[neallewis]

Originally Posted by smokes

I would love to know the mathematics behind using four cameras as a frame of refrence and where the processing is done on board the quad or on a laptop output xyz co ordinates to the quad.

The processing won't be done on the quads. They may however receive control data from some back end system. Those quads wern't flying full autonomously during all their tricks. I think they were being switch from manual control to computer control, and back, as he needed to perform his tricks.