windows 安装pycocotools工具
git clone https://github.com/cocodataset/cocoapi.git
#To prevent installation error do the following after commiting cocooapi :
#using file explorer naviagate to cocoapi\PythonAPI\setup.py and change line 14 from:
#extra_compile_args=['-Wno-cpp', '-Wno-unused-function', '-std=c99'],
#to
#extra_compile_args={'gcc': ['/Qstd=c99']},
#Based on https://github.com/cocodataset/cocoapi/issues/51
cd cocoapi/PythonAPI
python setup.py build_ext install
