windows下Tensorflow Object Detection API报错：object_detection/protos/*.proto: No such file or directory

1.下载protoc-3.5.1-win32.zip并解压，地址：https://github.com/google/protobuf/releases

2.将解压后的bin文件夹加入到环境变量中；

3.打开cmd，在/model/research/目录下，输入Get-ChildItem object_detection/protos/*.proto | Resolve-Path -Relative | %{ .\protoc $_ --python_out=. }