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公开(公告)号：US11460561B2
公开(公告)日：2022-10-04
申请号：US16205420
申请日：2018-11-30
Applicant: TOPCON CORPORATION
Inventor： You Sasaki
Abstract: A technique is provided to enable check of calibrated condition of a total station (TS) having a laser scanner at a surveying site. The TS includes an optical system, a laser positioning part, a plane equation calculator, a laser scanner, a separation amount calculator, and an exterior orientation parameter calculator. The laser positioning part emits laser light on an object via the optical system to position the object. The plane equation calculator calculates an equation of a specific plane on the basis of result from the laser positioning part. The laser scanner scans the specific plane with laser light to obtain scanning points. The separation amount calculator calculates a separation amount of the respective scanning points from the specific plane. The exterior orientation parameter calculator calculates exterior orientation parameters of one or both of the laser positioning part and the laser scanner so that the separation amount will be small.
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公开(公告)号：US11385337B2
公开(公告)日：2022-07-12
申请号：US15850212
申请日：2017-12-21
Applicant: Topcon Corporation
Inventor： You Sasaki , Tadayuki Ito
Abstract: A method for calibrating unevenness of a plurality of measuring elements in an apparatus for evaluating road surface property having a plurality of measuring elements repeats steps of computing separation quantities from a calibration reference plane on a reference area regarding all measuring elements; determining a measuring element where the separation quantity is maximum from among all the measuring element to calibrate the measuring element such that a difference between point cloud data produced from a measurement value of the measuring element where the separation quantity is maximum and the calibration reference plane becomes equal or less than a predetermined value, producing a new calibration reference plane from the measurement values of the measuring elements including the calibrated measuring element, until RMS of point cloud data does not change.
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公开(公告)号：US10353072B2
公开(公告)日：2019-07-16
申请号：US15187291
申请日：2016-06-20
Applicant: TOPCON CORPORATION
Inventor： You Sasaki , Tadayuki Ito
Abstract: Detection of sunlight as noise is avoided in obtaining point clouds by using a laser scanner. A laser scanner controlling device includes a sun direction calculating unit 115, a brightness measuring unit 116, and a scan condition setting unit 118. The sun direction calculating unit 115 calculates the direction of the sun. The brightness measuring unit 116 measures the brightness of an image that contains the direction of the sun. The scan condition setting unit 118 sets a condition for restricting laser scanning in the direction of the sun when the brightness is not less than a predetermined threshold value.
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公开(公告)号：US12111156B2
公开(公告)日：2024-10-08
申请号：US16982837
申请日：2019-03-25
Applicant: Topcon Corporation
Inventor： You Sasaki
CPC classification number: G01C15/002 , G01C15/06 , G01S17/42 , G01S17/66
Abstract: A target device 20 includes: a prism 22 configured to reflect light incident on the prism in a direction identical to a direction of incidence of the light; a support part 21 configured to support the prism 22; and a plurality of direction indicators 23 formed on the prism 22 to indicate a direction of the prism. A surveying system 1 includes the target device 20 attached to a camera 11 of a UAV 10, and a surveying device 3 surveying the prism 22 as a target and taking a target image Tp including the prism 22 to detect the orientation of the UAV 10 based on the direction indicators 23 appearing in the target image.
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公开(公告)号：US11879976B2
公开(公告)日：2024-01-23
申请号：US17023416
申请日：2020-09-17
Applicant: Topcon Corporation
Inventor： You Sasaki
CPC classification number: G01S17/50 , E21B47/04 , E21B47/09 , G01S17/894 , G06T17/00 , E21B7/025 , E21B2200/20
Abstract: A technique enables easy quantitative evaluation for drilling operations. A civil engineering work data processing device includes a positioning data receiving unit, a three-dimensional model estimating unit, and a drilled depth calculator. The positioning data receiving unit receives positioning data obtained by performing positioning using laser light, on a drilling rod. The three-dimensional model estimating unit estimates a three-dimensional model of the drilling rod, on the basis of the positioning data. The drilled depth calculator calculates a depth of a hole generated in a civil engineering work target by the drilling rod, on the basis of the estimated three-dimensional model.
