-
公开(公告)号：US11725938B2
公开(公告)日：2023-08-15
申请号：US16917941
申请日：2020-07-01
Applicant: Topcon Corporation
Inventor： You Sasaki
CPC classification number: G01C15/006 , G01C15/06 , G01S7/4817 , G01S17/42
Abstract: Reselection of an instrument point, due to the limited emission range of a scanning laser light, is performed with decreased burden. A total station equipped with a laser scanner has a combined structure of a total station and a laser scanner. The total station equipped with the laser scanner includes a point cloud data acquiring unit, a distance acquiring unit, and an instrument point calculator. The point cloud data acquiring unit acquires point cloud data that is obtained through laser scanning performed by the laser scanner set up at a first instrument point. The distance acquiring unit acquires a distance to the laser scanner of each point in the point cloud data. The instrument point calculator calculates a location of a second instrument point on the basis of an upper limit of the distance.
-
12.发明申请公开(公告)号：US20220284608A1
公开(公告)日：2022-09-08
申请号：US17653632
申请日：2022-03-04
Applicant: Topcon Corporation
Inventor： You Sasaki
Abstract: Synchronizing between multiple optical data can be maintained by a facilitated method. An optical data processing operational unit 108 includes an optical data obtaining part 301 which obtains laser scan data by a laser scanner mounted on a moving body and image data of a photographed image photographed by a camera mounted on the moving body; and a delay time obtaining part 305 which calculates Δt when the point cloud image viewed from the viewpoint at time a specific time T made based on the laser scan data is obtained and the camera photographs with a delay Δt when the camera is ordered to photograph at time T; wherein relationships of exterior orientation elements of the laser scanner and the camera are known, and Δt is calculated in a condition in which difference in overlapping degree of the point cloud image and the photographed image is minimal.
-
13.发明授权公开(公告)号：US11307031B2
公开(公告)日：2022-04-19
申请号：US16168924
申请日：2018-10-24
Applicant: TOPCON CORPORATION
Inventor： You Sasaki , Yasushi Tanaka , Nobuyuki Nishita
IPC: G01S17/10 , G01S17/89 , G01S7/48 , G01C15/00 , G02B23/10 , G01S7/51 , G01S7/481 , G01S17/87 , G01C3/08 , G01S7/497 , G01C1/02 , G01S17/42
Abstract: A technique is provided to enable check of a calibrated condition of a total station (TS) having a laser scanner in a surveying site. The TS includes an optical system for sighting an object, a laser positioning part that irradiates the object with laser light via the optical system to position the object, and a plane crossing location identifying part that identifies a crossing location of multiple planes constituting a three-dimensional structure as a first location, on the basis of the positioning result from the laser positioning part. The TS also includes a laser scanner that performs laser scanning in an area containing the crossing location, a plane crossing location calculator that calculates the crossing location as a second location on the basis of laser scanning data from the laser scanner, and a comparing part that compares the first location and the second location with each other.
-
公开(公告)号：US11221216B2
公开(公告)日：2022-01-11
申请号：US16963217
申请日：2019-02-14
Applicant: Topcon Corporation
Inventor： Takeshi Sasaki , Nobuyuki Fukaya , You Sasaki
Abstract: [Problem] To obtain high measurement accuracy in aerial photogrammetry while reducing the cost of installing a measurement target. [Solution] According to the present invention, a launching pad for an unmanned aircraft on which a UAV 200 is installed before take off is provided with: a target indication that constitutes a target locating point used for aerial photogrammetry; and position determining units that determine the position of the UAV 200 with respect to the launching pad in a state in which the position of the UAV 200 with respect to the target indication before take off is specified.
-
公开(公告)号：US10767990B2
公开(公告)日：2020-09-08
申请号：US15923104
申请日：2018-03-16
Applicant: TOPCON CORPORATION
Inventor： You Sasaki
Abstract: Highly accurate aerial photogrammetry is performed while avoiding increase in cost. A survey data processing device includes an image data receiving part, a location data receiving part, an identification marker detecting part, an identifying part, and a location identifying part. The image data receiving part receives image data of aerial photographs of vehicles. The vehicles are equipped with GNSS location identifying units and identification markers, respectively. The location data receiving part receives location data of the vehicles that are identified by the respective GNSS location identifying units. The identification marker detecting part detects the identification markers of the vehicles from the image data. The identifying part identifies each of the vehicles in the aerial photographs. The location identifying part identifies locations of ground control points (GCPs) in the aerial photographs by using the location data of the vehicles and by using the identification information.
