can someone help with installing cv2.

[vivek-ram]

hi i am using conda environment i need to installcv2 is there any why i can install cv2 ??

[beraekoklu]

Duplicate of #67

[bjajoh]

got opencv and conda working correctly. I documented my procedure here and will add more in the future.
https://github.com/bjajoh/cv2-tf-scipy-for-arm-mac/blob/main/README.md

This is what I came up with:

cmake -DCMAKE_BUILD_TYPE=Release \
-DBUILD_opencv_python2=OFF \
-DBUILD_opencv_python3=ON \
-DPYTHON3_EXECUTABLE=`which python3` \
-DPYTHON3_INCLUDE_DIR=~/miniforge3/envs/python38/include/python3.8 \
-DPYTHON3_PACKAGES_PATH=~/miniforge3/envs/python38/lib/python3.8 \
-DPYTHON3_NUMPY_INCLUDE_DIR=~/miniforge3/envs/python38/lib/python3.8/site-packages/numpy/core \
-DCMAKE_INSTALL_PREFIX=/usr/local \
-DOPENCV_EXTRA_MODULES_PATH=~/opencv_contrib/modules \
-DOPENCV_ENABLE_NONFREE=ON \
../opencv

[vivek-ram]

@bjajoh 'cmake -DCMAKE_BUILD_TYPE=Release ' where implement this ?? i mean how to do this. should we create a cmakelist.txt file in build_opencv directory ? or what

[bjajoh]

@vivek-ram The last line shows the location. When following my guide, there should be a source folder with OpenCV in your home directory. Furthermore, make sure to install CMake. I installed it from source.
After preparing everything it should build the source files from "~/opencv" in the "build_opencv" folder and install everything afterwards correctly. But remember to adjust the Paths. User --> "Your Name"

git clone https://github.com/Kitware/CMake.git
./bootstrap && make && sudo make install

Here is the full guide: https://github.com/bjajoh/cv2-tf-scipy-for-arm-mac/blob/main/README.md

[vivek-ram]

@bjajoh i copied and pasted the cmake thing but i an error.

[bjajoh]

Interesting, I documented everything after I finally managed to get everything working, so there is the risk that I missed a small detail. Is there a more detailed error message? Did you clone both repositories correctly in your home folder? So "opencv_contrib" and "opencv"?

[vivek-ram]

@bjajoh yeah i did.

[bjajoh]

It is hard to say what is wrong without any specific error. Maybe check the output of that cmake command and try to see if anything there seems wrong.

[vivek-ram]

@bjajoh nothing seems wrong bro.

cmake -DCMAKE_BUILD_TYPE=Release
-DBUILD_opencv_python2=OFF
-DBUILD_opencv_python3=ON
-DPYTHON3_EXECUTABLE=which python3
-DPYTHON3_INCLUDE_DIR=/Users/vivekd/miniforge3/envs/python38/include/python3.8
-DPYTHON_INCLUDE=/Users/vivekd/miniforge3/envs/python38/include/python3.8
-DPYTHON3_PACKAGES_PATH=$(python -c "import sysconfig; print(sysconfig.get_config_var('LIBDEST'))")
-DPYTHON3_NUMPY_INCLUDE_DIR=/Users/vivekd/miniforge3/envs/python38/lib/python3.8/site-packages/numpy/core
-DCMAKE_INSTALL_PREFIX=/usr/local
-DOPENCV_EXTRA_MODULES_PATH=/Users/vivekd/opencv_contrib/modules
-DOPENCV_ENABLE_NONFREE=ON
../opencv

this is what i used. i followed your steps and i copied this in terminal it was good. next when i run make j7 getting that error 2

[sanmeow]

@bjajoh nothing seems wrong bro.

cmake -DCMAKE_BUILD_TYPE=Release
-DBUILD_opencv_python2=OFF
-DBUILD_opencv_python3=ON
-DPYTHON3_EXECUTABLE=which python3
-DPYTHON3_INCLUDE_DIR=/Users/vivekd/miniforge3/envs/python38/include/python3.8
-DPYTHON_INCLUDE=/Users/vivekd/miniforge3/envs/python38/include/python3.8
-DPYTHON3_PACKAGES_PATH=$(python -c "import sysconfig; print(sysconfig.get_config_var('LIBDEST'))")
-DPYTHON3_NUMPY_INCLUDE_DIR=/Users/vivekd/miniforge3/envs/python38/lib/python3.8/site-packages/numpy/core
-DCMAKE_INSTALL_PREFIX=/usr/local
-DOPENCV_EXTRA_MODULES_PATH=/Users/vivekd/opencv_contrib/modules
-DOPENCV_ENABLE_NONFREE=ON
../opencv

this is what i used. i followed your steps and i copied this in terminal it was good. next when i run make j7 getting that error 2

I faced the same problem. Solved by using this article's way.
https://sayak.dev/install-opencv-m1
I still faced the same error 2.
Some other parts trying, don't know which one made the compile finish.
1.Don't build inside using virtual environment.
2. Update Eigen to 3.3.9
Really happy it got solved.

[isuruf]

You can now install using conda conda install opencv

[vivek-ram]

@isuruf wow thanks bro finally solved.

[bjajoh]

Yeah, that's awesome! But it could still be an issue if you want to compile the dnn stuff of opencv 4 together with the accelerated Tensorflow. Conda only works out if you're not using the DNN Features of opencv.

[isuruf]

@bjajoh, help is welcome at https://github.com/conda-forge/opencv-feedstock