text: #ifndef MY_LIBRARY_
  #define MY_LIBRARY_
  
  #include "opencv2/opencv.hpp"
  #include <vector>
  
  using namespace std;
  using namespace cv;
  
  Mat output, input, transformMatrix;
  Point p1, p2, p3, p4;
  Point2f src[4];
  Point2f dst[4];
  int cnt = 0;
  int a = 1;
  
  #endif
  