alter_size

scale_factor = 0.73
def alter_size(mask, percent):
    """Adjust the percent paramater to find the largest 
    input image size that will work with your dataset  
    """
    h,w = mask.shape[:2]
    return cv2.resize(mask, (int(w * percent), int(h * percent)))
input_img = alter_size(input_img, scale_factor)
style_img = alter_size(style_img, scale_factor)
mask = alter_size(mask, scale_factor)
loose_mask = alter_size(loose_mask, scale_factor)
mask_smth = alter_size(mask_smth, scale_factor)