Instalação OpenCV Source

sudo apt-get update
sudo apt-get upgrade

sudo ln -sf /usr/bin/python3.6 /usr/bin/python

sudo apt-get install build-essential cmake git libgtk2.0-dev pkg-config libavcodec-dev libavformat-dev libswscale-dev

sudo apt-get install python3-dev python3-numpy libtbb2 libtbb-dev

sudo apt-get install libjpeg-dev libpng-dev libtiff5-dev libdc1394-22-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 libavutil-dev libavfilter-dev libavresample-dev


/opt$ git clone https://github.com/opencv/opencv.git
/opt$ git clone https://github.com/opencv/opencv_contrib.git


/opt$ cd opencv
 
/opt/opencv$ mkdir release
 
/opt/opencv$ cd release
 
/opt/opencv/release$ sudo cmake -D BUILD_TIFF=ON -D WITH_CUDA=OFF -D ENABLE_AVX=OFF -D WITH_OPENGL=OFF -D WITH_OPENCL=OFF -D WITH_IPP=OFF -D WITH_TBB=ON -D BUILD_TBB=ON -D WITH_EIGEN=OFF -D WITH_V4L=OFF -D WITH_VTK=OFF -D BUILD_TESTS=OFF -D BUILD_PERF_TESTS=OFF -D CMAKE_BUILD_TYPE=RELEASE -D CMAKE_INSTALL_PREFIX=/usr/local -D OPENCV_EXTRA_MODULES_PATH=/opt/opencv_contrib/modules /opt/opencv/

 
/opt/opencv/release$ make -j4
 
/opt/opencv/release$ make install

sudo apt install libopencv-dev
 
/opt/opencv/release$ ldconfig
 
/opt/opencv/release$ exit
 
/opt/opencv/release$ cd ~






Reinstala o pip

sudo easy_install pip