/** 
 * @file LFPatches.h
 * @brief simple patch based approach
 * @author Erik Rodner
 * @date 02/06/2008

 */
#ifndef LFPATCHESINCLUDE
#define LFPATCHESINCLUDE

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

#include "core/basics/Config.h"
#include "vislearning/image/ImagePyramid.h"
#include "LocalFeatureRepresentation.h"
#include "vislearning/features/localfeatures/InterestDetector.h"

namespace OBJREC
{

/** simple patch based approach */
class LFPatches: public LocalFeatureRepresentation
{

protected:
	enum
	{
		NORMALIZE_N01 = 0, NORMALIZE_NONE, NORMALIZE_STDDEV, NORMALIZE_MEAN
	};

	int xsize;
	int ysize;
	int normalization;
	std::auto_ptr<InterestDetector> id;
	int maxLevels;
	double scaleSpacing;
	int detectormode;
	int numPatches;


	void calcDescriptors(const ImagePyramid & imp, NICE::VVector & positions,
			NICE::VVector & features) const;

public:

	/** simple constructor */
	LFPatches(const NICE::Config *conf, int numPatches);

	/** simple destructor */
	virtual ~LFPatches();

	int getDescSize() const;

	int extractFeatures(const NICE::Image & img, NICE::VVector & features,
			NICE::VVector & positions) const;
	void correctPositions(const ImagePyramid & imp, NICE::VVector & positions,
			NICE::VVector & positions_corrected) const;

	void visualize(NICE::Image & img, const NICE::Vector & feature) const;

	void visualizeFeatures(NICE::Image & mark, const NICE::VVector & positions,
			size_t color) const;
//DIRTY for bofCreationSingleImage
	int calcDescriptor(const ImagePyramid & imp, const NICE::Vector & position,
				NICE::Vector & desc) const;

};

} // namespace

#endif