I am processing two datasets for a pair of medium sized ~15ha hospital site in the UK.
Each sites has its own local coordinate system which involves a subtraction from the OSGB36 position to put the origin less than a km to South West of each site (all coordinates positive). All my data including photos, laser scans and GCPs are in this local coordinate system.
I have seen what ContextCapture uses as an internal local coordinate system is centred on the dataset. Do I need to create a custom user coordinate system to ensure the site local coordinates will be used instead of the internal application local ENU?