Precision of +/-0,3mm not reproducable

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ife
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Joined: Thu Oct 13, 2022 4:52 am

Precision of +/-0,3mm not reproducable

Post by ife »

Hello,

we are working on a project where we want to measure the distance of 2 points with the "Digitizing Probe" (https://optitrack.com/accessories/measurement-tools/). For this purpose we have two Prime 13W cameras in stereo mode. The cameras are approximately two meters in front of the measured area. Now we can observe if the distance of the 2 points, which should be measured, is about 2m the precision of +/-0.3mm cannot be reached. Especially if you recalibrate the system, we get another varying values with a precision of +/- 1mm. We have done over 200 measurements with more than 70 calibrations until now. Only within a calibration the values are stable.

Maybe someone can help us.
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