一般情况下在research文件夹下面运行：
protoc object_detection/protos/*.proto --python_out=.
——————————结果出错了。所以，看下面————————
win：
shift+右键 在Windows powershell中使用以下命令：
Get-ChildItem object_detection/protos/*.proto |Resolve-Path -Relative | %{
protoc $_ --python_out=.}
如果没有 Windows powershell，自己百度，打开 Windows powershell 窗口，cmd下 上面命令不可用
win+linux 都可试一下
protoc .\object_detection\protos\string_int_label_map.proto --python_out=.
终极
该错误无非是不能批量编译，只能一个一个的编译，所以
新建批处理文件 xxx.bat，放在research下，双击运行
protoc object_detection\protos\anchor_generator.proto --python_out=.
protoc object_detection\protos\argmax_matcher.proto --python_out=.
protoc object_detection\protos\bipartite_matcher.proto --python_out=.
protoc object_detection\protos\box_coder.proto --python_out=.
protoc object_detection\protos\box_predictor.proto --python_out=.
protoc object_detection\protos\eval.proto --python_out=.
protoc object_detection\protos\faster_rcnn.proto --python_out=.
protoc object_detection\protos\faster_rcnn_box_coder.proto --python_out=.
protoc object_detection\protos\graph_rewriter.proto --python_out=.
protoc object_detection\protos\grid_anchor_generator.proto --python_out=.
protoc object_detection\protos\hyperparams.proto --python_out=.
protoc object_detection\protos\image_resizer.proto --python_out=.
protoc object_detection\protos\input_reader.proto --python_out=.
protoc object_detection\protos\keypoint_box_coder.proto --python_out=.
protoc object_detection\protos\losses.proto --python_out=.
protoc object_detection\protos\matcher.proto --python_out=.
protoc object_detection\protos\mean_stddev_box_coder.proto --python_out=.
protoc object_detection\protos\model.proto --python_out=.
protoc object_detection\protos\multiscale_anchor_generator.proto --python_out=.
protoc object_detection\protos\optimizer.proto --python_out=.
protoc object_detection\protos\pipeline.proto --python_out=.
protoc object_detection\protos\post_processing.proto --python_out=.
protoc object_detection\protos\preprocessor.proto --python_out=.
protoc object_detection\protos\region_similarity_calculator.proto --python_out=.
protoc object_detection\protos\square_box_coder.proto --python_out=.
protoc object_detection\protos\ssd.proto --python_out=.
protoc object_detection\protos\ssd_anchor_generator.proto --python_out=.
protoc object_detection\protos\string_int_label_map.proto --python_out=.
protoc object_detection\protos\train.proto --python_out=.