[人工智能]opencv_contrib安装笔记

1.文件下载

OpenCV版本源码gitee快速下载方法

git clone -b 3.4.13 https://gitee.com/mirrors/opencv.git
git clone -b 3.4.13 https://gitee.com/mirrors/opencv_contrib.git

只需把上面-b后面的版本号改成对应版本号即可

2.安装依赖项

安装以下依赖包

sudo apt-get install build-essential  
sudo apt-get install cmake git libgtk2.0-dev pkg-config libavcodec-dev libavformat-dev libswscale-dev  
sudo apt-get install python-dev python-numpy libtbb2 libtbb-dev libjpeg-dev libpng-dev libtiff-dev libjasper-dev libdc1394-22-dev  
sudo apt-get install build-essential qt5-default ccache libv4l-dev libavresample-dev  libgphoto2-dev libopenblas-base libopenblas-dev doxygen  openjdk-8-jdk pylint libvtk6-dev
sudo apt-get install pkg-config

可能会遇到安装libjasper-dev依赖包错误：E: Unable to locate package libjasper-dev
解决办法：

sudo add-apt-repository "deb http://security.ubuntu.com/ubuntu xenial-security main"
sudo apt update
sudo apt install libjasper1 libjasper-dev

3.编译

1. 解压下载的安装包

unzip opencv-3.4.13.zip
unzip opencv_contrib-3.4.13.zip

2. 将opencv_contrib.zip提取到opencv目录下，同时新建一个build文件夹

cp -r opencv_contrib-3.4.13 opencv-3.4.13 
cd opencv-3.4.13
mkdir build                

3. 进入build，执行cmake生成makefile文件

cd build  
sudo cmake -D CMAKE_BUILD_TYPE=Release \
-D CMAKE_INSTALL_PREFIX=/usr/local  \
-D WITH_CUDA=OFF -D BUILD_DOCS=OFF -D BUILD_EXAMPLES=OFF \
-D BUILD_TESTS=OFF -D BUILD_PERF_TESTS=OFF  -D BUILD_TIFF=ON \
OPENCV_EXTRA_MODULES_PATH=/home/zhan/Lib/opencv-3.4.13/opencv_contrib-3.4.13/modules/  ..

注：OPENCV_EXTRA_MODULES_PATH是opencv_contrib-3.4.13下面文件夹modules的路径，请按照自己的实际目录修改地址，后面的两点不可省略。

4. make进行编译

sudo make -j12    	
sudo make install

5. 链接库共享
   编译安装完毕之后，为了让你的链接库被系统共享，让编译器发现，需要执行管理命令ldconfig：

sudo ldconfig -v