如何免费建立公司网站,前端视频教程网站,唐山建设造价信息网的网站,建筑设计软件免费多版本OpenCV过程记录
环境
ubuntu18.04 python2.7 python3.6 python3.9 opencv 3.2
OpenCV 4.4.0安装
Ubuntu18.04 安装 Opencv4.4.0 及 Contrib (亲测有效) 暂时不清楚Contrib的作用#xff0c;所以没安装#xff0c;只安装最基础的
下载opencv4.4.0并解压
opencv下载…多版本OpenCV过程记录
环境
ubuntu18.04 python2.7 python3.6 python3.9 opencv 3.2
OpenCV 4.4.0安装
Ubuntu18.04 安装 Opencv4.4.0 及 Contrib (亲测有效) 暂时不清楚Contrib的作用所以没安装只安装最基础的
下载opencv4.4.0并解压
opencv下载地址
# 没验证过wget但是我觉得可以
cd ~/tools/opencv
wget https://github.com/opencv/opencv/archive/4.4.0.zip
unzip opencv-4.4.0.zip依赖
sudo apt update
sudo apt install cmake
sudo apt install build-essential libgtk2.0-dev libavcodec-dev libavformat-dev libjpeg-dev libswscale-dev libtiff5-dev
sudo apt install pkg-config自定义安装
多版本OpenCVOpenCV_contrib安装及使用 Ubuntu下多版本OpenCV共存和切换
# 安装地址需要注意
cd opencv-4.4.0
mkdir build cd buildcmake -DCMAKE_BUILD_TYPERELEASE \-DCMAKE_INSTALL_PREFIX/home/toniht/tools/opencv/opencv-4.4.0/build/installed \-DWITH_GTKON \-DOPENCV_GENERATE_PKGCONFIGYES \..make
make installERROR 1 /home/toniht/tools/opencv/opencv-4.4.0/modules/videoio/src/ffmpeg_codecs.hpp:81:26: error: ‘CODEC_ID_H264’ was not declared in this scope #define AV_CODEC_ID_H264 CODEC_ID_H264 满篇飘红全是错误 FIX 发现是按照别的教程曾经安装过FFmpeg又去把它卸载了。然后删除build重新构建解决。
版本切换
在bashrc文件中添加
# OpenCV 4.4.0
# export OPENCV_440_PATH/home/toniht/tools/opencv/opencv-4.4.0/build
export PKG_CONFIG_PATH$PKG_CONFIG_PATH:/home/toniht/tools/opencv/opencv-4.4.0/build/installed/lib/pkgconfig
export LD_LIBRARY_PATH$LD_LIBRARY_PATH:/home/toniht/tools/opencv/opencv-4.4.0/build/installed/lib企图添加环境变量OPENCV_440_PATH方便后续调用但是发现设置后在CMakeLists中无论如何都读取不到即便在终端中echo OPENCV_440_PATH都能正确输出路径但是CMakeLists中还是不行。很玄学。
在项目以ORB_SLAM3为例中的CMakeLists.txt文件中修改
# set(OpenCV_DIR ${OPENCV_440_PATH})
set(OpenCV_DIR /home/toniht/tools/opencv/opencv-4.4.0/build)
message(STATUS OpenCV_DIR:${OPENCV_440_PATH})find_package(OpenCV 4.4)if(NOT OpenCV_FOUND)message(FATAL_ERROR OpenCV 4.4 not found.)endif()项目正常编译。
ERROR 2 玄学bug${OPENCV_440_PATH}在终端中都正常输出了但是CMakeLists怎么输出都是空希望有人能解决我的疑问。
