def convert_coco_category(category_id):
    """
    Convert continuous coco class id to discontinuous coco category id (0..79 --> 0..90)
    """
    match = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10,
             11, 13, 14, 15, 16, 17, 18, 19, 20, 21,
             22, 23, 24, 25, 27, 28, 31, 32, 33, 34,
             35, 36, 37, 38, 39, 40, 41, 42, 43, 44,
             46, 47, 48, 49, 50, 51, 52, 53, 54, 55,
             56, 57, 58, 59, 60, 61, 62, 63, 64, 65,
             67, 70, 72, 73, 74, 75, 76, 77, 78, 79,
             80, 81, 82, 84, 85, 86, 87, 88, 89, 90]
    category_id = match[category_id]
    return category_id