Open CV Getting Started

Open CV References

https://076923.github.io/posts/Python-opencv-3/

Install, Ubuntu

• https://simsamo.tistory.com/25

Install, Window, C++

설치

• https://www.opencv-srf.com/2017/11/install-opencv-with-visual-studio.html
• https://nowonbun.tistory.com/745
• Go to official site / release https://opencv.org/releases/
• Download and install opencv-4.9.0-windows.exe
• D:\opencv\build > dll 가져다가 쓸 때
• D:\opencv\sources > opencv 라이브러리를 직접 수정해서 사용할 때
• 윈도우 환경변수 추가: OPENCV_DIR 새로 생성 d:\opencv\build

  visual studio project

• new project > console application
• project property > c/c++ > general > additional include directories > D:\opencv\build\include
• project property > linker > general > additional library derectories > D:\opencv\build\x64\vc16\lib
• project property > linker > input > additional dependencies > opencv_world480d.lib (d는 debug용)
• dll copy and paste from “D:\opencv\build\x64\vc16\bin\opencv_world480d.dll” to project folder

#include <iostream>
#include <string>
#include <opencv2/opencv.hpp>

using namespace cv;
using namespace std;

int main(int argc, char** argv)
{
  // Read the image file
  Mat image = imread("D:/Downloads/opencv_images/Eagle2.jpg");

  if (image.empty()) // Check for failure
  {
    cout << "Could not open or find the image" << endl;
    system("pause"); //wait for any key press
    return -1;
  }

  String windowName = "My HelloWorld Window"; //Name of the window

  namedWindow(windowName); // Create a window

  imshow(windowName, image); // Show our image inside the created window.

  waitKey(0); // Wait for any keystroke in the window

  destroyWindow(windowName); //destroy the created window

  return 0;
}