Hello everyone,
I need to calibrate 2 cameras in order to do some image processing (stereoscopy). I have been following the "Camera Calibration" tutorial written on openCV for this (https://docs.opencv.org/3.3.0/dc/dbb/tutorial_py_calibration.html). In the explanation, it is written that we need many different pattern for a correct calibration. As I understand it, I need to take at least 10 pictures (or more), with different positions and orientations of the Chessboard, in order to get a good calibration. Is that correct ?
It is also explained that the Z component of the 3D points from the real world space is always supposed to be 0. I am not sure to understand how we can assume that the Z component is always 0 if we need to move the chessboard between 2 pictures ?
If anyone understands this, please help me out, I haven't been able to find it anywhere...