Hello,
I am trying to calibrate an Opto-E telecentric lens on VBAI.
On the mechanical setup, everything is fine. Telecentric lens, suitable industrial camera, telecentric illumination etc.
Using a certificated dot calibration plate with 0.001mm accuracy.
The system itself is quite fine. When I make a simple pixel to mm calibration, the maximum error with a Johnson gauge is 0.025mm.
I need a better accuracy so I try to use Distortion Model with the calibration plate.
With the same pictures, using Distortion Model calibration, the maximum erorr becomes 0.090mm. It needs to be getting better but the reality is the reverse..
The lens itself with only a simple coefficient is better than a VBAI corrected calibration, calibration results a negative effect.
Is there anyone who made a micron-grade accurate calibration on all over the FOV with a telecentric lens using VBAI/Labview?