一、编译安装
1.官网下载sources版本(For Linux)：http://opencv.org/releases.html
2.解压：
1 unzip opencv-3.4.1.zip
3.进入：
1 cd opencv-3.4.1.zip
4.安装cmake工具:
1 sudo apt-get install cmake
5.安装依赖库：
1 sudo apt-get install build-essential libgtk2.0-dev libavcodec-dev libavformat-dev libjpeg.dev libtiff4.dev libswscale-dev libjasper-dev
6.创建编译目录(release)并进入：
1 mkdir release && cd release
7.cmake配置编译：
1 cmake -D CMAKE_BUILD_TYPE=RELEASE -D CMAKE_INSTALL_PREFIX=/usr/local -D WITH_TBB=ON -D BUILD_NEW_PYTHON_SUPPORT=ON -D WITH_V4L=ON -D WITH_QT=ON -D WITH_OPENGL=ON ..
8.make编译：
1 make -j$(nproc) 2 // nproc是读取CPU的核心数量
9.安装：
1 sudo make install
10.环境配置添加库路径(方式一)：
1 sudo /bin/bash -c ‘echo "/usr/local/lib" > /etc/ld.so.conf.d/opencv.conf‘
10.环境配置添加库路径(方式二)：
1 sudo gedit /etc/ld.so.conf.d/opencv.conf 2 //打开后可能是空文件，在文件内容最后添加 3 /usr/local/lib
11.更新系统库：
1 sudo ldconfig
12.配置bash，执行如下命令
1 sudo gedit /etc/bash.bashrc 2 //在末尾添加 3 PKG_CONFIG_PATH=$PKG_CONFIG_PATH:/usr/local/lib/pkgconfig 4 export PKG_CONFIG_PATH
保存退出，然后执行如下命令使得配置生效
1 sudo source /etc/bash.bashrc 2 //激活配置然后更新database 3 sudo updatedb
参考：https://blog.csdn.net/keith_bb/article/details/52685231
二、测试
在home下新建文件夹进入并新建名称为opencv_test.cpp
1 #include <iostream>
2 #include <opencv2/opencv.hpp>
3
4 using namespace cv;
5 using namespace std;
6
7 int main(int argc, char** argv)
8 {
9
10 if ( argc != 2 )
11 {
12 cout << "Need to load a picture..." << endl;
13 return -1;
14 }
15 Mat image;
16 image = imread( argv[1], 1 );
17 if ( image.empty() )
18 {
19 cout<<"No image data!"<< endl;
20 return -1;
21 }
22 namedWindow("Display Image", WINDOW_AUTOSIZE );
23 imshow("Display Image", image);
24 waitKey(0);
25 return 0;
26 }
建立一个CMakeLists.txt文件：
1 cmake_minimum_required(VERSION 2.8)
2
3 project( DisplayImage )
4
5 find_package( OpenCV REQUIRED )
6
7 add_executable( opencv_test opencv_test.cpp )
8
9 target_link_libraries( opencv_test ${OpenCV_LIBS} )
在桌面上放一张测试的图片，例如test.jpg，分别执行
1 cmake . 2 3 make 4 5 ./opencv_test test.jpg
即可显示图片
三、问题记录
1.Qt5Core编译错误
1 CMake Warning at cmake/OpenCVFindLibsGUI.cmake:18 (find_package): 2 By not providing "FindQt5Core.cmake" in CMAKE_MODULE_PATH this project has 3 asked CMake to find a package configuration file provided by "Qt5Core", but 4 CMake did not find one. 5 6 Could not find a package configuration file provided by "Qt5Core" with any 7 of the following names: 8 9 Qt5CoreConfig.cmake 10 qt5core-config.cmake 11 12 Add the installation prefix of "Qt5Core" to CMAKE_PREFIX_PATH or set 13 "Qt5Core_DIR" to a directory containing one of the above files. If 14 "Qt5Core" provides a separate development package or SDK, be sure it has 15 been installed. 16 Call Stack (most recent call first): 17 CMakeLists.txt:466 (include) 18 19 CMake Warning at cmake/OpenCVFindLibsGUI.cmake:19 (find_package): 20 By not providing "FindQt5Gui.cmake" in CMAKE_MODULE_PATH this project has 21 asked CMake to find a package configuration file provided by "Qt5Gui", but 22 CMake did not find one. 23 24 Could not find a package configuration file provided by "Qt5Gui" with any 25 of the following names: 26 27 Qt5GuiConfig.cmake 28 qt5gui-config.cmake 29 30 Add the installation prefix of "Qt5Gui" to CMAKE_PREFIX_PATH or set 31 "Qt5Gui_DIR" to a directory containing one of the above files. If "Qt5Gui" 32 provides a separate development package or SDK, be sure it has been 33 installed. 