Caliper FAQs

NI Vision Builder

Measure Features Tab

Caliper FAQs

Q: The Reposition Region of Interest and Reference Coordinate System controls are dimmed. How can I make these options available?

Insert a Set Coordinate System step before this step to make the Reposition Region of Interest and Reference Coordinate System controls available.

Q: The Caliper step returns results in pixels. How can I get measurements returned in the physical unit I want?

Insert a Calibrate Image step before this step to get distance measurements in real-world units. Using the Calibrate Image step, you can specify a calibration ratio, measurement unit, and type of distortion correction, if necessary.