YOLOv5常见问题

yolov5将pt模型导出为onnx

1. 修改项目源码目录下的export.py文件：
   1. parse_opt函数中--data的默认值更改为数据集的配置文件
   2. parse_opt函数中--weights的默认值更改为需要转换的pt模型的路径
   3. parse_opt函数中--include的默认值更改为["onnx"]
2. 安装onnx依赖：pip install onnx==1.12.0
3. 执行python export.py --dynamic

YOLOv5模型推理过程中报错cannot instantiate ‘PosixPath‘ on your system

1. 将环境下的pathlib.py文件中如下内容更改

def __new__(cls, *args, **kwargs):
        # 修改前
        # if cls is Path:
        #     cls = WindowsPath if os.name == 'nt' else PosixPath
        # self = cls._from_parts(args, init=False)
        # if not self._flavour.is_supported:
        #     raise NotImplementedError("cannot instantiate %r on your system"
        #                               % (cls.__name__,))
        # self._init()
        # return self
        
        # 修改后
        if cls is Path:
            # cls = WindowsPath if os.name == 'nt' else PosixPath
            cls = WindowsPath
        self = cls._from_parts(args, init=False)
        # Windows doesn't support PosixPath
        if type(self) == PosixPath:
            cls = WindowsPath
            self = cls._from_parts(args, init=False)
        if not self._flavour.is_supported:
            raise NotImplementedError("cannot instantiate %r on your system"
                                      % (cls.__name__,))
        self._init()
        return self