Patent ID: 11879976
Assignee: TOPCON CORPORATION
Field: Measurement (Instruments)
Classification: CPC G  E | IPC E  G

Claim 2:
3. A non-transitory computer recording medium storing computer executable instructions for processing laser point cloud data of a drilling rod, the laser point cloud data being obtained by LiDAR while the drilling rod performs drilling operation on a civil engineering work target,
the drilling rod being configured to be driven by a driving unit,
the drilling rod being movable back and forth in an axial direction relative to the driving unit,
a trailing end of the drilling rod protruding from the driving unit,
the computer executable instructions that, when executed by a computer processor, cause the computer processor to:
receive the laser point cloud data that is obtained from a range containing the trailing end of the drilling rod, which protrudes from the driving unit;
estimate a three-dimensional model of the drilling rod on a basis of the laser point cloud data; and
calculate a depth of a hole that is generated by the drilling rod by determining a displacement of the position of the trailing end of the drilling rod on a basis of the estimated three-dimensional model.