crop_center.py

def crop_center(image, crop_size):
    """ Crops the central region of the image with shape crop_size"""
    shape = image.shape

    start0 = shape[0]//2-(crop_size[0]//2)    
    start1 = shape[1]//2-(crop_size[1]//2)
    return img[start0:start0+crop_size[0],start1:start1+crop_size[1]]