# US 2023/0057554 A1 · Distance measurement system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2023/0057554 A1 - Document ID: US20230057554A1 - Status: Published application - Kind: A1 - Application number: 17/863,534 - Filed: 2022-07-13 - Published: 2023-02-23 - Earliest claimed: 2021-08-18 - Assignees: Hitachi-LG Data Storage, Inc. - Applicants: Hitachi-LG Data Storage, Inc. - Inventors: Tsukasa TAKAHASHI; Katsuhiko IZUMI - Web page: https://patentgrep.com/patent/US20230057554A1 ## CPC - G01S 17/894: Three-dimensional [3D] imaging with simultaneous measurement of time-of-flight at a two-dimensional [2D] array of receiver pixels, e.g. time-of-flight cameras or flash lidar - G01J 5/0025: {Living bodies (ear thermometers G01J5/0011; detecting, measuring or recording for diagnostic purposes A61B5/00)} - G01S 7/4863: Detector arrays, e.g. charge-transfer gates - G01S 7/4865: Time delay measurement, e.g. time-of-flight measurement, time of arrival measurement or determining the exact position of a peak (peak detection in noise, signal conditioning G01S7/487) - G01S 17/86: Combinations of lidar systems with systems other than lidar, radar or sonar, e.g. with direction finders - G06T 7/50: Depth or shape recovery - G06T 7/70: Determining position or orientation of objects or cameras (camera calibration G06T7/80) - 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 - G01J: MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY (light sources F21, H01J, H01K, H05B; investigating properties of materials by optical means G01N) - G06T: IMAGE DATA PROCESSING OR GENERATION, IN GENERAL ## Abstract A distance measurement system according to the invention includes a processor, a distance measurement device, and a heat detection device. In the distance measurement system, the distance measurement device can measure a distance to a subject and can generate a distance image related to the subject whose distance has been measured. The heat detection device can measure the temperature of the subject and can generate a temperature image related to the subject whose temperature has been measured. The processor can associate the distance image and the temperature image acquired from the same point of view and determine whether or not the subject is an object on the basis of a distance value and a temperature value at the same position in the images. ## Claims ### Claim 1 A distance measurement system comprising: a processor; a distance measurement device that measures a distance and generates a distance image; and a heat detection device that measures a temperature and generates a temperature image, wherein the processor associates the distance image and the temperature image acquired from the same point of view and determines whether or not a subject is an object on the basis of a distance value and a temperature value at the same position in the images. ### Claim 2 (depends on 1) The distance measurement system according to claim 1, wherein the processor determines whether or not the temperature value is within a predetermined temperature range in the determination of the subject. ### Claim 3 (depends on 2) The distance measurement system according to claim 2, wherein the processor detects the subject determined to be the object from a pixel or a point group having the distance value in the distance image. ### Claim 4 (depends on 2) The distance measurement system according to claim 2, wherein the processor associates the distance image and the temperature image to generate an association image which is a three-dimensional image including a shape and temperature information of the subject. ### Claim 5 (depends on 2) The distance measurement system according to claim 2, wherein the processor associates the distance image and the temperature image to generate an association image which is a two-dimensional image including a shape and temperature information of the subject. ### Claim 6 (depends on 4) The distance measurement system according to claim 4, wherein the processor detects the subject determined to be the object from a point group of a distance value having a temperature value within a predetermined temperature range in the association image. ### Claim 7 (depends on 5) The distance measurement system according to claim 5, wherein the processor detects the subject determined to be the object from each pixel of a distance value having a temperature value within a predetermined temperature range in the association image. ### Claim 8 (depends on 1) The distance measurement system according to claim 1, wherein the processor corrects the temperature value according to the distance value and performs a process. ### Claim 9 (depends on 2) The distance measurement system according to claim 2, wherein the processor corrects the temperature value according to the distance value and performs a process. ### Claim 10 (depends on 3) The distance measurement system according to claim 3, wherein the processor corrects the temperature value according to the distance value and performs a process. ### Claim 11 (depends on 4) The distance measurement system according to claim 4, wherein the processor corrects the temperature value according to the distance value and performs a process. ### Claim 12 (depends on 5) The distance measurement system according to claim 5, wherein the processor corrects the temperature value according to the distance value and performs a process. ### Claim 13 (depends on 6) The distance measurement system according to claim 6, wherein the processor corrects the temperature value according to the distance value and performs a process. ### Claim 14 (depends on 7) The distance measurement system according to claim 7, wherein the processor corrects the temperature value according to the distance value and performs a process. ### Claim 15 (depends on 1) The distance measurement system according to claim 1, wherein the heat detection device is provided in a lower part of the distance measurement device. ### Claim 16 (depends on 2) The distance measurement system according to claim 2, wherein a temperature range in a case in which the subject is determined to be a person is set in a range equivalent to a human body temperature.