ubuntu14.04Install opencv3.0.0 Operation Method

1.Install dependencies

Compiling and installing opencv directly usually results in errors, and dependent tools need to be installed first.

$ sudo apt-get install build-essential cmake libopencv-dev libgtk2.0-dev pkg-config python-dev python-numpy

2.Download opencv3(Any of the two versions can be chosen)

$ mkdir ~/opencv
$ cd ~/opencv

$ wget https://github.com/Itseez/opencv/archive/3.0.0-alpha.zip -O opencv-3.0.0-alpha.zip
$ unzip opencv-3.0.0-alpha.zip
$ cd opencv-3.0.0-alpha
//$ wget https://github.com/Itseez/opencv/archive/3.0.0-beta.zip
//$ unzip opencv-3.0.0-beta.zip
//$ cd opencv-3.0.0-beta

$ mkdir release
$ cd release

3.Compile and install

$ cmake -D CMAKE_BUILD_TYPE=RELEASE -D CMAKE_INSTALL_PREFIX=/usr/local -D WITH_TBB=ON -D BUILD_NEW_PYTHON_SUPPORT=ON -D WITH_V4L=ON -D WITH_QT=ON -D WITH_OPENGL=ON -D WITH_CUDA=OFF .. //Error will occur if the graphics card is not turned off (-D WITH_CUDA=OFF)
$ make -j  //Compiling with multi-core processors is faster than the default make that uses only one core
$ sudo make install

4.Configure environment variables

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

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