some questions in face_seg.py.....

[Rettichhuang]

hi,in your face_seg.py ,u write :in_ -= np.array((104.00698793,116.66876762,122.67891434))
can u explain the meaning of three numbers in the brackets
thanks a lot~

[Yuval Nirkin]

Those 3 numbers are the mean pixel color of the training dataset.
Subtracting the mean from the data is a basic preprocessing operation that helps the training converge.