How to scale raw camera output?

brentr

With DepthAI-v2, we could get our Oak-D PoE cameras to output a scaled raw (BAYER) stream. With DepthAI-v3, we can output such streams at full sensor resolution, with:

cameraObject->raw.createOutputQueue(1, false);

The full-res stream saturates the network link out of the camera.

Is there any way to rescale/bin the output of a raw Camera stream?

Failing that, is there any way to disable selective aspects of the ISP?

Specifically, we need to disable color gamma correction.

Thanks!

OskarSonc

Hey brentr - at the moment, no. In DepthAI-v3 the raw output is the direct sensor stream, so it is not exposed through the ISP scaler path. If you need less bandwidth, the main supported option is to choose a smaller sensor mode at camera build time, if that sensor provides one. Otherwise you would need to reduce FPS or switch to an ISP/output stream.

Also, there is currently no public API to selectively disable individual ISP stages such as gamma correction. The exposed controls cover AE/AWB/focus and some image tuning, but not gamma bypass. So if you need Bayer data without gamma/color processing, the practical path in v3 is still to use raw and do the color pipeline on the host.

Thanks,
Oskar

brentr

We've got the IMX378 producing a raw 2024x1520 image now. Problem solved. Thanks!

OskarSonc

brentr happy to hear that!

Best,
Oskar