先上效果图：
后面附上源代码：
弯曲
代码：
AdelaiDet-master\adet\data\datasets\text_view.py
# Copyright (c) Facebook, Inc. and its affiliates. All Rights Reserved
import contextlib
import io
import logging
import os
import cv2
from fvcore.common.timer import Timer
from fvcore.common.file_io import PathManager
from detectron2.structures import BoxMode
