install opencv for linux mint and ubantu
to make super user password ue this command
$ sudo passwd root
choose password :********
retype password:********
check the previous opencv which is uncmpatible usally opencv 2.49 to 3.40 is compatible with many deeplearning codes
$ pkg-config --modversion opencv
get the shell script from this site
https://gist.github.com/lonehack/b3f7...
save the opencv-uninstall.sh script in the folder and runit using these commands in su(super user)
get to the folder the
chmod +x opencv-uninstall.sh
./opencv-uninstall.sh
and check for the package higher opencv 4 has been uninstalled you will be left out with opencv residual package 2.49 no need of un installing
now follow the procedures from this site
http://www.python36.com/how-to-instal...
to install opencv-3.4.0 in linuxmint -19 and ubantu -18.04 please follow the intructio which compiles it for python too and also compiles without error for yolo too so follow the steps below
to compile and enable python opencv do the procedure below and see import cv2
sudo apt-get install octave liboctave-dev
$ sudo add-apt-repository ppa:octave/stable
$ sudo apt-get update
$ sudo apt-get install octave liboctave-dev
$ sudo apt-get autoremove libopencv-dev
GCC, make, CMake, pkg-config, Git
sudo apt-get install build-essential cmake pkg-config git
zlib, JPEG, PNG, TIFF, JasPer, OpenEXR
sudo apt-get install zlib1g-dev libjpeg-dev libpng-dev libtiff-dev libjasper-dev libopenexr-dev
FFmpeg
sudo apt-get install libavcodec-dev libavformat-dev libswscale-dev
Video4Linux, DC1394, Xine, gPhoto, GStreamer
sudo apt-get install libv4l-dev libdc1394-22-dev libxine2-dev libgphoto2-dev libgstreamer0.10-dev libgstreamer-plugins-base0.10-dev
GTK+2, TBB, Eigen, BLAS/LAPACK/Atlas
sudo apt-get install libgtk2.0-dev libtbb-dev libeigen3-dev libblas-dev liblapack-dev liblapacke-dev libatlas-base-dev
$ mkdir ~/cv && cd ~/cv
$ wget -O opencv-3.4.0.zip https://github.com/opencv/opencv/arch...
$ wget -O opencv_contrib-3.4.0.zip https://github.com/opencv/opencv_cont...
$ unzip opencv-3.4.0.zip
$ unzip opencv_contrib-3.4.0.zip
cmake -G "Unix Makefiles" \
-DBUILD_DOCS=OFF \
-DBUILD_EXAMPLES=OFF \
-DBUILD_PERF_TESTS=OFF \
-DBUILD_TESTS=OFF \
-DBUILD_JAVA=OFF \
-DWITH_CUDA=OFF \
-DWITH_CUBLAS:BOOL=OFF \
-DWITH_CUFFT:BOOL=OFF \
-DWITH_NVCUVID:BOOL=OFF \
-DWITH_MATLAB=OFF \
-DBUILD_opencv_cudaarithm:BOOL=OFF \
-DBUILD_opencv_cudabgsegm:BOOL=OFF \
-DBUILD_opencv_cudacodec:BOOL=OFF \
-DBUILD_opencv_cudafeatures2d:BOOL=OFF \
-DBUILD_opencv_cudafilters:BOOL=OFF \
-DBUILD_opencv_cudaimgproc:BOOL=OFF \
-DBUILD_opencv_cudalegacy:BOOL=OFF \
-DBUILD_opencv_cudaobjdetect:BOOL=OFF \
-DBUILD_opencv_cudaoptflow:BOOL=OFF \
-DBUILD_opencv_cudastereo:BOOL=OFF \
-DBUILD_opencv_cudawarping:BOOL=OFF \
-DBUILD_opencv_cudev:BOOL=OFF \
-DBUILD_opencv_java=OFF \
-DBUILD_opencv_js=OFF \
-DBUILD_opencv_python2=ON \
-DBUILD_opencv_python3=ON \
-DBUILD_opencv_ts=OFF \
-DBUILD_opencv_world=OFF \
-DBUILD_opencv_matlab=OFF \
-DCMAKE_BUILD_TYPE=Release \
-DCMAKE_INSTALL_PREFIX=/usr/local \
-DOPENCV_ENABLE_NONFREE=ON \
-DOPENCV_EXTRA_MODULES_PATH=~/cv/opencv_contrib-3.4.0/modules ~/cv/opencv-3.4.0
$ make # -j$(nproc)
$ sudo make install
add CMAKE_INSTALL_PREFIX lib-dir to locations searched for shared libraries
$ sudo sh -c 'echo "/usr/local/lib" (put angle bracket here) /etc/ld.so.conf.d/opencv3.conf'
update cache
$ sudo ldconfig
setup pkg-config search path
$ export PKG_CONFIG_PATH=/usr/local/lib/pkgconfig:$PKG_CONFIG_PATH
$ pkg-config --modversion opencv
$ pkg-config --cflags --libs open
https://github.com/kyamagu/mexopencv/...
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