python用opencv将标注提取画框到对应的图像中

# 通过os.walk()读取文件夹以及相应的文件列表
def get_file_list(path):
    file_list=[]
    for dir_list,folder,file in os.walk(path):
        file_list=file
    return file_list

#通过os.listdir()读取文件夹下的文件列表
def get_file_list2(path):
    file_list=os.listdir(path)
    return file_list
file_list=get_file_list2(r"E:\temp\AI\label")
print(file_list)

{
  "version": "3.16.5",
  "flags": {},
  "shapes": [
    {
      "label": "0",
      "line_color": null,
      "fill_color": null,
      "points": [
        [
          2720.0,
          1094.0
        ],
        [
          2768.0,
          1158.0
        ]
      ],
      "shape_type": "rectangle",
      "flags": {}
    }
  ],
...
}

import json
import cv2
path_label=r"E:\temp\AI\label"
path_img=r"E:\temp\AI\image"
path_result=r"E:\temp\AI\result"
# 通过遍历将图像纷纷画框
for file in file_list:
    txt=open(os.path.join(path_label,file))
    load_json=json.load(txt)
    for shape in load_json["shapes"]:
        left_top=(int(shape["points"][0][0]),int(shape["points"][0][1]))
        right_bottom=(int(shape["points"][1][0]),int(shape["points"][1][1]))
        #对象进行画框
        img_name=file.split(".")[0]+".jpeg"
        img=cv2.imread(os.path.join(os.path.join(path_img,img_name)))
        cv2.rectangle(img, left_top,right_bottom, (0, 255, 0), 2)
        cv2.imwrite(os.path.join(path_result,img_name), img)