Explore turntable-aware reconstruction handoff

[gsrunion]

Proposal:

• Investigate how OpenScan3 scan metadata can better support downstream turntable-aware reconstruction.

Scope:

• metadata/export design only
• not necessarily owning COLMAP/OpenMVS orchestration inside OpenScan3

Why:

• Turntable imagery often benefits from known pose/context during reconstruction
• Better handoff could make external reconstruction tooling much easier to drive

Potential outputs:

• cleaner exported pose metadata
• documented coordinate conventions
• export presets for downstream tooling

Prototype/reference code:

• openscan-pipeline/src/colmap_reconstruct.py

Note:

• current reconstruction prototype is exploratory and should be treated as context, not a proposed upstream implementation.