Topcon Corporation

Kabushiki Kaisha Topcon

You Sasaki

Tadayuki Ito

Kazuhiro Ogawa

Nobuyuki Nishita

Shigeyuki Yamaguchi

Ryousuke Miyoshi

Nobuyuki Fukaya

Hiroto Shibuya

Hiroyuki Konno

Jeffrey Robert DeBoer

Kaoru Kumagai

Hitoshi Otani

Takeshi Sasaki

Yasushi Tanaka

Kazuki Osaragi

Kazunori Sato

Takaaki Yamazaki

Takahiro Komeichi

Jun Sasagawa

Naoki Morikawa

Yasuhito Haijima

Hiroyuki Ikegami

Naoto Kasori

In order to monitor operation situations of site resources at a construction site efficiently, a measuring system uses a surveying apparatusincluding a camera and a position-determining function using laser light, and the measuring system includes a photographing means for continuously photographing construction machinestowhich are site resources for performing operations at a construction site by the camera, a recognizing means recognizing the site resources in photographed images obtained by the photographing, a tracking means for tracking the image of the site resources recognized in the multiple photographed images obtained by the continuous photographing, and a position-determining means collimating to the site resources which are objects for the tracking, and determining the positions of site resources by the position-determining function, in which the determining of positions is performed multiple times at intervals.

Measuring system, measuring method, and measuring program

Efficiency of a technique for performing laser scanning and photography simultaneously is improved. A laser scanning apparatus includes a horizontally rotatable horizontal rotation unit, a rotation controller, and a processor or circuitry. The horizontal rotation unit includes cameras and a vertical rotation unit that performs laser scanning in an upper-lower direction. The rotation controller controls rotation of the horizontal rotation unit. The processor or circuitry performs a process of not selecting some pieces of laser scanning data that is obtained by laser scanning in the upper-lower direction. Laser scanning and photography that uses the cameras are performed while the horizontal rotation unit is horizontally rotated. The rotation of the horizontal rotation unit is decelerated in performing photography. The processor or circuitry does not select some pieces of laser scanning data that are obtained by laser scanning in the upper-lower direction during the deceleration.

Laser scanning apparatus, laser scanning method, and laser scanning program

A target deviceincludes: a prismconfigured to reflect light incident on the prism in a direction identical to a direction of incidence of the light; a support partconfigured to support the prism; and a plurality of direction indicatorsformed on the prismto indicate a direction of the prism. A surveying systemincludes the target deviceattached to a cameraof a UAV, and a surveying devicesurveying the prismas a target and taking a target image Tp including the prismto detect the orientation of the UAVbased on the direction indicatorsappearing in the target image.

Target device and surveying system

A technique enables a surveying device to acquire a direction of a target by using as little extra hardware as possible. A method aims a laser scanner, as a surveying device, at a reflective prism that is a target. The method includes obtaining a photographic image of the laser scanner that is captured by a smartphone from the reflective prism side and determining a direction of the reflective prism as seen from the laser scanner on the basis of the photographic image. The method also includes rotating the laser scanner to make the laser scanner face the reflective prism straight on, on the basis of the direction of the reflective prism as seen from the laser scanner.

Target direction determining device, control system, and method and program for aiming surveying device at a target

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.

Civil engineering work data processing device, civil engineering work data processing method, and civil engineering work data processing program

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.

Surveying device, surveying method, and surveying program

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.

Surveying apparatus, surveying method, and surveying program

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.

Reflection object position calculating device, reflection object position calculating method, and reflection object position calculating program

A surveying apparatus has a combined structure of a total station and a laser scanner. The surveying apparatus includes a point cloud data acquiring unit, an abnormal part detecting unit, an abnormal part position acquiring unit, and an automatic sighting controller. The point cloud data acquiring unit acquires first point cloud data and second point cloud data obtained by laser scanning that is performed on an object to be inspected at a time interval. The abnormal part detecting unit calculates a difference between the first and second point cloud data to detect a part of the object to be inspected, at which position information varies, as a detailed-inspection target part. The abnormal part position acquiring unit acquires a position of the detailed-inspection target part. The automatic sighting controller controls to make the total station sight the detailed-inspection target part, based on the position of the detailed-inspection target part.

Surveying apparatus

Point cloud data relating to a matching target is efficiently eliminated after completion of a process of matching between sets of point cloud data obtained at different viewpoints. The surveying data processing device includes a target detecting unit, a location acquiring unit, a point cloud data eliminating region setting unit, and a point cloud data eliminating unit. The target detecting unit detects a target in point cloud data. The point cloud data is obtained by emitting laser light on an object having the target and by detecting the light reflected back from the object. The target location acquiring unit acquires a location of the detected target. The point cloud data eliminating region setting unit sets a point cloud data eliminating region containing the target, based on the location of the target. The point cloud data eliminating unit eliminates point cloud data contained in the point cloud data eliminating region.

Surveying data processing device, surveying data processing method, and surveying data processing program

Detection of a target by a surveying device is automated to achieve simple work. A surveying method uses a surveying device for detecting and identifying a target device having an entire circumference reflection prism and a code display that is arranged in a vertical direction. The surveying device has a laser scanner configured to perform laser scanning along a vertical plane while horizontally rotating. The surveying method includes performing laser scanning by emitting laser scanning light along the vertical plane while making the surveying device horizontally rotate, and detecting the code display on the basis of the laser scanning light that is reflected back.

Method, device, and program for surveying

A surveying data processing device includes a point cloud data acquiring unit, a three-dimensional model acquiring unit, a first correspondence relationship determining unit, an extended three-dimensional data generating unit, and a second correspondence relationship determining unit. The point cloud data acquiring unit acquires first point cloud data obtained by laser scanning, at a first viewpoint, and acquires second point cloud data obtained by laser scanning, at a second viewpoint. The three-dimensional model acquiring unit acquires data of a three-dimensional model. The first correspondence relationship determining unit obtains a correspondence relationship between the first point cloud data and the three-dimensional model. The extended three-dimensional data generating unit generates extended three-dimensional data in which the first point cloud data is extended, on the basis of the correspondence relationship. The second correspondence relationship determining unit determines a correspondence relationship between the extended three-dimensional data and the second point cloud data.

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.

Surveying device, and calibration method and calibration program for surveying device

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.

Method for calibrating measuring element, method for evaluating road surface properties, and apparatus for evaluating road surface properties

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 (SP, SP, 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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Tokyo, Japan

You Sasaki