save_to_img 函数报错 PermissionError: [WinError 32]

[YCLM-in-github]

在测试公式识别模块的代码时出现PermissionError: [WinError 32] 另一个程序正在使用此文件，进程无法访问。
测试代码如下：

from paddleocr import FormulaRecognition
model = FormulaRecognition(model_name="PP-FormulaNet_plus-M",
                           model_dir="./PP-FormulaNet_plus-M_infer")
output = model.predict(input="general_formula_rec_001.png", batch_size=1)
for res in output:
    res.print()
    res.save_to_img(save_path="./Foutput/")
    res.save_to_json(save_path="./Foutput/res.json")

出现的报错如下：

Traceback (most recent call last):
  File "E:\programdata\python3128\Lib\shutil.py", line 633, in _rmtree_unsafe
    os.unlink(fullname)
PermissionError: [WinError 32] 另一个程序正在使用此文件，进程无法访问。: 'C:\\WINDOWS\\TEMP\\tmpthvk6l9d\\temp.pdf'
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
  File "E:\data\python\GZD201A\F.py", line 7, in <module>
    res.save_to_img(save_path="./Foutput/")
  File "E:\data\python\GZD201A\.venv\Lib\site-packages\paddlex\inference\common\result\mixin.py", line 319, in save_to_img
    img = self._to_img()
          ^^^^^^^^^^^^^^
  File "E:\data\python\GZD201A\.venv\Lib\site-packages\paddlex\inference\models\formula_recognition\result.py", line 68, in _to_img
    env_valid()
  File "E:\data\python\GZD201A\.venv\Lib\site-packages\paddlex\inference\models\formula_recognition\result.py", line 323, in env_valid
    with tempfile.TemporaryDirectory() as td:
         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "E:\programdata\python3128\Lib\tempfile.py", line 946, in __exit__
    self.cleanup()
  File "E:\programdata\python3128\Lib\tempfile.py", line 950, in cleanup
    self._rmtree(self.name, ignore_errors=self._ignore_cleanup_errors)
  File "E:\programdata\python3128\Lib\tempfile.py", line 930, in _rmtree
    _shutil.rmtree(name, onexc=onexc)
  File "E:\programdata\python3128\Lib\shutil.py", line 781, in rmtree
    return _rmtree_unsafe(path, onexc)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "E:\programdata\python3128\Lib\shutil.py", line 635, in _rmtree_unsafe
    onexc(os.unlink, fullname, err)
  File "E:\programdata\python3128\Lib\tempfile.py", line 905, in onexc
    _os.unlink(path)
PermissionError: [WinError 32] 另一个程序正在使用此文件，进程无法访问。: 'C:\\WINDOWS\\TEMP\\tmpthvk6l9d\\temp.pdf'

看上去似乎是在删除临时目录时出现的问题，但是不知道到底是谁在占用
使用环境

win10 21H2
python 3.12.8
paddlex 3.1.3
paddleocr 3.1.0

[liuhongen1234567]

您好，公式识别的可视化目前只支持linux系统，window系统由于涉及到latex编辑环境的安装，还在适配中。window系统的话建议把latex代码从json中读取出来，使用一些latex在线渲染引擎查看。

[YCLM-in-github]

好的，谢谢回复！