: https://patentgrep.com/patent/US20250093513A1

## CPC

- G01S 17/89: for mapping or imaging
- G01B 11/00: Measuring arrangements characterised by the use of optical techniques
- G01C 15/00: Surveying instruments or accessories not provided for in groups G01C1/00 - G01C13/00
- G01S 7/4802: {using analysis of echo signal for target characterisation; Target signature; Target cross-section}
- G01S 17/42: Simultaneous measurement of distance and other co-ordinates (indirect measurement G01S17/46)
- G01S 17/58: Velocity or trajectory determination systems; Sense-of-movement determination systems
- G01S 13/52: Discriminating between fixed and moving objects or between objects moving at different speeds
- G01S: RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01B: MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01C: MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY (measuring liquid level G01F; radio navigation, determining distance or velocity by use of propagation effects, e.g. Doppler effects, propagation time, of radio waves, analogous arrangements using other waves G01S)

## Abstract

The identification system includes: an acquisition circuit that, on the basis of a laser beam emitted to a plurality of positions within a target space including the still structure and reflected beams from the laser beams, acquires position information based on the positions and wavelength information based on the wavelength of the reflected beams that were reflected off of the positions; an identification circuit that identifies, on the basis of the wavelength information and from among the plurality of positions, a moving body position where a moving body is present; and a monitoring setting circuit that sets, from among the plurality of positions, the positions other than the moving body position to be monitored.

## Claims

### Claim 1

An identification system comprising:
an acquisition circuit configured to acquire, based on laser light emitted to a plurality of positions within a target space including a stationary structure and reflected light of the laser light, position information according to the positions and wavelength information based on a wavelength of the reflected light reflected at the plurality of positions;
an identification circuit configured to identify, based on the wavelength information, a moving object position where a moving object is present among the plurality of positions; and
a monitoring setting circuit configured to set, to a target of monitoring, the positions other than the moving object position among the plurality of positions.

### Claim 2 (depends on 1)

The identification system according to claim 1, further comprising a point cloud data generator configured to generate point cloud data being a set of points associated with the positions other than the moving object position, among the plurality of positions.

### Claim 3 (depends on 1)

The identification system according to claim 1, wherein the acquisition circuit acquires the wavelength information according to a difference between the wavelength of the reflected light and a wavelength of the laser light.

### Claim 4 (depends on 1)

The identification system according to claim 1, further comprising a detector configured to detect a matching portion that satisfies a condition according to a predetermined shape among the positions other than the moving object position,
wherein the monitoring setting circuit sets the matching portion to a target of monitoring.

### Claim 5 (depends on 1)

The identification system according to claim 1, further comprising a monitor configured to monitor the position being set as the target of monitoring.

### Claim 6

An identification method comprising:
acquiring, based on laser light emitted to a plurality of positions within a target space including a stationary structure and reflected light of the laser light, position information according to the positions and wavelength information based on a wavelength of the reflected light reflected at the positions;
identifying, based on the wavelength information, a moving object position where a moving object is present among the plurality of positions; and
setting, to a target of monitoring, the positions other than the moving object position among the plurality of positions.

### Claim 7

A tangible and non-transitory storage medium storing a program that causes an information processing apparatus to execute:
processing of acquiring, based on laser light emitted to a plurality of positions within a target space including a stationary structure and reflected light of the laser light, position information according to the positions and wavelength information based on a wavelength of the reflected light reflected at the positions;
processing of identifying, based on the wavelength information, a moving object position where a moving object is present among the plurality of positions; and
processing of setting, to a target of monitoring, the positions other than the moving object position among the plurality of positions.