Re: Telemetry Camera Orientation Definitions
on 08-04-2020 02:08 PM
The reason there are no definitions is the camera can potentially record any type of data, and is also able to label the data so that it is self-explanatory, but that's not the case with the orientation streams, generally. The components are just labelled "CameraOrientation" , "1", "2" and "3" precisely because the camera does not label them, so the extractor just gives them numbers so they can be identified.
According to GoPro ( https://github.com/gopro/gpmf-parser#hero8-black-v12-adds-removes-changes-otherwise-supports-all-her... ) that stream is expressed in quaternions. I personally find them very complicated, so here's some background on what they are: https://youtu.be/d4EgbgTm0Bg
Finding out the orientation of the camera relative to the velocity involves some challenges. You could also use a combination of the gyroscope and the accelerometer sensors. Anyway, it will be interesting to see your progress, so feel free to post updates here.