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
  
sudo apt install libhdf5-dev


#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

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

sudo make -j8

安装

sudo make install

将文件权限放开，否则编译即使有路径也找不到

sudo chmod -R 777 /home/r9000k/v1_software/opencv/opencv349/install/

权限解除

多版本配置指定版本opencv参与项目编译

CMakeLists.txt

#设置opencv安装路径
set(OpenCV_DIR "/home/r9000k/v1_software/opencv/opencv349/install")

# 方式2：通过CMAKE_PREFIX_PATH
#set(CMAKE_PREFIX_PATH ${CMAKE_PREFIX_PATH} "/home/r9000k/v1_software/opencv/opencv349/install")

find_package(OpenCV REQUIRED
                 COMPONENTS
                 core imgcodecs videoio features2d calib3d highgui)


                 # 打印调试信息
message(STATUS "OpenCV found: ${OpenCV_FOUND}")
message(STATUS "OpenCV version: ${OpenCV_VERSION}")
message(STATUS "OpenCV include dirs: ${OpenCV_INCLUDE_DIRS}")
message(STATUS "OpenCV libs: ${OpenCV_LIBS}")

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

sudo chmod -R 777 .bashrc

用这个模式不容易解析错误

# OpenCV 环境配置
#export OpenCV_DIR=/home/r9000k/v1_software/opencv/opencv349/install//share/OpenCV
export OpenCV_DIR=/home/r9000k/v1_software/opencv/opencv349/install/
export LD_LIBRARY_PATH=/home/r9000k/v1_software/opencv/opencv349/install/lib:$LD_LIBRARY_PATH
# C++ 包含路径 - 改到 include 目录
export CPLUS_INCLUDE_PATH=/home/r9000k/v1_software/opencv/opencv349/install/include/opencv2:$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})

openvslam其他参考

#设置opencv安装路径
set(CMAKE_PREFIX_PATH "/home/r9000k/v1_software/opencv/opencv349/install")
set(OpenCV_DIR "/home/r9000k/v1_software/opencv/opencv349/install/lib/cmake/opencv4")

find_package(OpenCV REQUIRED
                 COMPONENTS
                 core imgcodecs videoio features2d calib3d highgui)


                 # 打印调试信息
message(STATUS "OpenCV found: ${OpenCV_FOUND}")
message(STATUS "OpenCV version: ${OpenCV_VERSION}")
message(STATUS "OpenCV include dirs: ${OpenCV_INCLUDE_DIRS}")
message(STATUS "OpenCV libs: ${OpenCV_LIBS}")

include_directories("/home/r9000k/v1_software/opencv/opencv349/install/include")
include_directories(${OpenCV_INCLUDE_DIRS})
include_directories(SYSTEM ${OpenCV_INCLUDE_DIRS})

　　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
}

传建build并编译

cmake ..

生成

make

执行

 ./opencv_example

posted on 2023-09-22 20:50 MKT-porter 阅读(217) 评论(0) 收藏举报

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