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Patent Agency Ranking
公开(公告)号：US11333764B2
公开(公告)日：2022-05-17
申请号：US16255235
申请日：2019-01-23
Applicant: TOPCON CORPORATION
Inventor： Nobuyuki Nishita , You Sasaki
IPC: G01S17/66 , G01C15/00 , G01C11/02 , G01C3/02 , G01S17/89 , G01C11/18 , G01S17/42 , B64D43/00 , G01S17/87
Abstract: The survey system includes a mobile body equipped with a scanner configured to perform scanning by a distance measuring light, a position measuring device configured to measure a position of the scanner, and a posture detecting device configured to detect a posture of the scanner, the posture detecting device includes an imaging unit configured to periodically acquire image data, a 3-axis angular velocity sensor configured to detect 3-axis posture angles of the scanner, and an arithmetic control unit, and the arithmetic control unit is configured to calculate posture information of the scanner by summing photographing-time 3-axis posture angles (SP0, SP1, SPn) of the scanner acquired in each photographing by image analysis of the image data, and 3-axis posture relative displacement angles of the scanner calculated from detection values of the 3-axis angular velocity sensor.
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公开(公告)号：US11048276B2
公开(公告)日：2021-06-29
申请号：US16160187
申请日：2018-10-15
Applicant: TOPCON CORPORATION
Inventor： You Sasaki
Abstract: Objects of the present disclosure include providing a technique which can efficiently guide an unmanned aerial vehicle to a particular part of a target object. Provided is a control device for an unmanned aerial vehicle including a camera. The control device comprises a bright spot detection unit configured to detect, from an image captured by camera, a bright spot generated by a laser pointer; a flight control unit configured to perform, based on position of the bright spot in the image, flight control over the unmanned aerial vehicle. In such structure, the camera detects the bright spot, generated by the irradiation of spot-type indicating laser beam from the total station, on a wall surface, and the flight control over the unmanned aerial vehicle is performed in a manner that the unmanned aerial vehicle follows the bright spot.
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公开(公告)号：US10514254B2
公开(公告)日：2019-12-24
申请号：US15423785
申请日：2017-02-03
Applicant: TOPCON CORPORATION
Inventor： You Sasaki , Tadayuki Ito
Abstract: To rapidly and reliably measure a road surface property using measurement results and determination results of a road surface in the past. A vehicle mounted with a road surface property acquiring device is guided to a specified point on a road and measurement is carried out. The past road surface data on a past road surface property is acquired, a present position of the vehicle is acquired, and a past road surface property image representing a feature amount of the road surface property in a range including the present position created based on the past road surface data is displayed; and the vehicle is guided from the present position to a specified area while measuring a state of the road surface with the road surface property acquiring device.
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公开(公告)号：US20190383944A1
公开(公告)日：2019-12-19
申请号：US16435608
申请日：2019-06-10
Applicant: TOPCON CORPORATION
Inventor： You Sasaki
Abstract: Point cloud data that is missed due to an optical reflection object in measuring point cloud data using a laser scanner is used. A reflection object position calculating device includes a point cloud data receiving unit, a three-dimensional point cloud model generating unit, a missing data part searching unit, a missing data part determining unit, and a reflection object position calculator. The point cloud data receiving unit receives point cloud data. The three-dimensional point cloud model generating unit generates a three-dimensional point cloud model from the received point cloud data. The missing data part searching unit searches for a missing data part of the generated three-dimensional point cloud model. The missing data part determining unit determines whether the found missing data part has a predetermined specific shape. The reflection object position calculator calculates three-dimensional coordinates of the missing data part that is determined as having the specific shape.
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公开(公告)号：US10176615B2
公开(公告)日：2019-01-08
申请号：US15377187
申请日：2016-12-13
Applicant: TOPCON CORPORATION
Inventor： Tadayuki Ito , You Sasaki , Takahiro Komeichi , Naoki Morikawa
Abstract: Problems occurring due to a difference in point of view between cameras in compositing a panoramic image by using multiple images taken by the cameras are solved. An image processing device includes an image data receiving unit 101, a panoramic image generating unit 102, a designation receiving unit 103, and a single photographic image selecting unit 105. The image data receiving unit 101 receives data of a first still image and a second still image. The panoramic image generating unit 102 projects the first still image and the second still image on a projection sphere to generate a composited image. The designation receiving unit 103 receives designation of a specific position in the panoramic image. The single photographic image selecting unit 105 selects one of the first still image and the second still image, which contains the designated position received by the designation receiving unit 103.
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