def load_path(self, list_filename):
    lines = read_all_lines(list_filename)
    splits = [line.split() for line in lines]
    left_images = [x[0] for x in splits]
    right_images = [x[1] for x in splits]
    disp_images = [x[2] for x in splits]
    return (left_images, right_images, disp_images)
def load_path(self, list_filename):
    lines = read_all_lines(list_filename)
    splits = [line.split() for line in lines]
    left_images = [x[0] for x in splits]
    right_images = [x[1] for x in splits]
    disp_images = [x[2] for x in splits]
    return (left_images, right_images, disp_images)