labelme标注的多边形json文件批量化转txtx文件_labelme转换txt的脚本

import json
import os
 
def json_to_txt(json_path, txt_path):
    with open(json_path, 'r') as json_file:
        data = json.load(json_file)
 
    with open(txt_path, 'w') as txt_file:
        for shape in data['shapes']:
            if shape['shape_type'] == 'polygon':
                points = shape['points']
                label = shape['label']
                txt_file.write(f"{label} {' '.join([f'{x},{y}' for x, y in points])}\n")
 
def batch_convert_json_to_txt(json_folder, txt_folder):
    os.makedirs(txt_folder, exist_ok=True)
 
    for json_file in os.listdir(json_folder):
        if json_file.endswith('.json'):
            json_path = os.path.join(json_folder, json_file)
            txt_file = os.path.splitext(json_file)[0] + '.txt'
            txt_path = os.path.join(txt_folder, txt_file)
 
            json_to_txt(json_path, txt_path)
 
if __name__ == "__main__":
    json_folder = r'/path/to/json/folder'
    txt_folder = r'/path/to/txt/folder'
 
    batch_convert_json_to_txt(json_folder, txt_folder)

请注意替换/path/to/json/folder和/path/to/txt/folder为你实际的文件夹路径。

第一个为你json文件存放的文件夹路径，第二个为转换为txt路径后存放的文件夹路径，路径建议用绝对路径