Sometimes, It is really a mess to try installing OpenCV to your system. Nevertheless, it is really great library for any case of vision and you are obliged to use it. (No complain, just C++).
I try to list my commands here in a sequence and hope it will work for you too.
Install dependencies
apt install gcc g++ git libjpeg-dev libpng-dev libtiff5-dev libjasper-dev libavcodec-dev libavformat-dev libswscale-dev pkg-config cmake libgtk2.0-dev libeigen3-dev libtheora-dev libvorbis-dev libxvidcore-dev libx264-dev sphinx-common libtbb-dev yasm libfaac-dev libopencore-amrnb-dev libopencore-amrwb-dev libopenexr-dev libgstreamer-plugins-base1.0-dev libavcodec-dev libavutil-dev libavfilter-dev libavformat-dev libavresample-dev conda install libgcc
Download OpenCV
//First, go to your folder to hosting installation wget https://github.com/Itseez/opencv/archive/3.2.0.zip unzip 3.2.0.zip cd opencv-3.2.0 mkdir build cd build
Cmake and Setup Opencv
This cmake command targets python3.x and your target virtual environment. Therefore, before running it activate your environment. Do not forget to check flags depending on your case.
cmake -DWITH_CUDA=OFF -DBUILD_TIFF=ON -DBUILD_opencv_java=OFF -DENABLE_AVX=ON -DWITH_OPENGL=ON -DWITH_OPENCL=ON -DWITH_IPP=ON -DWITH_TBB=ON -DWITH_EIGEN=ON -DWITH_V4L=ON -DWITH_VTK=OFF -DBUILD_TESTS=OFF -DBUILD_PERF_TESTS=OFF -DCMAKE_BUILD_TYPE=RELEASE -DBUILD_opencv_python2=OFF -DCMAKE_INSTALL_PREFIX=(which python3) -DPYTHON3_INCLUDE_DIR=
(python3 -c "from distutils.sysconfig import get_python_lib; print(get_python_lib())") -D CMAKE_BUILD_TYPE=RELEASE -D CMAKE_INSTALL_PREFIX=/usr/local -D INSTALL_PYTHON_EXAMPLES=ON -D INSTALL_C_EXAMPLES=OFF -D PYTHON_EXECUTABLE=~/miniconda3/envs/dl/bin/python -D BUILD_EXAMPLES=ON .. make -j 4 sudo make install
Then check your installation on Python
import cv2 print(cv2.__version__) # should output opencv-3.2.0
