ubuntu16.04安装OpenCV3.0.0

OpenCV安装了好多遍，最重要的是要网好，中间几次出错，都是网络状态不好，下载的东西下载不完全。

Step 1. 安装依赖项

sudo apt-get -y install libopencv-dev build-essential cmake git libgtk2.0-dev pkg-config python3-dev python3-numpy libdc1394-22 libdc1394-22-dev libjpeg-dev libpng12-dev libtiff5-dev libjasper-dev libavcodec-dev libavformat-dev libswscale-dev libxine2-dev libgstreamer0.10-dev libgstreamer-plugins-base0.10-dev libv4l-dev libtbb-dev libqt4-dev libfaac-dev libmp3lame-dev libopencore-amrnb-dev libopencore-amrwb-dev libtheora-dev libvorbis-dev libxvidcore-dev x264 v4l-utils unzip

Step2. 下载OpenCV3.0.0

下载OpenCv3.0.0，网页下载比终端下载快一些。

网址：https://github.com/Itseez/opencv/archive/3.0.0-alpha.zip

新建一个文件夹保存，打开终端执行：

mkdir opencv
cd opencv

将下载好的文件复制到根目录下刚创建的opencv文件夹中，解压文件。

Step 3.安装OpenCV

进入opencv→opencv-3.0.0-alpha,打开终端执行

mkdir build
cd build
cmake -D CMAKE_BUILD_TYPE=RELEASE -D CMAKE_INSTALL_PREFIX=/usr/local -D WITH_TBB=ON -D WITH_V4L=ON -D WITH_QT=ON -D WITH_OPENGL=ON ..
make -j $(nproc)
sudo make install

Step 4. 完成安装

sudo /bin/bash -c 'echo "/usr/local/lib" > /etc/ld.so.conf.d/opencv.conf'
sudo ldconfig

Step 5. 测试

cd opencv/opencv-3.0.0-alpha/samples/
sudo cmake .
sudo make -j $(nproc)
cd cpp/
./cpp-example-facedetect lena.jpg // \(../data/lena.jpg\) OpenCV 3.0 beta

./cpp-example-houghlines pic1.png // \(../data/pic1.jpg\) OpenCV 3.0 beta

出现图片即为安装成功！