Emitter on/off mode

Maxrbtx

Sorry to bring up a main competitor here, but this is some extremely nice functionality I've seen on realsense cameras. They have an emitter on/off mode, which allows to get clean depth, but also get mono images without the projected on them. The image frames carry the metadata of the projector being on/off. This is great for visual slam. Are you guys planning on implementing this at all? Thanks

OskarSonc

Hey Maxrbtx - we do have most of this already on OAK Pro devices, you can turn the dot projector and flood on/off at runtime, and we even have an example that alternates illumination on a frame-by-frame basis using frameEvent, which is useful for SLAM-style pipelines. What we don’t currently expose, afaik, is a dedicated per-frame metadata flag that says ‘emitter on/off’ in the image message itself.

Thanks,
Oskar

Maxrbtx

Hey OskarSonc thanks! I found the example in the V2 docs, and was able to get this working using that v2 example. Compiler does say these are deprecated functions being used to replicate that example. Are there V3 alternatives? I'm using an Oak D Pro

OskarSonc

Hey Maxrbtx - there isn’t currently a direct v3 example for the per-frame IR alternation pattern. The closest reference for that exact workflow is mono_preview_alternate_pro.py. For v3, the example we do have is the projector-control example projectors.py, but it doesn’t show frame-by-frame alternation.

Could you paste the exact deprecation warnings you’re seeing, and also which DepthAI v2 version you’re using? I tried it and didn't get any warnings...

Thanks,
Oskar

Maxrbtx

I'm using the V3 library, that's why I got the warnings. Thanks again, Max