使用 Cmake 编译 OpenCV 以将其集成到 Conda 环境中

Question

我正在尝试按照受 here 启发的这些说明来编译 OpenCV，以便将其集成到我之前设置的 Conda 环境中。但是，当我在此 conda 环境中导入 cv2 时，python3 找不到它。

以下是我安装 Opencv 所遵循的说明：

sudo apt-get update
sudo apt-get upgrade


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

sudo apt-get install python3.6-dev python3-numpy libtbb2 libtbb-dev

sudo apt-get install libjpeg-dev libpng-dev libtiff5-dev libjasper-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

sudo -s
cd /opt
git clone https://github.com/Itseez/opencv.git
git clone https://github.com/Itseez/opencv_contrib.git


cd opencv
mkdir release
cd release


cmake -D WITH_CUDA=OFF -D BUILD_TIFF=ON -D BUILD_opencv_java=OFF -D ENABLE_AVX=ON -D WITH_OPENGL=ON -D WITH_OPENCL=ON -D WITH_IPP=ON -D WITH_TBB=ON -D WITH_EIGEN=ON -D WITH_V4L=ON -D WITH_VTK=OFF -D BUILD_TESTS=OFF -D BUILD_PERF_TESTS=OFF -D CMAKE_BUILD_TYPE=RELEASE -D BUILD_opencv_python2=OFF -D CMAKE_INSTALL_PREFIX=$(python3 -c "import sys; print(sys.prefix)") -D PYTHON3_EXECUTABLE=$(which python3) -D PYTHON3_INCLUDE_DIR=$(python3 -c "from distutils.sysconfig import get_python_inc; print(get_python_inc())") -D PYTHON3_PACKAGES_PATH=$(python3 -c "from distutils.sysconfig import get_python_lib; print(get_python_lib())") -D CMAKE_BUILD_TYPE=RELEASE -D CMAKE_INSTALL_PREFIX=/usr/local -D PYTHON_EXECUTABLE=~/anaconda3/envs/cvenv2/bin/python -D OPENCV_EXTRA_MODULES_PATH=/opt/opencv_contrib/modules -D BUILD_EXAMPLES=ON /opt/opencv/

make -j8
make install
ldconfig
exit
cd ~

conda 虚拟环境为~/anaconda3/envs/cvenv2。我认为需要编译，因为没有它我无法使用 ffmpeg。

Answer 1

问题解决，我是在虚拟环境外安装最新版的OpenCV。以下是更新后的说明：

conda activate yourenvironment

sudo apt-get update
sudo apt-get upgrade


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

sudo apt-get install python3.6-dev python3-numpy libtbb2 libtbb-dev

需要按照OpenCV in Ubuntu 17.04

单独安装libjasper-dev包

sudo add-apt-repository "deb http://security.ubuntu.com/ubuntu xenial-security main"
sudo apt update
sudo apt install libjasper1 libjasper-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


git clone https://github.com/Itseez/opencv.git
git clone https://github.com/Itseez/opencv_contrib.git


cd opencv
mkdir release
cd release

确保在 CMAKE 命令中调整您的虚拟环境的名称 PYTHON_EXECUTABLE=~/anaconda3/envs/yourvirtualenv/bin/python

cmake -D WITH_CUDA=OFF -D BUILD_TIFF=ON -D BUILD_opencv_java=OFF -D ENABLE_AVX=ON -D WITH_OPENGL=ON -D WITH_OPENCL=ON -D WITH_IPP=ON -D WITH_TBB=ON -D WITH_EIGEN=ON -D WITH_V4L=ON -D WITH_VTK=OFF -D BUILD_TESTS=OFF -D BUILD_PERF_TESTS=OFF -D CMAKE_BUILD_TYPE=RELEASE -D BUILD_opencv_python2=OFF -D CMAKE_INSTALL_PREFIX=$(python3 -c "import sys; print(sys.prefix)") -D PYTHON3_EXECUTABLE=$(which python3) -D PYTHON3_INCLUDE_DIR=$(python3 -c "from distutils.sysconfig import get_python_inc; print(get_python_inc())") -D PYTHON3_PACKAGES_PATH=$(python3 -c "from distutils.sysconfig import get_python_lib; print(get_python_lib())") -D CMAKE_BUILD_TYPE=RELEASE -D CMAKE_INSTALL_PREFIX=/usr/local -D PYTHON_EXECUTABLE=~/anaconda3/envs/cvenv2/bin/python -D OPENCV_EXTRA_MODULES_PATH=~/opencv_contrib/modules -D BUILD_EXAMPLES=ON ..

make -j8
sudo make install
sudo ldconfig

在虚拟环境中验证 opencv 安装：

pkg-config --modversion opencv

学分主要来自这两个网站，我得到了说明并找到了解决方案：site1, site2

Answer 2

我必须 link 将 cv2.so 文件添加到我的 conda 环境中！

# navigate to the conda environment
cd ~/anaconda3/envs/<env-name>/lib/python3.6/site-packages
ln -s /usr/local/lib/python3.6/site-packages/cv2/python-3.6/cv2.cpython-36m-x86_64-linux-gnu.so cv2.so

看到这个问题：

我的 cmake 命令是这个：

cmake -D WITH_CUDA=OFF \
-D BUILD_TIFF=ON \
-D BUILD_opencv_java=OFF \
-D WITH_QT=ON \
-D WITH_V4L=ON \
-D WITH_VTK=OFF \
-D BUILD_TESTS=OFF \
-D CMAKE_BUILD_TYPE=RELEASE \
-D BUILD_opencv_python2=OFF \
-D PYTHON3_EXECUTABLE=$(which python3) \
-D BUILD_NEW_PYTHON_SUPPORT=ON \
-D BUILD_opencv_python3=ON \
-D HAVE_opencv_python3=ON \
-D PYTHON_DEFAULT_EXECUTABLE=$(which python3) \
-D PYTHON_EXECUTABLE=~/anaconda3/envs/<env-name>/bin/python \
../

我为构建激活了我的 conda 环境。

使用 Cmake 编译 OpenCV 以将其集成到 Conda 环境中

Compile OpenCV with Cmake to integrate it within a Conda env

opencv

ffmpeg

python-3.x

conda