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公开(公告)号：US20220342049A1
公开(公告)日：2022-10-27
申请号：US17714296
申请日：2022-04-06
发明人： Hisataka SUGIYAMA , Katsuhiko IZUMI , Katsumi ITO
IPC分类号： G01S7/4865 , G01S17/10 , G01S7/4863
摘要： The distance measurement system is a system for measuring a distance to a target by a time of flight of light using a plurality of distance measurement image pickup apparatuses. The plurality of distance measurement image pickup apparatuses emits pulsed light at different intervals having a relatively prime relationship. Further, an interval of pulsed light rays is set based on any one of (1) a value obtained by raising a prime number to a power of a natural number of 2 or more used as an exponent, (2) a value obtained by multiplying a prime number by a natural number of 2 or more used as an integer, and (3) a value obtained by multiplying the value obtained by raising the prime number to the power by a natural number of 2 or more used as an integer.
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2.发明申请公开(公告)号：US20220115910A1
公开(公告)日：2022-04-14
申请号：US17475639
申请日：2021-09-15
发明人： Kozo MASUDA , Katsuhiko IZUMI
摘要： A power transmission and reception system device includes: a first device including an outer surface on which a first image is represented; and a second device including an outer surface on which a second image is represented, the second device being placed on the first device. One of the first device and the second device is a power transmission device including a power transmission unit, and the other is a power reception device including a power reception unit. In a case where the power transmission device and the power reception device are positioned such that the first image and the second image are aligned, power can be fed such that a received voltage is greater than or equal to a predetermined value at the time of transmitting power to the power reception unit from the power transmission unit.
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3.发明申请公开(公告)号：US20230044712A1
公开(公告)日：2023-02-09
申请号：US17868169
申请日：2022-07-19
发明人： Katsumi ITO , Katsuhiko IZUMI , Hisataka SUGIYAMA
IPC分类号： G01S17/894 , G01S17/10
摘要： A distance measurement system includes a distance measurement device and an external processing device. Here, the distance measurement device receives reflected light from a subject for a plurality of exposure periods in a frame in which irradiation light is emitted, switches a plurality of distance calculation expressions according to an amount of charge measured for each exposure period, and calculates a measured distance to the subject from the amount of charge measured for each exposure period. The external processing device acquires the measured distance from the distance measurement device and performs data processing. Then, the external processing device predicts a measured distance including a distance error caused by an influence of multipath. The external processing device generates a correction expression for correcting the measured distance. The external processing device corrects the measured distance acquired from the distance measurement device using the correction expression.
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公开(公告)号：US20210364613A1
公开(公告)日：2021-11-25
申请号：US17214972
申请日：2021-03-29
发明人： Katsuhiko IZUMI , Takeshi IMAI
IPC分类号： G01S7/497 , G01S17/894
摘要： A distance measuring device includes: a light emitting unit that irradiates a subject; a light receiving unit that receives reflected light; a distance calculating unit that calculates a distance to the subject; a luminance calculating unit that calculates a luminance of the subject; an image processing unit that generates a distance image and a luminance image of the subject; a screen luminance calculating unit that calculates a screen luminance value from the luminance image; and a light source light emission determining unit that determines whether a light emission state of the light source is normal or abnormal. The light source light emission determining unit acquires a screen luminance value at the time of turning on the light source in a first frame, a screen luminance value at the time of turning off the light source in a second frame, and compares the screen luminance values of each of the frames.
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5.发明公开公开(公告)号：US20240159902A1
公开(公告)日：2024-05-16
申请号：US18378466
申请日：2023-10-10
发明人： Katsumi ITO , Hisataka SUGIYAMA , Katsuhiko IZUMI
IPC分类号： G01S17/10 , G01S7/4861 , G01S7/497
CPC分类号： G01S17/10 , G01S7/4861 , G01S7/497
摘要： A distance measurement device comprises an irradiation unit that irradiates a measurement light onto an object to be measured, a light receiving sensor that receives reflected light from the object to detect an exposure amount based on the reflected light, a memory unit that stores correction information indicating a correction formula set including a plurality of correction formulas and an applicable distance range of each correction formula, and a distance calculation unit that calculates the measurement distance to the object to be measured based on the exposure amount. The distance calculation unit performs, based on the correction information stored in the memory unit, a distance correction calculation to calculate a corrected measured distance by correcting the measured distance using the correction formula corresponding to the applicable distance range in which the measured distance is included among the plurality of correction formulas in the correction formula set.
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公开(公告)号：US20230057554A1
公开(公告)日：2023-02-23
申请号：US17863534
申请日：2022-07-13
发明人： Tsukasa TAKAHASHI , Katsuhiko IZUMI
IPC分类号： G01S17/894 , G01J5/00
摘要： 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.
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公开(公告)号：US20220342050A1
公开(公告)日：2022-10-27
申请号：US17714302
申请日：2022-04-06
发明人： Hisataka SUGIYAMA , Katsuhiko IZUMI , Katsumi ITO
IPC分类号： G01S7/4865 , G01S17/10 , G01S7/48
摘要： The distance measurement system is a system for measuring a distance to a target by a time of flight of light using a plurality of distance measurement image pickup apparatuses. The plurality of distance measurement image pickup apparatuses may emit pulsed light rays at a plurality of different pulse widths. Further, intervals of pulsed light rays from the plurality of distance measurement image pickup apparatuses are set to be proportional to pulse widths in the respective distance measurement image pickup apparatuses. Further, the respective distance measurement image pickup apparatuses emit pulsed light rays at intervals of the pulsed light rays corresponding to pulse widths and the intervals of the pulsed light rays different from each other.
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公开(公告)号：US20210003705A1
公开(公告)日：2021-01-07
申请号：US16858788
申请日：2020-04-27
发明人： Katsuhiko IZUMI
摘要： A three-dimensional distance measurement device includes a light emitting unit that irradiates a subject with light; a light receiving unit that detects reflected light from the subject; a distance calculation unit that calculates a three-dimensional distance to the subject on the basis of a transmission time of the detected reflected light; an image processing unit that generates a distance image of the subject on the basis of the calculated distance data; and a distance mode selection processing unit that selects a predetermined distance mode from a plurality of distance modes having different measurable distance ranges and sets a driving condition of the light emitting unit. By selecting a first distance mode in a first frame and selecting a second distance mode in a second frame, and by combining the distance data acquired in the respective frames, three-dimensional distance data of a frame to be output is generated.
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公开(公告)号：US20190073781A1
公开(公告)日：2019-03-07
申请号：US15984449
申请日：2018-05-21
IPC分类号： G06T7/521
摘要： A three-dimensional distance measurement apparatus include: a plurality of light sources 11 that irradiate light onto the subject; a light emission control unit 12 that controls light emission from a plurality of light sources; a light-receiving unit 13 that detects reflection light from the subject; a distance-calculating unit 14 that calculates a distance to the subject on the basis of a transmission time of reflection light; and an image processing unit 15 that creates a distance image of the subject on the basis of calculated distance data. The plurality of irradiation areas 3 onto which light from the light sources are irradiated are arranged to partially overlap only with the neighboring ones. The light emission control unit 12 individually turns on or off the light sources 11 or individually adjusts the emitted light amounts.
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