Calibrate Image FAQs

Q: Why do the calibrated measurements vary from part to part?

If the position of the parts in the inspection images varies considerably, enable the Relearn calibration at each iteration control. When this control is enabled, the inspection relearns calibration information based on the new coordinates of the selected points during each iteration of the inspection.

Note  To enable the Relearn calibration at each iteration control, you must select points defined in previous step instead of defining your own points.

Q: Is it possible to configure Vision Builder AI to periodically recalibrate the vision system?

Yes. One method to implement this feature consists of configuring two separate inspections.

• The first inspection is dedicated to system calibration, and can locate features disposed at known locations in the image. A calibration step uses these points of reference to learn a new calibration, and saves the calibrated image to file.
• The second inspection performs visual inspection tasks on calibrated images. The images are calibrated using the Calibrate from Image setting and the calibrated image saved from the first inspection.

Refer to How to Automatically Select which Inspection to Run to learn how to switch between inspections.