https://github.com/opencv/opencv/archive/3.3.1.zip
https://github.com/opencv/opencv_contrib/archive/3.3.1.zip
1.unzip opencv-3.3.1.zip
2.unzip opencv_contrib
3.cd opencv-3.3.1 && mkdir -p my_build_dir
4.cd my_build_dir
5.
cmake -DCMAKE-INSTALL-PREFIX=/home/houjunjie/houjunjie/opencv/opencv-3.3.1/_install -DOPENCV-EXTRA-MODULES_PATH=../opencv_contrib-3.4.1/modules ..
7.編譯出現問題，缺少文件
https://blog.csdn.net/AlexWang30/article/details/99612188
boostdesc_bgm.i
boostdesc_bgm_bi.i
boostdesc_bgm_hd.i
boostdesc_lbgm.i
boostdesc_binboost_064.i
boostdesc_binboost_128.i
boostdesc_binboost_256.i
vgg_generated_120.i
vgg_generated_64.i
vgg_generated_80.i
vgg_generated_48.i
8.文件路徑找不到換成絕對路徑