rolabelimg的xml转txt

可以使用以下代码将rolabelimg生成的XML文件转换为TXT文件：

import xml.etree.ElementTree as ET
import os

# 读取XML文件并转换为TXT格式
def convert_annotation(xml_path, txt_path):
    tree = ET.parse(xml_path)
    root = tree.getroot()
    with open(txt_path, 'w') as f:
        for obj in root.iter('object'):
            cls = obj.find('name').text
            xmlbox = obj.find('bndbox')
            b = (int(xmlbox.find('xmin').text), int(xmlbox.find('ymin').text), 
                 int(xmlbox.find('xmax').text), int(xmlbox.find('ymax').text))
            f.write(cls + " " + " ".join([str(a) for a in b]) + '\n')

# 遍历文件夹中的XML文件并转换为TXT格式
def xml_to_txt(xml_folder, txt_folder):
    if not os.path.exists(txt_folder):
        os.makedirs(txt_folder)
    for xml_file in os.listdir(xml_folder):
        if xml_file.endswith('.xml'):
            xml_path = os.path.join(xml_folder, xml_file)
            txt_path = os.path.join(txt_folder, xml_file.replace('.xml', '.txt'))
            convert_annotation(xml_path, txt_path)

# 指定XML文件夹和TXT文件夹路径
xml_folder = 'path/to/xml/folder'
txt_folder = 'path/to/txt/folder'

# 转换XML文件为TXT格式
xml_to_txt(xml_folder, txt_folder)

将代码中`xml_folder`和`txt_folder`变量的值替换为相应的文件夹路径，然后运行代码即可将所有XML文件转换为TXT文件。