Is there any initialization requirement for the pose data in Matedata?

[Happytreety]

Is there any initialization requirement for the pose data in Matedata? In my test, the rotation matrix of cam_to_world is different in different scenes, which makes me confused. My requirement is: walking in a relatively empty room, I can get a more accurate pose relationship relative to the initial position.

[marek-simonik]

I'm not entirely sure if I understood what you meant by "initialization requirement", so my answer might not be satisfying.

The poses which are stored in metadata, are taken from ARKit, so the origin of the coordinate system is determined by ARKit. If you want to "help" ARKit initialize the tracking, then you might try moving with your iPhone for a few seconds before you start recording in Record3D. This might help ARKit with initialization.

If you want to reset ARKit's tracking in Record3D, you can switch from the Record tab to the Settings tab and then switch back to the Record tab. Immediately upon switching to the Record tab, the ARKit tracking will be reinitialized (and that is when you should perhaps slowly move your iPhone for a few seconds to initialize tracking, as mentioned above).