随笔- 1525 文章- 2 评论- 66 阅读- 127万

1下载源码

下载源码

https://github.com/opencv/opencv/releases/tag/3.4.9

https://github.com/opencv/opencv/releases/tag/3.4.20

下载扩展源码

https://github.com/opencv/opencv_contrib/releases/tag/3.4.9

https://github.com/opencv/opencv_contrib/releases/tag/3.4.20

2安装依赖

sudo apt-get update
   
sudo apt-get install -y build-essential cmake git libgtk2.0-dev pkg-config libavcodec-dev libavformat-dev libswscale-dev
sudo apt-get install -y libgstreamer1.0-dev libgstreamer-plugins-base1.0-dev
sudo apt-get install -y python2.7-dev python3.6-dev python-dev python-numpy python3-numpy
python3 -m pip install --upgrade pip
   
sudo apt-get install -y libtbb2 libtbb-dev libjpeg-dev libpng-dev libtiff-dev
sudo apt-get install -y libjasper1 libjasper-dev
   
sudo apt-get install -y libdc1394-22-dev
sudo apt-get install -y libv4l-dev v4l-utils qv4l2
sudo apt-get install -y curl
  <br>sudo apt install libhdf5-dev<br><br>
#后面用到
sudo apt-get install -y cmake-gui

sudo apt-get install libavcodec-dev libavformat-dev libswscale-dev libv4l-dev libxvidcore-dev libx264-dev libatlas-base-dev gfortran libgtk2.0-dev libjpeg-dev libpng-dev

sudo apt-get install libvtk6-dev

打开

1	`cmake-gui`

3-1 扩展库位置

3-2 cuda 一把不选

3-3 sifi点

3-4 java 不需要

3-5 python 默认吧

3-6 集成库不要

3-7安装路径多版本共存问题

https://blog.csdn.net/xiao_qs/article/details/126650329

一般是/usr/local/lib下，比如我的opencv4.4.5，因为安装的时候如果不指定prefix路径，那么在make install 时会将所有的 .so 文件安装在 /usr/local/lib 下，所有的头文件安装在/usr/include下。

修改

4 生成

成功后

5 编译

1	`sudo make -j8`

安装

1	`sudo make install`

多版本配置指定版本opencv参与项目编译

CMakeLists.txt

#CMAKE_PREFIX_PATH只是添加了查找路径，如果系统默认路径也有另一个版本的opencv，并不能指定
 
# 设置 OpenCV 的路径
# opencv4.5 OpenCVConfig位置
# set(OpenCV_DIR "/home/dongdong/1sorftware/1work/opencv/opencv455/install/lib/cmake/opencv4")
# opencv3.4.9 OpenCVConfig位置
set(OpenCV_DIR "/home/dongdong/1sorftware/1work/opencv/opencv349/install/share/OpenCV")
find_package(OpenCV REQUIRED)
  
# 你的其他配置
include_directories(${OpenCV_INCLUDE_DIRS})
add_executable(your_executable your_source_files)
target_link_libraries(your_executable ${OpenCV_LIBS})

系统配置文件

1	`sudo chmod` `-R` `777` `.bashrc`

# opencv版本制定
# opencv3.4.9 OpenCVConfig位置
export OpenCV_DIR=/home/dongdong/1sorftware/1work/opencv/opencv349/install/share/OpenCV
export LD_LIBRARY_PATH=/home/dongdong/1sorftware/1work/opencv/opencv349/install/lib:$LD_LIBRARY_PATH
export CPLUS_INCLUDE_PATH=/home/dongdong/1sorftware/1work/opencv/opencv349/install/include/opencv2:$CPLUS_INCLUDE_PATH
  
# opencv4.5 OpenCVConfig位置
#export OpenCV_DIR=/home/dongdong/1sorftware/1work/opencv/opencv455/install/lib/cmake/opencv4
#export LD_LIBRARY_PATH=/home/dongdong/1sorftware/1work/opencv/opencv455/install/lib:$LD_LIBRARY_PATH
#export CPLUS_INCLUDE_PATH=/home/dongdong/1sorftware/1work/opencv/opencv455/install/include/opencv4:$CPLUS_INCLUDE_PATH

使更改生效：　　

source ~/.bashrc

检查确认

echo $OpenCV_DIR

8测试

1系统环境没有添加opencv

2 装了两个版本

创建工程

CMakeLists.txt

容易受到默认系统路径其他的opencv干扰，例如ros cv_briage 直接装自动装opencv4.2到系统目录

cmake_minimum_required(VERSION 3.1)
 
#项目名字 
project(opencv_example_project)
  
#设置opencv安装路径
set(CMAKE_PREFIX_PATH "/home/r9000k/v1_software/opencv/opencv349/install")
#set(CMAKE_PREFIX_PATH "/home/r9000k/v1_software/opencv/opencv455/install") 
 
#自动查找库和文件
find_package(OpenCV REQUIRED)
include_directories(${OpenCV_INCLUDE_DIRS})
  
#打印消息
message(STATUS "OpenCV library status:")
message(STATUS "    config: ${OpenCV_DIR}")
message(STATUS "    version: ${OpenCV_VERSION}")
message(STATUS "    libraries: ${OpenCV_LIBS}")
message(STATUS "    include path: ${OpenCV_INCLUDE_DIRS}")
   
#生成可知性文件
add_executable(opencv_example main.cpp)
   
#可执行文件绑定库
target_link_libraries(opencv_example PRIVATE ${OpenCV_LIBS})

　　main.cpp

#include "opencv2/core.hpp"
#include "opencv2/imgproc.hpp"
#include "opencv2/highgui.hpp"
#include "opencv2/videoio.hpp"
#include <iostream>
   
using namespace cv;
using namespace std;
   
void drawText(Mat & image);
   
int main()
{
    cout << "Built with OpenCV " << CV_VERSION << endl;
    Mat image;
    VideoCapture capture;
    capture.open(0);
    if(capture.isOpened())
    {
        cout << "Capture is opened" << endl;
        for(;;)
        {
            capture >> image;
            if(image.empty())
                break;
            drawText(image);
            imshow("Sample", image);
            if(waitKey(10) >= 0)
                break;
        }
    }
    else
    {
        cout << "No capture" << endl;
        image = Mat::zeros(480, 640, CV_8UC1);
        drawText(image);
        imshow("Sample", image);
        waitKey(0);
    }
    return 0;
}
   
void drawText(Mat & image)
{
    putText(image, "Hello OpenCV",
            Point(20, 50),
            FONT_HERSHEY_COMPLEX, 1, // font face and scale
            Scalar(255, 255, 255), // white
            1, LINE_AA); // line thickness and type
}