ubuntu下安装opencv4.6.0,安装后测试opencv

安装OpenCV 4.6.0的步骤如下：

1. 安装依赖项：

sudo apt update
sudo apt install build-essential cmake git libgtk2.0-dev pkg-config libavcodec-dev libavformat-dev libswscale-dev
sudo apt install libtbb2 libtbb-dev libjpeg-dev libpng-dev libtiff-dev libdc1394-22-dev libv4l-dev libxvidcore-dev libx264-dev

2. 下载OpenCV 4.6.0源代码：

cd ~
mkdir opencv_build && cd opencv_build
git clone https://github.com/opencv/opencv.git
cd opencv
git checkout 4.6.0

3. 编译和安装OpenCV：

mkdir build && cd build
cmake -D CMAKE_BUILD_TYPE=RELEASE -D CMAKE_INSTALL_PREFIX=/usr/local ..
make -j8
sudo make install

4. 配置OpenCV环境变量：

echo 'export PKG_CONFIG_PATH=$PKG_CONFIG_PATH:/usr/local/lib/pkgconfig' >> ~/.bashrc
source ~/.bashrc

5. 测试OpenCV：

cd ~
wget https://github.com/opencv/opencv/raw/master/samples/data/lena.jpg
cd opencv_build/opencv/build/bin
./opencv_version
./cpp-example-display-image lena.jpg

如果安装和配置都成功，你应该能够看到OpenCV版本信息和lena图像。