Preprocessing of image - Saharsh007/Smile-Detection-on-Human-faces GitHub Wiki

load image https://stackoverflow.com/questions/38675389/python-opencv-how-to-load-all-images-from-folder-in-alphabetical-order

display loaded image https://stackoverflow.com/questions/19285562/python-opencv-imread-displaying-image

convert all images to a certain resolution https://stackoverflow.com/questions/44650888/resize-an-image-without-distortion-opencv/44659589

save train data to file https://stackoverflow.com/questions/899103/writing-a-list-to-a-file-with-python

load train data from file https://stackoverflow.com/questions/899103/writing-a-list-to-a-file-with-python