This is a follow on post from this one started earlier in the year:
In the mean time I have added some survey data with a Distox2 to align the model to giving it scale in meters and alignment to magnetic North. The results were quite pleasing from a surveyors point of view aligning to with 0.2m for the 4 points used.
Alignment was achieved using a 7 parameter transformation in CloudCompare meaning the model is now more than just a visual representation. Work is ongoing to complete a model for all passages at this site.
A trackplot for the flythrough was created and added as an overlay to the video to give an indication of location at any given time, this was done in DashWare, an excellent free video editing program.