使用SDFormatter格式化SD卡,使用Win32DiskImager烧录镜像
在boot路径下新建SSH空文件
插卡上电开机,接入网线,通过路由器查询IP,使用xshell的ssh连接树莓派。 用户名 pi 密码 raspberry
sudo raspi-config 打开VNC,设置分辨率,重启 开启图形化时代
设置国家,中国,汉语,上海 设置密码 填充屏幕 选择wifi 更新(建议跳过,换源后更新) 可能要重启
备份原文件
sudo cp /etc/apt/sources.list /etc/apt/sources.list.bak sudo cp /etc/apt/sources.list.d/raspi.list /etc/apt/sources.list.d/raspi.list.bak换源1
sudo nano /etc/apt/sources.list deb http://mirrors.tuna.tsinghua.edu.cn/raspbian/raspbian/ buster main contrib non-free rpi deb-src http://mirrors.tuna.tsinghua.edu.cn/raspbian/raspbian/ buster main contrib non-free rpi换源2
sudo nano /etc/apt/sources.list.d/raspi.list deb http://mirrors.tuna.tsinghua.edu.cn/raspberrypi/ buster main ui deb-src http://mirrors.tuna.tsinghua.edu.cn/raspberrypi/ buster main ui更新
sudo apt-get update sudo apt-get upgrade添加代码
set nu set pastetoggle=<F9>下载地址
https://github.com/opencv/opencv https://github.com/opencv/opencv_contrib新建文件夹
mkdir ~/opencv_build将下载好的文件复制到树莓派并解压
路径为: ~/opencv_build/opencv ~/opencv_build/opencv_contrib增加交换空间以避免因内存问题导致的编译挂起
sudo vim /etc/dphys-swapfile第16行,将 CONF_SWAPSIZE 值从默认值更改 100 为 1024 : 运行以下命令以使更改生效
sudo /etc/init.d/dphys-swapfile restart命令行输入
cmake -D CMAKE_BUILD_TYPE=RELEASE \ -D CMAKE_INSTALL_PREFIX=/usr/local \ -D INSTALL_C_EXAMPLES=OFF \ -D INSTALL_PYTHON_EXAMPLES=OFF \ -D OPENCV_GENERATE_PKGCONFIG=ON \ -D ENABLE_NEON=ON \ -D ENABLE_VFPV3=ON \ -D BUILD_TESTS=OFF \ -D OPENCV_ENABLE_NONFREE=ON \ -D OPENCV_EXTRA_MODULES_PATH=~/opencv_build/opencv_contrib/modules \ -D BUILD_EXAMPLES=OFF ..需要运行一小会 运行结果
-- Configuring done -- Generating done -- Build files have been written to: /home/pi/opencv_build/opencv/build这个过程需要2-3小时 中间可能会报错,如图所示 将boostdesc_bgm.i等文件拷贝到下列路径
~/opencv_build/opencv_contrib/modules/xfeatures2d/src再次编译
make -j4继续之前的编译
结果为
[100%] Linking CXX executable ../../bin/opencv_perf_optflow [100%] Built target opencv_perf_optflow [100%] Linking CXX executable ../../bin/opencv_perf_superres [100%] Built target opencv_perf_superres [100%] Linking CXX shared module ../../lib/cv2.so [100%] Built target opencv_python2 [100%] Linking CXX shared module ../../lib/python3/cv2.cpython-37m-arm-linux-gnueabihf.so [100%] Built target opencv_python3安装已编译的文件
sudo make install很快结束,结果为
-- Installing: /usr/local/bin/opencv_interactive-calibration -- Set runtime path of "/usr/local/bin/opencv_interactive-calibration" to "/usr/local/lib" -- Installing: /usr/local/bin/opencv_versionC++库,命令行输入
pkg-config --modversion opencv4结果为
4.3.0Python库,命令行输入
python3 -c "import cv2; print(cv2.__version__)"结果为
4.3.0-dev可以删除OpenCV包
rm -rf ~/opencv_build将交换空间更改回原始大小: 将1024改回100
sudo vim /etc/dphys-swapfile使修改生效
sudo /etc/init.d/dphys-swapfile restart