Title:
HEIGHT-ABOVE-GROUND-LEVEL MEASUREMENT METHOD, HEIGHT-ABOVE-GROUND-LEVEL MEASUREMENT DEVICE AND PROGRAM
Document Type and Number:
WIPO Patent Application WO/2021/038647
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide: a height-above-ground-level measurement method capable of measuring the lowest height above ground level of a cable even when the three-dimensional point group data of the cable is insufficient; a height-above-ground-level measurement device; and a program. This height-above-ground-level measurement method is capable of obtaining three-dimensional point group data for a cable by forming a measurement range of a prescribed size above (height at which cable is positioned) the travel trajectory of a MMS. The number of three-dimensional point groups included in said measurement range is counted, and when the number equals or exceeds a threshold, the height thereof is measured as the measurement target. This height-above-ground-level measurement method does not model on the basis of three-dimensional point group data, and as a result, is capable of measuring the lowest height above ground level of the cable even when the three-dimensional point group data of the cable is insufficient.
Inventors:
GOTO YUKIHIRO (JP)
HONDA RYUJI (JP)
WAKI MASAKI (JP)
GOTO TAKASHI (JP)
HONDA RYUJI (JP)
WAKI MASAKI (JP)
GOTO TAKASHI (JP)
Application Number:
PCT/JP2019/033140
Publication Date:
March 04, 2021
Filing Date:
August 23, 2019
Export Citation:
Assignee:
NIPPON TELEGRAPH & TELEPHONE (JP)
International Classes:
G01C5/00; G01B21/02
Foreign References:
| JP2017156179A | 2017-09-07 | |||
| JP2018005579A | 2018-01-11 | |||
| JP2018097424A | 2018-06-21 |
Attorney, Agent or Firm:
OKADA, Kenji et al. (JP)
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