def _dota_category():
    """
    Get class id to category id map and category id
    to category name map of dota dataset
    """
    catid2name = {
        0: 'background',
        1: 'plane',
        2: 'baseball-diamond',
        3: 'bridge',
        4: 'ground-track-field',
        5: 'small-vehicle',
        6: 'large-vehicle',
        7: 'ship',
        8: 'tennis-court',
        9: 'basketball-court',
        10: 'storage-tank',
        11: 'soccer-ball-field',
        12: 'roundabout',
        13: 'harbor',
        14: 'swimming-pool',
        15: 'helicopter'
    }
    catid2name.pop(0)
    clsid2catid = {i: i + 1 for i in range(len(catid2name))}
    return clsid2catid, catid2name

    Get class id to category id map and category id
    to category name map of dota dataset
    
ppdet/data/source/category.py