-
Patent Agency Ranking
公开(公告)号：US10697771B2
公开(公告)日：2020-06-30
申请号：US15890617
申请日：2018-02-07
Applicant: TOPCON CORPORATION
Inventor： Nobuyuki Nishita , Kazuki Osaragi , Yasuhito Haijima , You Sasaki , Hiroyuki Ikegami
Abstract: A survey system including a movable photographing device, a surveying device, and an analysis device. The movable photographing device includes a camera mounted on a UAV and taking a plurality of images P for photogrammetry, and a GPS unit including a first time stamping portion stamping a first time Tc relating to a photographing time on the image P taken. The surveying device determines a position of the movable photographing device, and includes a second time stamping portion stamping a second time Tt relating to a surveying time on a survey result R determined above. The analysis device includes a photographing position analysis portion associating each survey result R with a photographing position of the respective image P based on the first time Tc and the second time Tt, and generating data for photogrammetry.
-
17.发明授权公开(公告)号：US10578430B2
公开(公告)日：2020-03-03
申请号：US15423746
申请日：2017-02-03
Applicant: TOPCON CORPORATION
Inventor： You Sasaki , Kazuhiro Ogawa , Tadayuki Ito
Abstract: To carry out evaluation of a road surface property easily and in a short period of time without being costly. Measurement data of a road surface measured for a predetermined road width along a path of a road to be measured is acquired; a unit area having a preset length dimension along the path in the road width is set along the path; a model plane in the unit area is set based on the measurement data at each point in the unit area; point group data is generated from a spaced amount of the model plane and each point in the unit area, visualize and display the spaced amount in the path, and display a result of evaluation obtained through statistical processing with the path shown on a map.
-
公开(公告)号：US20170309050A1
公开(公告)日：2017-10-26
申请号：US15423817
申请日：2017-02-03
Applicant: TOPCON CORPORATION
Inventor： You Sasaki , Tadayuki Ito
CPC classification number: G06T11/60 , G06K9/00791 , G06K9/00798 , G06K9/4642 , G06K9/6212 , G06T11/001
Abstract: To efficiently and effectively display a plurality of pieces of information that can be acquired from measurement data. Measurement data on a spaced amount from a measurement reference plane at each point of a road measured for a predetermined road width along a measurement path of a road to be measured and road image data including the road acquired along the measurement path are acquired; a unit area to become a unit of processing is set based on the measurement data; a model plane in the unit area is set from the measurement data in the unit area; point group data indicating a spaced amount from the model plane at each point of the unit area is generated; spaced amount display data displaying shading or hue corresponding to a spaced amount specified with the point group data in a contour of the road is generated; and a road image based on road image data corresponding to a specified area of the road and a spaced amount image based on the spaced amount display data corresponding to the road image are simultaneously displayed.
-
公开(公告)号：US11859977B2
公开(公告)日：2024-01-02
申请号：US18183183
申请日：2023-03-14
Applicant: TOPCON CORPORATION
Inventor： You Sasaki
CPC classification number: G01C15/006 , G01C1/00 , G01C15/12 , G01S3/7861
Abstract: A technique that enables easily determining an attitude of a laser scanning apparatus is provided. A surveying device includes a sunlight incident direction measurement unit, a Sun direction acquisition unit, and an attitude calculator. The sunlight incident direction measurement unit measures an incident direction of sunlight that enters a laser scanning apparatus, based on a detected waveform of incident light entering the laser scanning apparatus. The Sun direction acquisition unit acquires a direction of the Sun as seen from the laser scanning apparatus, from astronomical data, based on a position of the laser scanning apparatus. The attitude calculator calculates an attitude of the laser scanning apparatus in an absolute coordinate system, based on the incident direction of sunlight and the direction of the Sun as seen from the laser scanning apparatus, which is acquired from the astronomical data.
-
公开(公告)号：US11703588B2
公开(公告)日：2023-07-18
申请号：US16435608
申请日：2019-06-10
Applicant: TOPCON CORPORATION
Inventor： You Sasaki
CPC classification number: G01S17/00 , G01B11/002 , G01B11/24 , G06T7/70 , G06T2207/10028
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.
-
-
-
-
-
-
-
-
-
Search Results
34
records
(took 0.019 seconds)
