Switzerland's EPFL has managed to catch our attention with its various UAV-related activities, and it looks like it's also been the radar of Parrot, maker of the AR.Drones. EPFL announced today that the French company is investing 7.4 million Swiss Francs (or about $7.5 million) in two companies that have been spun out of the institution: senseFly and Pix4D. As you may recall, those two have collaborated in the past, with senseFly providing the camera-equipped UAVs for Pix4D's 3D mapping s