Bridge underside inspection
Collision-tolerant drones with LiDAR inspect under-deck areas where GPS fails, producing crack-mapped 3D models.
VadodaraInfrastructure2024
- 0.2 mm
- crack width detected
- −80%
- inspection time
- 0
- rope-access hours
The challenge
Rope-access inspection was risky, slow and left no 3D record.
What we built
Visual-inertial navigation, a close-up camera gimbal and photogrammetry with crack segmentation.
Highlights
- Flies without GPS
- Cracks overlaid on the 3D model
- Repeat flights show growth
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