Ubuntu安装OpenCV3.4.6

要在Ubuntu上安装OpenCV3.4.6，首先需要下载OpenCV3.4.6的压缩包。可以通过官网或者GitHub下载。在终端中执行以下命令进行下载：

git clone -b 3.4.6 https://github.com/opencv/opencv

接下来，将下载好的OpenCV_contrib-3.4.6的压缩包解压到home目录下创建的opencv文件夹中。在终端中执行以下命令：

cd opencv
unzip opencv_contrib-3.4.6.zip

然后，在build文件夹中执行以下命令来进行编译和安装：

cd build
cmake -D CMAKE_BUILD_TYPE=Release -D CMAKE_INSTALL_PREFIX=/usr/local/opencv346 -D PYTHON_DEFAULT_EXECUTABLE=$(which python3) -D OPENCV_EXTRA_MODULES_PATH=../opencv_contrib-3.4.6/modules -D WITH_TBB=ON -D WITH_EIGEN=ON ..
make
sudo make install

完成后，OpenCV3.4.6就会被安装在/usr/local/opencv346目录下。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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