anaconda环境下安装opencv-3.4.0

 背景

最近在做视频的物体追踪，要用到视频读取函数和Tracker类，在pip和 conda安装的cv2中都没有,比如调用cv2.imshow()时有时会出现：
Thefunction is not implemented. Rebuild the library with Windows, GTK+ 2.x orCarbon support. 
If you are on Ubuntu or Debian, install libgtk2.0‑dev and pkg‑config, then re‑runcmake or configure script
这就是网上编译好的opencv包在编译的过程中设置的选项可能和你当前需求不一样，解决方法就是自己编译安装Opencv到anaconda中。


首先 安装 anaconda，这里不赘述

安装cmake-gui
sudo apt install cmake-gui

运行anaconda中的虚拟环境，运行
sudo apt-get update && sudo apt-get dist-upgrade && sudo apt-get autoremove

运行本库中的dependencies.sh，安装依赖项 
chmod +x dependencies.sh
./dependencies.sh

安装numpy
pip install numpy

解压opencv-3.4.0.zip和opencv_contrib-3.4.0.zip
cd opencv-3.4.0
mkdir build 
cd build
cmake-gui 或 cmake

进入cmake的GUI界面，选择source code的路径，和build的路径,点击configure，
默认编译文件和编译器 unix makefiles,use default native compilers
参数如下： 

cmake前5个参数需要自己手动调节

cmake  -D CMAKE_BUILD_TYPE=Release \
-D PYTHON3_LIBRARY=/home/amax/anaconda3/envs/rootclone/lib/libpython3.5m.so  \
-D OPENCV_EXTRA_MODULES_PATH=/home/amax/Downloads/opencv/opencv_contrib-3.3.1/modules  \
-D CMAKE_LIBRARY_PATH=/usr/local/cuda-*/lib64/stubs  \
-D CMAKE_INSTALL_PREFIX=/home/qian/software/anaconda3/envs/tensorflow_gpu/opencv_install_prefix \
-D INSTALL_PYTHON_EXAMPLES=ON \
-D INSTALL_C_EXAMPLES=OFF \
-D BUILD_EXAMPLES=ON \
-D CMAKE_LIBRARY_PATH=/usr/local/cuda-*/lib64/stubs  \
-D WITH_CUDA=ON  \
-D PYTHON3_EXECUTABLE=$(which python) \
-D PYTHON3_INCLUDE_DIR=$(python -c "from distutils.sysconfig import get_python_inc; print(get_python_inc())") \
-D PYTHON3PACKAGES_PATH=$(python -c "from distutils.sysconfig import get_python_lib; print(get_python_lib())") \
-D PYTHON3_NUMPY_INCLUDE_DIRS=$(python -c "import numpy; import os; print(os.path.join(numpy.__path__[0], 'core', 'include'))") .. 

编译和安装
make -j11
sudo make install
sudo ldconfig