Recommended Average Reprojection Error

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aditya
Posts: 2
Joined: Fri May 03, 2019 3:02 pm

Recommended Average Reprojection Error

Post by aditya » Fri May 03, 2019 3:14 pm

Hello All!

I wanted to know what range reprojection errors are good enough for a typical stereo setup. I get around 0.1 - 0.3 after calibration so I wanted to know if this is the general trend or not.

Many thanks in advance!

Aditya
k.schauwecker
Posts: 12
Joined: Mon Mar 25, 2019 1:12 pm

Re: Recommended Average Reprojection Error

Post by k.schauwecker » Sun May 05, 2019 6:28 pm

Hi Aditya,

this depends on your camera resolution and lenses. For a 0.5 megapixel resolution and non-wide-angle lenses a value below 0.1 pixels indicates a very good calibration. For higher camera resolutions you must expect a larger error. Also, for wide angle lenses you will get higher errors due to the larger radial distortions. What lenses and resolution do you use?

Regards,
Konstantin
aditya
Posts: 2
Joined: Fri May 03, 2019 3:02 pm

Re: Recommended Average Reprojection Error

Post by aditya » Thu May 16, 2019 3:45 pm

We use cameras with a resolution of 1600 x 896 i.e. 1.4 MP and a wide angle lens of focal length 6mm and a FOV of 96.8 x 79.4 degrees.
k.schauwecker
Posts: 12
Joined: Mon Mar 25, 2019 1:12 pm

Re: Recommended Average Reprojection Error

Post by k.schauwecker » Thu May 16, 2019 3:47 pm

Hi Aditya,

96.8 x 79.4 is extreme wide angle (are you sure your FoV is this big?). At such configurations you need to expect somewhat higher reprojection errors. So I think you are within the range.

Regards
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