一、安装环境

安装依赖项 

sudo apt install -y g ++

sudo apt install -y cmake

sudo apt install -y make

sudo apt install -y wget

sudo apt install -y unzip

安装opencv依赖的基本库

sudo apt-get install build-essential libgtk2.0-dev libgtk-3-devlibavcodec-dev libavformat-dev libjpeg-dev libswscale-dev libtiff5-dev

3、编译安装 

sudo cmake -DCMAKE_BUILD_TYPE = RELEASE \-

DCMAKE_INSTALL_PREFIX = /usr/local \-

DOPENCV_EXTRA_MODULES_PATH = /home/pjy/opencv_build/opencv_contrib-

4.5.2/modules .. \- DWITH_CUDA = 1 \- DWITH_GTK = ON \-

DENABLE_FAST_MATH = 1 \- DCUDA_FAST_MATH = 1 \- DWITH_CUBLAS = 1 \-

DOPENCV_GENERATE_PKGCONFIG = ON \- DWITH_GSTREAMER = ON \..

 

sudo make -j8

编译完成后，安装

sudo make install  

4、环境配置

sudo gedit /etc/profile.d/pkgconfig.sh

 可能为空文件，在文件中加入

export PKG_CONFIG_PATH = /usr/local/lib/pkgconfig: $PKG_CONFIG_PATH

保存并退出，source激活

source /etc/profile  

验证是否成功

// 查看版本，有输出 4.5.2 就成功

pkg-config --modversion opencv4

// 查看库

pkg-config --libs opencv4

输出类似下面这样即为成功

sudo gedit /etc/ld.so.conf.d/opencv4.conf

文件末尾加上

/usr/local/lib 

使配置生效

sudo ldconfig  

5、demo测试  

cd ~/opencv_build/opencv-4.5.2/samples/cpp/example_cmake

cmake .

make

./opencv_example

6、最后在qt的.pro中加入头文件路径和库就可以在qt中使用了  

# 添加 opencv 头文件

INCLUDEPATH += /usr/local/include/opencv4

INCLUDEPATH += /usr/local/include/opencv4/opencv2

# 添加 opencv 库文件

LIBS += -L /home/geclab/buildroot-2016.11/output/host/usr/arm-none-

linux-gnueabi/sysroot/usr/local/lib -lopencv_gapi -

lopencv_stitching -lopencv_aruco -lopencv_bgsegm -

lopencv_bioinspired -lopencv_ccalib -lopencv_dnn_objdetect -

lopencv_dnn_superres -lopencv_dpm -lopencv_face -lopencv_fuzzy -

lopencv_hfs -lopencv_img_hash -lopencv_intensity_transform -

lopencv_line_descriptor -lopencv_mcc -lopencv_quality -

lopencv_rapid -lopencv_reg -lopencv_rgbd -lopencv_saliency -

lopencv_stereo -lopencv_structured_light -lopencv_phase_unwrapping

-lopencv_superres -lopencv_optflow -lopencv_surface_matching -

lopencv_tracking -lopencv_highgui -lopencv_datasets -lopencv_text -

lopencv_plot -lopencv_videostab -lopencv_videoio -

lopencv_wechat_qrcode -lopencv_xfeatures2d -lopencv_shape -

lopencv_ml -lopencv_ximgproc -lopencv_video -lopencv_dnn -

lopencv_xobjdetect -lopencv_objdetect -lopencv_calib3d -

lopencv_imgcodecs -lopencv_features2d -lopencv_flann -

lopencv_xphoto -lopencv_photo -lopencv_imgproc -lopencv_core

我一般都是这样写

 #添加opencv 的头文件 ARM-OpenCV 环境
INCLUDEPATH += /opencv4-arm/include
INCLUDEPATH += /opencv4-arm/include/opencv4
INCLUDEPATH += /opencv4-arm/include/opencv4/opencv2
#添加OpenCV库文件
LIBS += -L/opencv4-arm/lib -lopencv_world

#Windows OpenCV 环境
#添加头文件
INCLUDEPATH += E:\OpenCV\include
INCLUDEPATH += E:\OpenCV\include\opencv2
#添加库文件
LIBS += E:\OpenCV\x64\mingw\lib\libopencv_*.a

三、cvui的安装  

1、源码下载：

2、编译安装

mkdir -p ~/cvui-2.9.0-beta/build

cmake .

make

sudo make install

3、查看是否安装成功 

ls /usr/local/include

四、参考文章