Mitsubishi Electric Corporation

Megumi Irie

Katsuyuki Kamei

Masashi Watanabe

Hiroyuki Tsutada

Junji Kondo

Hiroyuki Fujibayashi

The interior of a first measurement surface and the interior of a second measurement surface traveling together with a measuring vehicle are scanned to acquire first measurement coordinate points and second measurement coordinate points, respectively. A first comparison point cloud representing a comparison part on a surface of a structure is extracted from the first measurement coordinate points. A second comparison point cloud representing a comparison part on the surface of the structure is extracted from the second measurement coordinate points. A difference between the first comparison point cloud and the second comparison point cloud corresponding to measurement of a common comparison part on the surface of the structure is calculated. Error having time dependence included in the first measurement coordinate points and the second measurement coordinate points is calculated on the basis of the calculated difference. The measurement coordinate points are corrected on the basis of the calculated error.

Structure measuring device, measurement point correcting device, and measurement point correcting method

In a trolley-wire display device, a display reference point of point-group data is set for each point on a trolley wire having a height and a displacement measured based on a reference obtained from rails. First and second points on a track center line are used to calculate a first distance, and a third distance based on the first distance and a second distance. The first point corresponds to the display reference point. The second point corresponds to each point on the trolley wire. The first distance is a distance from the first point to each second point. The second distance is a distance from a positional start point to the first point. The third distance is a distance from the start point to each second point, and is used to create display data for displaying a height and a displacement of each point on the trolley wire.

Trolley-wire display device, trolley-wire display system, and trolley-wire display data creation method

A trolley-wire measurement device includes a rail detection unit to detect rails from point-group data that is an aggregate of points obtained by measuring a target object three-dimensionally, the rails defining a railway on which a train runs, a reference setting unit to set a reference for measuring a height and a displacement of a point on a trolley wire on the basis of the rails detected, a trolley-wire detection unit to detect the point on the trolley wire from the point-group data, and a height and displacement measurement unit to measure a height and a displacement of the point on the trolley wire by using the reference.

Trolley-wire measurement device and trolley-wire measurement method

A detection device includes: a crack detection unit to detect a deformation on a surface of a structure from image information on the structure; a step detection unit to detect a step on the surface of the structure from three-dimensional point group information on the structure measured with a laser; and a determination unit to determine a state of the deformation using information on the deformation generated by the crack detection unit and information on the step generated by the step detection unit.

Detection device and detection method

A detection apparatus improves abnormality detection accuracy after start of an inspection operation while reducing the amount of work that is done before the start of the operation. The apparatus includes an object characteristic storage device that stores a parameter indicating a characteristic of an abnormal object, an object detection unit that detects an abnormal object candidate from image information by using the parameter, an object storage unit that stores the abnormal object candidate, an object display unit that displays the abnormal object candidate stored in the object storage unit, a calibration input unit that receives input of calibration information on the abnormal object candidate, and, based on the calibration information, corrects the abnormal object candidate stored in the object storage unit, and an object characteristic calibration unit that calibrates the parameter stored in the object characteristic storage device, based on the calibration information received by the calibration input unit.

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Tokyo, Japan

Megumi Irie