For example, in this [tutorial](http://opencv-python-tutroals.readthedocs.io/en/latest/py_tutorials/py_calib3d/py_calibration/py_calibration.html), I have some problems in understanding the `cv2.getOptimalNewCameraMatrix`. Already read the documentation and made some search, but I still can't understand it. I don't get the meaning of the return of this function: >Returns the new camera matrix based on the free scaling parameter
What does "free scaling parameter" means?
I hope someone can give explanation and maybe some examples on this. Thanks.
↧