ubuntu 安装opencv3.0

参照国外大神博客：Install OpenCV 3.0 and Python 2.7+ on Ubuntu

这里把主要代码直接贴上，具体每一步作用移步大神博客。

Step 1:sudo apt-get updatesudo apt-get upgradeStep 2:sudo apt-get install build-essential cmake git pkg-configStep 3:sudo apt-get install libjpeg8-dev libtiff4-dev libjasper-dev libpng12-devStep 4:sudo apt-get install libgtk2.0-devStep 5:sudo apt-get install libavcodec-dev libavformat-dev libswscale-dev libv4l-devStep 6:sudo apt-get install libatlas-base-dev gfortranStep 7:wget https://bootstrap.pypa.io/get-pip.pysudo python get-pip.pyStep 9:sudo apt-get install python2.7-devpip install numpyStep 10:cd ~git clone https://github.com/Itseez/opencv.gitcd opencvgit checkout 3.0.0cd ~git clone https://github.com/Itseez/opencv_contrib.gitcd opencv_contribgit checkout 3.0.0cd ~/opencvmkdir buildcd buildcmake -D CMAKE_BUILD_TYPE=RELEASE \    -D CMAKE_INSTALL_PREFIX=/usr/local \    -D INSTALL_C_EXAMPLES=OFF \    -D INSTALL_PYTHON_EXAMPLES=ON \    -D OPENCV_EXTRA_MODULES_PATH=~/opencv_contrib/modules \    -D BUILD_EXAMPLES=ON ..make -j8sudo make installsudo ldconfigpython>>> import cv2>>> cv2.__version__'3.0.0'

报错解决：

错误1：

error: ‘NppiGraphcutState’ has not been declared … modules/cudalegacy/CMakeFiles/opencv_cudalegacy.dir/build.make:290: recipe for target ‘modules/cudalegacy/CMakeFiles/opencv_cudalegacy.dir/src/graphcuts.cpp.o’ failed make[2]: *** [modules/cudalegacy/CMakeFiles/opencv_cudalegacy.dir/src/graphcuts.cpp.o] Er

原因： GraphCut 在cuda7.5中弃用，而且在cuda8.0中移除了。

解决办法：修改 ～/opencv/modules/cudalegacy/src/graphcuts.cpp文件

把第45行修改成：

#if !defined (HAVE_CUDA) || defined (CUDA_DISABLER) || (CUDART_VERSION >= 8000)

即在 #if !defined (HAVE_CUDA) || defined (CUDA_DISABLER) 加上 || (CUDART_VERSION >= 8000)

错误2：

编译和安装一切正常后，进入python命令行，import cv报错 no module named cv2

解决方案：搜索cv2.so文件，将其copy至python目录下dist-packages文件夹下即可解决

（若搜索不到cv2.so文件，那就只好重新编译安装了。==、）

错误3：

ICV: Downloading ippicv_linux_20141027.tgz...

下载出错

解决方案：

1.找个快的翻墙软件，实测某灯不太行。

2.https://sourceforge.net/projects/opencvlibrary/files/3rdparty/ippicv/该网站可下载。