Common Calibration Errors

The following table shows some characteristic error distributions for common calibration errors. Most of them can be improved with a dynamic recalibration without calibrating the camera completely.

Error	Description	Example Error Distribution in Left Image	Example Error Distribution in Right Image
None	Very small error lines indicate a good calibration.
Epipolar Angle	Systematic errors pointing up and down. Enable the background recalibrator or perform a dynamic recalibration to fix this error.
Vergence Angle	Systematic errors pointing inwards or outwards on the pattern. Perform a dynamic recalibration to fix this error. Note that a similar error distribution can also be caused by an incorrect focal length or baseline. In that case a full recalibration might be required to improve the error.
Optical Axis Angle	Systematic errors pointing in a circle on the pattern. Perform a dynamic recalibration to fix this error.
Other	Relatively large, but non-systematic errors pointing in random directions on the pattern. Perform a full recalibration to improve this error.