/** 
* @file FCCodebookHistBin.h
* @brief create features with codebook
* @author Erik Rodner
* @date 02/05/2008

*/
#ifndef FCCODEBOOKHISTBININCLUDE
#define FCCODEBOOKHISTBININCLUDE

#ifdef NOVISUAL
#include <vislearning/nice_nonvis.h>
#else
#include <vislearning/nice.h>
#endif

#include "core/basics/Config.h"
#include "vislearning/features/fbase/FeatureFactory.h"
#include "vislearning/features/localfeatures/LocalFeatureRepresentation.h"

#include "Codebook.h"


namespace OBJREC {

/** create features with codebook */
class FCCodebookHistBin : public FeatureFactory
{

    protected:
	int n_method;

	const LocalFeatureRepresentation *lfrep;
	const Codebook *codebook;

	void calcHistogram ( const NICE::VVector & features,
			     NICE::Vector & histogram );

	void calcHistogram ( const NICE::VVector & features,
			     NICE::Vector & histogram,
			     NICE::Matrix & assignments);

	void normalizeHistogram ( NICE::Vector & histogram );

    public:
  	enum {
	    NORMALIZE_RAW = 0,
	    NORMALIZE_BINZERO,
	    NORMALIZE_SUM,
	    NORMALIZE_THRESH
	};


	/** simple constructor */
	FCCodebookHistBin( const NICE::Config *conf,
	    const LocalFeatureRepresentation *lfrep,
	    const std::string & normalizationMethod,
	    const Codebook *codebook );
      
	/** simple destructor */
	virtual ~FCCodebookHistBin();
	
	int convert ( const NICE::Image & img, NICE::Vector & vec );
	
	int calcAssignments ( const NICE::VVector & features, NICE::Vector & vec, NICE::Matrix & assignments );

	void setNormalizationMethod ( int normalizationMethod );
	int getNormalizationMethod () const;
     
};


} // namespace

#endif