因操作失误，误卸开发机NVIDIA显卡驱动，先更新操作日志如下：
sudo apt-get purge nvidia*
sudo add-apt-repository ppa:graphics-drivers sudo apt-get update
sudo apt-cache search nvidia
sudo apt-get install nvidia-415 nvidia-settings nvidia-prime
lsmod | grep nvidia
lsmod | grep nouveau
显卡重装后，cuda也需重装
sudo dpkg -i cuda-repo-ubuntu1604_9.0.176-1_amd64.deb sudo apt-key adv --fetch-keys http://developer.download.nvidia.com/compute/cuda/repos/ubuntu1604/x86_64/7fa2af80.pub sudo apt-get update sudo apt-get install cuda-9-0 cuda-libraries-9-0
wget https://github.com/opencv/opencv/archive/3.4.5.zip unzip opencv-3.4.5.zip cd opencv-3.4.5 mkdir build && cd build cmake .. make -j8 sudo make install
对应环境变量配置：
sudo vi /etc/profile
# 新增 opencv动态库所在路径
export LD_LIBRARY_PATH=/usr/local/share/OpenCV/java:$LD_LIBRARY_PATH
git clone https://github.com/BVLC/caffe.git cp Makefile.config.example Makefile.config gedit Makefile.config # 此处选择是否应用cudnn，opencv，python等 opencv需指定版本 将 #OPENCV_VERSION := 3 修改为： OPENCV_VERSION := 3 其余参考需求 # 编译 make all -j8 make distribute # 运行测试 sudo make runtest -j8
修改Makefile 依次指定opencv、caffe、java - jni 等路径
修改 config.xml 完善相关配置
Ubuntu 16.04 安装opencv3.4.5/cuda/caffe并使用jni笔记
原文：https://www.cnblogs.com/nyatom/p/10414514.html