Instance_num on Oak D cameras

Hi team,

We had our first field outing yesterday and learned a lot :partying_face:

Still a lot of bugs to iron out, but we’re going well. One thing I noticed when doing some post-processing is that the instance_num being sent with the OakImageMeta object appears to have a bug.

Specifically. RGB is instance_num 0, left is instance_num 1, right is instance_num 2 and the diff/depth is also instance_num 2.

Hey @gsainsbury86, thanks for pointing that out.

I did some investigation and found that is associated with the socket/sensor that streams comes from, with 0, 1, and 2 associated with RGB, LEFT, and RIGHT indeed. So, I believe it would not impact anything on the streams.

That said, it may not be the best metadata to be there. Do you have any suggestions?