How IMAQ convert pixel to real world work?

[tschua3]

Hi,

I wonder how IMAQ convert pixel to real world work? 

Refer to vision example Simple Calibration.vi, what is the actual formula used by "IMAQ convert pixel to real world" get the calibration axis(mm) from image axis (pixel)? Which calibration info is used in the formula.

[MangeshD · Accepted solution]

Are you looking for this thing?

https://zone.ni.com/reference/en-XX/help/370281M-01/nivisionlvbasics/perspective_and_nonlinear_disto...

[udka · Accepted solution]

Here you can get full info on How pixels to real world (Spatial Calibration) done.
http://zone.ni.com/reference/en-XX/help/372916T-01/TOC4.htm