Das deutsche Python-Forum

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virtualenv -p python3  "${local_path}/"
source "${local_path}/bin/activate"

# Create new folder for OpenCV
mkdir opencv
cd opencv/

# Download OpenCV 4.3.0 source files
wget https://github.com/opencv/opencv/archive/4.1.1.zip
unzip 4.3.0.zip
rm 4.3.0zip

# Download OpenCV 4.3.0 contrib source files
wget https://github.com/opencv/opencv_contrib/archive/4.3.0.zip
unzip 4.3.0.zip
rm 4.3.0.zip

# Build OpenCV
cd opencv-4.3.0
mkdir build
cd build

cmake -D CMAKE_BUILD_TYPE=RELEASE \
    -D CMAKE_INSTALL_PREFIX=../../../env/  \
    -D OPENCV_EXTRA_MODULES_PATH=../../opencv_contrib-4.3.0/modules \
    -DBUILD_opencv_xfeatures2d=OFF \
    -D INSTALL_PYTHON_EXAMPLES=OFF \
    -D INSTALL_C_EXAMPLES=OFF \
    -D BUILD_EXAMPLES=OFF ..


make -j8
make install -j8

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import cv2