When I extract frame metadata using
vmeta-extract, the output altitude appears to be derived from GPS (WGS84).
When I look at the .json exported from the ground control station (flight metadata as opposed to frame metadata), altitude appears to be height above takeoff location. How is this value actually calculated? Is it just GPS differencing? Barometer?
My understanding is that true AGL can’t be calculated here without a DEM, correct?
Product: Anafi USA
SDK/Pdraw/vmeta built from GitHub yesterday. This is relevant to dev work because these values must be know to create MISB compliant video.