VOXL 2 Stereo Calibration

[bendraper]

Hi all,

Trying to do a stereo camera calibration on a VOXL 2 and getting pretty large re-projection errors when calibrating the extrinsics but okay error for the individual cameras. Followed the documentation for calibrating the cameras and sifted through the forums but can't seem to find a solution to this. Is there a step to calibrating that isn't specified in the documentation? or is there a best practice for doing these calibrations? Thanks!

[bendraper]

the actual distance between cameras is about 0.0857 but that is not what it is calculating

[modaltb]

@bendraper ,

Sorry for the lag here, I'm cleaning up open topics and saw this message a bit late.... Any progress on this issue?

[bendraper]

@modaltb No problem! I think I'm getting close. Im pretty consistently getting a reprojection error ~0.6 at this point so still have yet to successfully calibrate stereo extrinsics. Tried new stereo cams, refocusing, different lighting, different scales of checkerboards, but can't get sub 0.5

[Cheng Sheng Weng]

I also have the same problem.

[bendraper]

Lol today it decided to finally work. error 0.39

[Adrian Hidalgo]

@bendraper Curious to know if some factors changed from the last time you got the large errors

[bendraper]

@Adrian-Hidalgo I redesigned the mounting piece for the cameras, used new refocused cameras, and fixed some errors in my general camera extrinsics file (although I'm not sure that last one is related)