def start():
filename = filedialog.askopenfilename()
img = cv2.imread(filename)
img = ImageProcessing.gray(img)
img = ImageProcessing.get_text_crop(img)
img = numpy.asarray(img)
img = ImageProcessing.blur(img)
img = ImageProcessing.adaptive_thresholding(img)
PIL.Image.fromarray(img).save("images\\3_.jpg")
img_thr = ImageProcessing.global_thresholding(img)
PIL.Image.fromarray(img_thr).save('images\\2_.jpg')
img_thr = PIL.Image.fromarray(img_thr)
ImageProcessing.print_text(img_thr)
