/** 
* @file SemanticFeature.h
* @brief texton feature similar to jamie shottons idea
* @author Erik Rodner
* @date 05/07/2008

*/
#ifndef SemanticFeatureINCLUDE
#define SemanticFeatureINCLUDE

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

#include "core/basics/Config.h"
#include "vislearning/cbaselib/Feature.h"


namespace OBJREC {

/** texton feature similar to jamie shottons idea */
class SemanticFeature : public Feature
{

    protected:
	/** @{ feature parameter */
	int window_size_x;
	int window_size_y;
	int shiftx;
	int shifty;
	int classno;
	/** @} */


	/** @{ parameter for feature generation */
	int numScales;
	double scaleStep;
	int maxdepth;

	int end_shiftx;
	int end_shifty;
	int step_shiftx;
	int step_shifty;
	/** @} */

	const std::set<int> *possibleClassNos;

    public:
  
	/** simple constructor */
	SemanticFeature( const NICE::Config *conf, 
			 const std::set<int> *_possibleClassNos );

	/** simple constructor */
	SemanticFeature( const NICE::Config *conf );

	/** internally used by SemanticFeature::explode */
	SemanticFeature () {};
      
	/** simple destructor */
	virtual ~SemanticFeature();
     
	double val( const Example *example ) const;
	void explode ( FeaturePool & featurePool, bool variableWindow = true ) const;
	Feature *clone() const;
	Feature *generateFirstParameter () const;

	void restore (std::istream & is, int format = 0);
	void store (std::ostream & os, int format = 0) const;
	void clear ();

};


} // namespace

#endif