34 Call Stack (most recent call first): 35 CMakeLists.txt:466 (include) 36 37 38 CMake Warning at cmake/OpenCVFindLibsGUI.cmake:20 (find_package): 39 By not providing "FindQt5Widgets.cmake" in CMAKE_MODULE_PATH this project 40 has asked CMake to find a package configuration file provided by 41 "Qt5Widgets", but CMake did not find one. 42 43 Could not find a package configuration file provided by "Qt5Widgets" with 44 any of the following names: 45 46 Qt5WidgetsConfig.cmake 47 qt5widgets-config.cmake 48 49 Add the installation prefix of "Qt5Widgets" to CMAKE_PREFIX_PATH or set 50 "Qt5Widgets_DIR" to a directory containing one of the above files. If 51 "Qt5Widgets" provides a separate development package or SDK, be sure it has 52 been installed. 53 54 Call Stack (most recent call first): 55 56 CMakeLists.txt:466 (include) 57 58 CMake Warning at cmake/OpenCVFindLibsGUI.cmake:21 (find_package): 59 60 By not providing "FindQt5Test.cmake" in CMAKE_MODULE_PATH this project has asked CMake to find a package configuration file provided by "Qt5Test", but 61 62 CMake did not find one. 63 64 Could not find a package configuration file provided by "Qt5Test" with any 65 66 of the following names: 67 68 Qt5TestConfig.cmake 69 qt5test-config.cmake 70 71 Add the installation prefix of "Qt5Test" to CMAKE_PREFIX_PATH or set 72 "Qt5Test_DIR" to a directory containing one of the above files. If 73 "Qt5Test" provides a separate development package or SDK, be sure it has 74 been installed. 75 Call Stack (most recent call first): 76 CMakeLists.txt:466 (include) 77 78 79 CMake Warning at cmake/OpenCVFindLibsGUI.cmake:22 (find_package): 80 By not providing "FindQt5Concurrent.cmake" in CMAKE_MODULE_PATH this 81 project has asked CMake to find a package configuration file provided by 82 "Qt5Concurrent", but CMake did not find one. 83 84 Could not find a package configuration file provided by "Qt5Concurrent" 85 with any of the following names: 86 87 Qt5ConcurrentConfig.cmake 88 qt5concurrent-config.cmake 89 90 Add the installation prefix of "Qt5Concurrent" to CMAKE_PREFIX_PATH or set 91 "Qt5Concurrent_DIR" to a directory containing one of the above files. If 92 "Qt5Concurrent" provides a separate development package or SDK, be sure it 93 has been installed. 94 Call Stack (most recent call first): 95 CMakeLists.txt:466 (include) 96 97 qmake: could not exec ‘/usr/lib/x86_64-linux-gnu/qt4/bin/qmake‘: No such file or directory 98 CMake Error at /usr/share/cmake-2.8/Modules/FindQt4.cmake:1386 (message): 99 Found unsuitable Qt version "" from NOTFOUND, this code requires Qt 4.x 100 Call Stack (most recent call first): 101 cmake/OpenCVFindLibsGUI.cmake:34 (find_package) 102 CMakeLists.txt:466 (include) 103 104 -- Configuring incomplete, errors occurred! 105 See also "/home/*******/OpenCV/opencv-2.4.9/build/CMakeFiles/CMakeOutput.log". 106 See also "/home/*******/OpenCV/opencv-2.4.9/build/CMakeFiles/CMakeError.log".
Qt5Core-CMake did not find one
解决方式：
1 qt5-default：sudo apt-get install qt5-default
参考地址：https://stackoverflow.com/questions/24378473/ubuntu-opencv-install-and-setup-qt5
原文地址：https://www.cnblogs.com/Shuqing-cxw/p/9195303.html
时间： 2024-10-10 05:02:20