代码收藏家 ubuntu下opencv4.6.0环境安装编译
目录
一.下载安装包
1.下载opencv
opencv-4.6.0.zip+opencv_contrib-4.x.zip
2.新建opencv文件夹将下载好的：opencv-4.6.0.zip解压到opencv文件夹里面;
3.将解压opencv_contrib-4.x.zip的文件放入opencv文件
二.配制安装环境
1.打开终端，进入root权限：
su root2.输入环境安装包命令：（安装build-essential可以安装所有的依赖）
sudo apt-get install build-essential
3.安装camke:
sudo apt-get install cmake git libgtk2.0-dev pkg-config libavcodec-dev libavformat-dev libswscale-dev
4.安装python库：
sudo apt-get install python-dev python-numpy libtbb2 libtbb-dev libjpeg-dev libpng-dev libtiff-dev libjasper-dev libdc1394-22-dev
三.开始安装opencv
1.在刚才的opencv文件夹下新建build文件夹：再进入build文件夹
cd opencv
mkdir build
cd build
2.输入cmake命令：
sudo cmake -D CMAKE_BUILD_TYPE=Release -D CMAKE_INSTALL_PREFIX=/usr/local ..
3.开始编译：
sudo make -j4
4.开始安装：
sudo make install
四.添加路径
1.打开文件ld.so：
sudo gedit /etc/ld.so.conf
2.在后面加入：（直接加在后面，不用换行）
/usr/loacal/lib
3.保存后关闭文件，输入命令：
sudo ldconfig
五、配制环境
1.打打.bashrc文件：
sudo gedit /etc/bash.bashrc
2.在文件最后换行后加入代码后保存关闭：
PKG_CONFIG_PATH=$PKG_CONFIG_PATH:/usr/local/lib/pkgconfig
export PKG_CONFIG_PATH
3.输入命令：
source /etc/bash.bashrc
4.输入命令：查看opencv安装情况
pkg-config opencv --modversion
六、.出现以下异常：
Package opencv was not found in the pkg-config search path.
Perhaps you should add the directory containing `opencv.pc'
to the PKG_CONFIG_PATH environment variable
No package 'opencv' found
Package opencv was not found in the pkg-config search path.
Perhaps you should add the directory containing `opencv.pc'
to the PKG_CONFIG_PATH environment variable
No package 'opencv' found
1.首先创建opencv.pc文件，要注意它的路径信息：
cd /usr/local/lib
sudo mkdir pkgconfig
cd pkgconfig
sudo touch opencv.pc
2.在opencv.pc中添加以下信息，注意这些信息需要与自己安装opencv时的库路径对应：
prefix=/usr/local
exec_prefix=${prefix}
includedir=${prefix}/include
libdir=${exec_prefix}/lib
Name: opencv
Description: The opencv library
Version:4.0.1
Cflags: -I${includedir}/opencv4
Libs: -L${libdir} -lopencv_shape -lopencv_stitching -lopencv_objdetect -lopencv_superres -lopencv_videostab -lopencv_calib3d -lopencv_features2d -lopencv_highgui -lopencv_videoio -lopencv_imgcodecs -lopencv_video -lopencv_photo -lopencv_ml -lopencv_imgproc -lopencv_flann -lopencv_core
~
3.保存退出，然后将文件导入到环境变量:
export PKG_CONFIG_PATH=/usr/local/lib/pkgconfig
七.测试Opencv:
进入opencv/samples/cpp/example_cmake目录下，终端打开，依次输入：
cmake .
make
./opencv_example
