@4qm2我下载的口鼻xml文件的链接是这个：https://github.com/RobinDavid/OpenCV-tutorials?tab=readme-ov-file，上面的超链接标记错了

回复: xml转cascade
是这样的，我需要口鼻部位的haar模型，但是openmv这个仓库下没有口鼻相关的文件，所以我去opencv的仓库下下载了口鼻对应的xml文件，然后进行转换的时候出现了错误，报错如下：

(py27) PS E:\Desktop\openmv\ml\haarcascade> python .\cascade_convert.py .\haarcascade_mcs_mouth.xml
Converting old XML format..
Traceback (most recent call last):
  File ".\cascade_convert.py", line 426, in <module>
    main()
  File ".\cascade_convert.py", line 423, in main
    cascade_binary_universal(args.file, args.stages, args.name)
  File ".\cascade_convert.py", line 101, in cascade_binary_universal
    cascade_binary_old(path, n_stages, name)
  File ".\cascade_convert.py", line 281, in cascade_binary_old
    fout.write(struct.pack('h', int(float(a.childNodes[0].nodeValue)*256))) #int16_t
struct.error: short format requires SHRT_MIN <= number <= SHRT_MAX
(py27) PS E:\Desktop\openmv\ml\haarcascade> python .\cascade_convert.py .\haarcascade_mcs_nose.xml 
Converting old XML format..
Traceback (most recent call last):
  File ".\cascade_convert.py", line 426, in <module>
    main()
  File ".\cascade_convert.py", line 423, in main
    cascade_binary_universal(args.file, args.stages, args.name)
  File ".\cascade_convert.py", line 101, in cascade_binary_universal
    cascade_binary_old(path, n_stages, name)
  File ".\cascade_convert.py", line 265, in cascade_binary_old
    fout.write(struct.pack('B', s)) # uint8_t
struct.error: ubyte format requires 0 <= number <= 255

感觉可能是精度出现了问题，可以提供帮助吗