import argparse

import imgviz
import matplotlib.pyplot as plt
import numpy as np
import PIL.Image

from labelme.logger import logger


def main():
    parser = argparse.ArgumentParser(
        formatter_class=argparse.ArgumentDefaultsHelpFormatter
    )
    parser.add_argument("label_png", help="label PNG file")
    args = parser.parse_args()

    lbl = np.asarray(PIL.Image.open(args.label_png))

    logger.info("label shape: {}".format(lbl.shape))
    logger.info("unique label values: {}".format(np.unique(lbl)))

    lbl_viz = imgviz.label2rgb(lbl)
    plt.imshow(lbl_viz)
    plt.show()


if __name__ == "__main__":
    main()