注意，这只是把单一123.jpg.json文件转化为123.txt
并没有把整体的json文件转换

import json# 读取JSON文件
json_file_path = r'G:\bsh\dataset\flame_test_dataset\train\annotations\259.jpg.json'
with open(json_file_path, 'r') as json_file:data = json.load(json_file)# 提取相关信息
image_width = data["width"]
image_height = data["height"]
objects = data["step_1"]["result"]# 创建YOLO格式文本
yolo_txt = ""
for obj in objects:x = obj["x"]y = obj["y"]width = obj["width"]height = obj["height"]class_id = obj["attribute"]# 将坐标转换为YOLO格式（中心坐标/宽度/高度）x_center = (x+0.5*width) / image_widthy_center = (y+0.5*height) / image_heightwidth = width / image_widthheight = height / image_heightyolo_txt += f"{class_id} {x_center:.6f} {y_center:.6f} {width:.6f} {height:.6f}\n"# 将YOLO格式文本保存到文件
output_txt_path = r'G:\bsh\dataset\flame_test_dataset\train\annotations\259.txt'
with open(output_txt_path, 'w') as output_file:output_file.write(yolo_txt)print(f"已将JSON数据转换为YOLO格式并保存到 {output_txt_path}。")