NICE_VisLearning/features/fpfeatures/HaarFeature.h

/** 
* @file HaarFeature.h
* @brief simple haar like feature
* @author Erik Rodner
* @date 04/21/2008

*/
#ifndef HAARFEATUREINCLUDE
#define HAARFEATUREINCLUDE

#include "core/vector/VectorT.h"
#include "core/vector/MatrixT.h"

#include "core/basics/Config.h"

#include "vislearning/cbaselib/Feature.h"


namespace OBJREC {

/** simple haar like feature */
class HaarFeature : public Feature
{

    protected:
	enum {
	    HAARTYPE_HORIZONTAL = 0,
	    HAARTYPE_VERTICAL,
	    HAARTYPE_DIAGONAL,
	    HAARTYPE_3BLOCKS,
	    HAARTYPE_NUMTYPES
	};

	int type;
	int pos1;
	int pos2;
	int step_x;
	int step_y;
	int window_size_x;
	int window_size_y;

    public:
  
	/** simple constructor */
	HaarFeature( const NICE::Config *conf );
      
	/** without memory wasting config */
	HaarFeature ( int window_size_x,	
		      int window_size_y,
		      int step_x,
		      int step_y );

	/** simple destructor */
	virtual ~HaarFeature();
     
	virtual double val( const Example *example ) const;

	void explode ( FeaturePool & featurePool, bool variableWindow ) const;
	Feature *clone() const;
	
	void restore (std::istream & is, int format = 0);
	void store (std::ostream & os, int format = 0) const;
	void clear ();

};


} // namespace

#endif