SwipeDetector.h

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#ifndef GRT_SWIPE_DETECTION_HEADER
#define GRT_SWIPE_DETECTION_HEADER

#include "../../CoreModules/Classifier.h"
#include "../../Util/ThresholdCrossingDetector.h"
#include "../../PreProcessingModules/MedianFilter.h"

GRT_BEGIN_NAMESPACE

class GRT_API SwipeDetector : public Classifier
{
public:
 enum SwipeDirections{POSITIVE_SWIPE=0,NEGATIVE_SWIPE};
 
 SwipeDetector(const unsigned int swipeIndex = 0, const unsigned int swipeThreshold = 100,
 const unsigned int hysteresisThreshold =0, const unsigned int swipeDirection = POSITIVE_SWIPE,bool useScaling=false);
 
 SwipeDetector(const SwipeDetector &rhs);
 
 virtual ~SwipeDetector(void);
 
 SwipeDetector &operator=(const SwipeDetector &rhs);
 
 virtual bool deepCopyFrom(const Classifier *classifier);
 
 bool init(const unsigned int numInputDimensions);
 
 virtual bool train_(ClassificationData &trainingData);
 
 virtual bool predict_(VectorDouble &inputVector);
 
 virtual bool clear();
 
 virtual bool reset();
 
 virtual bool save( std::fstream &file ) const;
 
 virtual bool load( std::fstream &file );
 
 bool getSwipeDetected() const;
 
 Float getSwipeValue() const;
 
 Float getSwipeThreshold() const ;
 
 Float getHysteresisThreshold() const;
 
 Float getMovementVelocity() const;
 
 Float getMovementThreshold() const;
 
 Float getContextValue() const;
 
 Float getSwipeIntegrationCoeff() const;
 
 bool setContext(const bool context);
 
 bool setSwipeIndex(const unsigned int swipeIndex);
 
 bool setSwipeDirection(const unsigned int swipeDirection);
 
 bool setSwipeThreshold(const Float swipeThreshold);
 
 bool setHysteresisThreshold(const Float hysteresisThreshold);
 
 bool setMovementThreshold(const Float movementThreshold);
 
 bool setSwipeIntegrationCoeff(const Float swipeIntegrationCoeff);

 static std::string getId();

 //Tell the compiler we are using the following functions from the MLBase class to stop hidden virtual function warnings
 using MLBase::save;
 using MLBase::load;
 using MLBase::train_;
 using MLBase::predict_;

protected:
 
 bool firstSample;
 bool swipeDetected;
 bool contextInput;
 unsigned int swipeIndex;
 unsigned int swipeDirection;
 unsigned int contextFilterSize;
 Float swipeIntegrationCoeff;
 Float movementIntegrationCoeff;
 Float swipeThreshold;
 Float hysteresisThreshold;
 Float swipeVelocity;
 Float movementVelocity;
 Float movementThreshold;
 Float contextFilteredValue;
 VectorFloat lastX;
 GRT::ThresholdCrossingDetector thresholdDetector;
 GRT::MedianFilter contextFilter;

private:
 static const std::string id;
 static RegisterClassifierModule< SwipeDetector > registerModule;
};

GRT_END_NAMESPACE

#endif //GRT_SWIPE_DETECTION_HEADER