Measuring (also called gauging) plays an important role in many applications ranging from part inspection to robot vision. To obtain accurate measurements of planar surfaces with arbitrary orientation the vision system must be calibrated to the given angle.





The Task   ... is to measure the distance between the markings on a calliper rule. To show the power of the calibration the camera is pointed in an oblique angle at the plane of measurement (about 20 degrees).

image of rule the camera is pointed at an angle, resulting in a significant perspective distortion (the right part of the rule is closer to the camera and therefore appears larger)



Used ActivVisionTools:    ActivView, ActivMeasure, ActivGeoCalib, ActivDataView


The Solution    ... starts here.

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