Patent ID: 11893721
Assignee: NIKON-TRIMBLE CO., LTD.
Field: Measurement (Instruments)
Classification: CPC G  H | IPC G  H

Claim 8:
9. The defect detection apparatus according to claim 1, further comprising the surveying instrument, which includes
a surveying unit that surveys the structure,
an imaging unit that images the structure,
a horizontal angle drive unit that rotates the surveying unit and the imaging unit around a vertical axis of the surveying instrument,
a vertical angle drive unit that rotates the surveying unit and the imaging unit around a horizontal axis of the surveying instrument,
an angle detection unit that detects an angle in a collimation direction with respect to a reference direction, and
a control unit that controls the horizontal angle drive unit and the vertical angle drive unit, and controls the imaging unit to generate external appearance image data by imaging the structure.