Calibration Resolution

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KieranMITDUT
Posts: 12
Joined: Sun Jun 09, 2019 2:15 am

Calibration Resolution

Post by KieranMITDUT » Sun Sep 01, 2019 9:13 pm

Nerian,

I wanted to ask quick if there were any recommendations as to what resolution you should calibrate the camera at? The system we have runs at 800x320 and I wasn't sure if it might be more accurate to calibrate at the highest resolution possible and then modify the yaml file to be instead for 800x320 (i.e can you get a better model of the lens that way).

-Kieran
k.schauwecker
Posts: 30
Joined: Mon Mar 25, 2019 1:12 pm

Re: Calibration Resolution

Post by k.schauwecker » Mon Sep 02, 2019 7:39 am

Hi Kieran,

it's not so easy to modify the YAML file, as you would have to convert both, the projection center and the measured focal length. I recommend calibrating at the resolution you are going to use. Please check the reprojection error that you get. For smaller image resolutions like the one you are using, a reprojection error below 0.1 pixels indicates a good calibration.

Regards,
Konstantin
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