opencv install cuda9, conda env

opencv_virtualenv.txt

it clone https://github.com/opencv/opencv.git
cd opencv
git checkout 3.4.2

mkdir build && cd build

source activate tpt

cmake -D CMAKE_BUILD_TYPE=RELEASE -D CMAKE_INSTALL_PREFIX=/usr/local -D FORCE_VTK=ON -D WITH_TBB=ON -D WITH_V4L=ON -D WITH_QT=ON -D WITH_OPENGL=ON -D WITH_CUBLAS=ON -D CUDA_NVCC_FLAGS="-D_FORCE_INLINES --expt-relaxed-constexpr" -D WITH_GDAL=ON -D WITH_XINE=ON -D BUILD_EXAMPLES=ON -D OPENCV_EXTRA_MODULES_PATH=../../opencv_contrib-3.4.3/modules -DPYTHON3_EXECUTABLE=/home/software/miniconda3/envs/tpt/bin/python3 -DPYTHON_INCLUDE_DIRS=/home/software/miniconda3/envs/tpt/include/python3.6m -DPYTHON_LIBRARIES=/home/software/miniconda3/envs/tpt/lib -DPYTHON3_NUMPY_INCLUDE_DIRS=/home/software/miniconda3/envs/tpt/lib/python3.6/site-packages/numpy/core/include ..

make -j $(($(nproc) + 1))

sudo make install
sudo /bin/bash -c 'echo "/usr/local/lib" > /etc/ld.so.conf.d/opencv.conf'
sudo ldconfig
sudo apt-get update


reboot the system.




Check if the OpenCV file exists
python2
“/usr/local/lib/python2.7/dist-packages/cv2.so”
python3.5
“/usr/local/lib/python3.5/dist-packages/cv2.cpython-35m-x86_64-linux-gnu.so”
or
"/usr/local/lib/python3.5/site-packages/cv2.cpython-35m-x86_64-linux-gnu.so"
python3.6
“/usr/local/lib/python3.6/dist-packages/cv2.cpython-36m-x86_64-linux-gnu.so”

To use OpenCV 3.4.0 in virtual environment like virtualenv, conda or any other, copy related .so file or softlink in your virtual environment python directory
“lib/site-packages/”
or
"miniconda3/envs/tf/lib/python3.5/site-packages/"
Finally, check OpenCV version. Go to the terminal and type python
On the python terminal, type

import cv2
cv2.__version__