text: 
  // Event struct
  #pragma once
  
  #include <iostream>
  #include <string>
  #include <opencv2/opencv.hpp>
  using namespace std;
  using namespace cv;
  
  // Frame is not used yet.
  class Frame{
  public:
  	Frame(){}
  	Frame(const Mat &src, const string& name) { 
  		mImage = src.clone();
  		mImageName = name;
  	}
  	string mImageName;
  	int mId;		// frame ID
  	int mTimestamp;		// frame time stamp
  	Mat mImage;
  };
  