Test Example:
##Image-test:
##Image-reference:
##MSE image of the Image-test:
(YELLOW means big variance, BLUE means small variance)
MSE: 687.8511079256771
dif_./tests/living-room_pfmlt_m310_6629s.png
different data:
max : 255
min : 0
mean : 81.41470052083334