#ifndef VIDEOFRAMEPROCESSOR_H
  #define VIDEOFRAMEPROCESSOR_H
  
  #include <QObject>
  #include <opencv2/core/core.hpp>
  
  class VideoFrameProcessor: public QObject
  {
    Q_OBJECT
  
   public:
    enum HistoType {
      Lum, Hs, Hsv
    };
    VideoFrameProcessor(int metrics = 0, QObject *parent = 0);
  
    public slots:
    cv::Mat genVHisto(const cv::Mat &frame, int vBins);
    cv::Mat genHsHisto(const cv::Mat &frame, int hBins, int sBins);
    cv::Mat genHsvHisto(const cv::Mat &frame, int hBins, int sBins, int vBins);
    double distanceFromPrev(const cv::Mat &hist, const cv::Mat &prevHist);
    void activL1();
    void activL2();
    void activCorrel();
    void activChiSqr();
    void activIntersect();
    void activHellinger();
  
   private:
    int m_metrics;
    qreal m_normFactor;
  };
  
  #endif