optional arguments:
  -h, -- help            show this help message and exit
  -l LEFT_IMG, -- left_img LEFT_IMG path to the left images directory                        
  -r RIGHT_IMG, -- right_img RIGHT_IMG path to the right images directory

python single_calibrate.py -i /path/image_path -s False
False means that do not save the undistoted images.
If True, it will make a directory called `undistoted_images` in current dir.

python camera_calibrate.py -h
Assumption here is that given path contains two directories of chessboard images named left and right.

python rectify.py -h

python compute_depth.py
Assumption here is that givn path contains two directories of left and right rectified images.

python epipolar_lines.py -h