Store image of actually used patterns, not only all corners that are detected initially (but potentially not used)

[adrian-bodenmann]

Store image of actually used patterns used for the calibration determined in if-clause at

oplab_pipeline/src/auv_cal/camera_calibrator.py

Line 792 in cf8c832

self.distortion = self.calibrations[best_idx]["distortion"]

Currently all detected corners are written to an image at

oplab_pipeline/src/auv_cal/camera_calibrator.py

Line 661 in cf8c832

cv2.imwrite(str(filename), all_detections)

This is also useful to have, but only having this will very likely make users believe that all these patterns were used.

Do the same for StereoCalibration class at

oplab_pipeline/src/auv_cal/camera_calibrator.py

Line 1319 in cf8c832

self.R = self.calibrations[best_idx]["R"]