4.x
Merge pull request #14733 from SchultzC:3.4
python: 'cv2.' -> 'cv.' via 'import cv2 as cv'
samples: use findFile() in "python"
fix missing 0.5 factor in anisotropic segmentation tutorial
fix pylint warnings
Update and expand erosion / dilation tutorial
print() is a function in Python 3
Changed to integer division
FIx misc. source and comment typos