guardmypi.h

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#include <opencv2/core/utility.hpp>
#include "opencv2/objdetect/objdetect.hpp"
#include <opencv2/tracking.hpp>
#include <opencv2/videoio.hpp>
#include <opencv2/highgui.hpp>
#include <opencv2/imgcodecs.hpp>
#include "opencv2/face.hpp"
#include <iostream>
#include <cstring>
#include <unistd.h>
#include <thread>
#include <ctime>
#include <cstdlib>

using namespace std;
using namespace cv;
using namespace cv::face;

class MotionDetector {
    protected:
     Mat frame_diff;    
     Mat grayscale; 
     Mat frame_thresh;  
     Mat scaled_avg;    
     vector<vector<Point> > cnts;   
     Rect rect; 
     Point pt1; 
     Point pt2; 
    
    public:
    Mat avg; 
    Mat ProcessContours(Mat camerafeed); // Motion Detector method
    int flag = 0; 
};

class ObjectDetector{
    protected:
        CascadeClassifier cascade; 
        Mat GrayFrame;          
        Point pt1;  
        Point pt2;  

    public:
        int flag = -1;  
        int loadcascade(String cascadename); // Method for loading particular Haar cascade file
        int detect(Mat ReferenceFrame, double scale_factor, int neighbours,clock_t startTime); // Method for detecting the object in frame

};

class Unlock {
    protected: 
        Mat gray,thresh, new_avg, diff,GrayFrame;   
        CascadeClassifier hand_cascade; 
        Scalar color = Scalar(255, 0, 0);
        CascadeClassifier face_cascade;  
        Ptr<LBPHFaceRecognizer> recogniser = LBPHFaceRecognizer::create(1,8,8,8,123); 
        double confidence = 0.0; 
        string name;            
        QRCodeDetector qrDecoder; 
        Mat bbox, rectifiedImage;   
        
 
    public:
        //Flags used to trigger new thread creation
        int faceflag = 0;       
        int intruderflag = 0;   
        int lockflag = 0;       
        int QRunlockflag = 0;       
        //int QRlockflag = 0;           
        int resetflag = 0;      
        int ID = -1;                    
        double secondsPassed = 0.0;     

        int loadcascade();          //Method used to load all necessary cascade files (xml and yml)
        int face(Mat ReferenceFrame, clock_t startTime);    //Method used to for facial recognition
        int QRUnlock(Mat frame, clock_t startTime);     //Method used to unlock system with QR Code
        int QRLock(Mat frame);      //Method used to lock system using QR Code
        int Deactivate(Mat frame);
};

class Camera{
    protected:
        MotionDetector motiondetector; 
        Unlock recognise;           
        ObjectDetector petdetector; 
        Mat frame;                  
        Mat testframe; 
        VideoCapture video;     
        int hour;           
        int emailflag = 1;  
        int pet_timerflag;      
        int recognise_timerflag;    
        clock_t pet_startTime;      
        clock_t recognise_startTime;    
        
        public:
        
        int opencam(int camport);       //Method used to open up the systems camera and runs an infinite loop of frame capturing    
        int gettime();      //Used to collect the time in GMT 
        };