utils.py 文件源码

def dump_polygons(im_id: str, im_size: Tuple[int, int], polygons: MultiPolygon)\
        -> str:
    """ Save polygons for submission.
    """
    x_scaler, y_scaler = get_scalers(im_id, im_size)
    x_scaler = 1 / x_scaler
    y_scaler = 1 / y_scaler
    polygons = shapely.affinity.scale(
        polygons, xfact=x_scaler, yfact=y_scaler, origin=(0, 0, 0))
    return shapely.wkt.dumps(polygons)