CameraCalibrator object is used for camera calibration and correction of image distortion. To create this object, call
To correct the distortion, perform a calibration or just load the calibrated parameters using the
CameraCalibrator.loadCameraParameters member function. After that, correct the image distortion using the
CameraCalibrator.undistort member function.
For calibration print a calibration template and fix it on a flat surface, preferably black.
There are three pattern types:
- asymmetric circles grid pattern
- chessboard pattern
- circles grid pattern
Here are examples of the patterns:
Full size images are stored in the share/calibration directory.
We recommend you to use the asymmetric circles grid pattern.
Before calibration initialize the
CameraCalibrator object by calling the
CameraCalibrator.initCalibration member function. Then capture the pattern in different poses with the camera you chose to calibrate and provide the captured frames in
You can get the approximate progress of pattern pose space coverage using
CameraCalibrator.getPatternSpaceCoverProgress member function. Using the
CameraCalibrator.getTip member function you can get a tip, what pattern pose is required.
Then call the
After a successful calibration view the results by calling the
CameraCalibrator.undistort method. If the result is appropriate, save the calibrated parameters using the
CameraCalibrator.saveCameraParameters method. Otherwise, add more images and perform a calibration again.
To reset the calibration, call the
CameraCalibrator.initCalibration method again.