OpenDroneMap / OpenDroneMap/ODM
Incorrect interpretation of DJI gimbal angles for triangulation sfm_algorithm
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- Dominant language
- Python
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Description
With sfm_algorithm set to tirangulation, oblique image sets from a DJI Mavic 3E produce a 3d point cloud with half the points on the ground and the other half at the same distance but above the camera positions. Turning on the camera icons in 3D view reveals that both, nadir and backwards-facing gimbal poses are interpreted as facing upwards.
setting sfm_algorithm to incremental does not produce this effect.
Contributor guide
First steps
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Research direction
Reproduce the issue with an oblique DJI Mavic 3E image set, comparing sfm_algorithm=triangulation with incremental. Trace how nadir and backwards-facing gimbal poses are interpreted and inspect the 3D camera view; done when triangulation no longer places half the points above the camera positions and the displayed poses face correctly.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- python
- Domain
- computer-vision
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 35/100