Problems with OAK-FFC-4P distortion correction

Elusive

I use the camRgb.setMeshSource(dai.CameraProperties.WarpMeshSource.CALIBRATION) method in the Colour Camera Aberration Correction demo to do the aberration correction, but I find that the aberration correction I get this way isn't very good, and that there's still aberration correction There is still the problem of over-correction and under-correction, how should I adjust it, and can the code be modified?

jakaskerl

Hi @Elusive
You are using the Camera node right? It seems to me that the FFC hasn't been calibrated with the RGB camera present.
FFC devices need calibration even when not using stereo as the procedure calibrates for the intrinsic parameters of active cameras as well. And in your case, it seems like these intrinsics are off (were computed for a different sensor/lens).

Thanks,
Jaka

Elusive

You mean I will get better distortion correction results after calibration? Can you send me a demo of the calibration method?

jakaskerl

Hi @Elusive
Here is our calibration guide. Make sure to enable RGB (it's enabled by default) to calibrate its parameters (intrinsics/distortion coeffs).

Thanks,
Jaka