/** 
* @file SemanticSegmentation.h
* @brief abstract interface for semantic segmentation algorithms
* @author Erik Rodner
* @date 03/19/2009

*/
#ifndef SEMANTICSEGMENTATIONINCLUDE
#define SEMANTICSEGMENTATIONINCLUDE

#include <objrec/nice.h>
 
#include "vislearning/cbaselib/MultiDataset.h"
#include "vislearning/cbaselib/LocalizationResult.h"
#include "vislearning/cbaselib/CachedExample.h"
#include "vislearning/cbaselib/Example.h"
 

namespace OBJREC {

/** abstract interface for semantic segmentation algorithms */
class SemanticSegmentation
{

    protected:
	/** accessible class names and information about
	    number of classes etc. */
	const ClassNames *classNames;

	/** enum type for imagetype */
	enum {
	    IMAGETYPE_RGB = 0,
	    IMAGETYPE_GRAY
	};

	/** whether to load images with color information */
	int imagetype;

    public:
  
	/** simple constructor 
	    @param conf global settings
	    @param classNames this ClassNames object while be stored as a attribute
	*/
	SemanticSegmentation( const Config *conf, 
			      const ClassNames *classNames );
      
	/** simple destructor */
	virtual ~SemanticSegmentation();

	/** this function has to be overloaded by all subclasses 
	    @param ce image data
	    @param segresult result of the semantic segmentation with a label for each
		   pixel
	    @param probabilities multi-channel image with one channel for each class and
			         corresponding probabilities for each pixel
	*/
	virtual void semanticseg ( OBJREC::CachedExample *ce, 
			   NICE::Image & segresult,
			   NICE::MultiChannelImageT<double> & probabilities ) = 0;
			   
	/**
	 * convert different datatypes
	 */
	void convertVVectorToExamples(NICE::VVector &feats,OBJREC::Examples &examples, std::vector<int> &label);
	void convertExamplesToVVector(NICE::VVector &feats,OBJREC::Examples &examples, std::vector<int> &label);
	void convertExamplesToLSet(OBJREC::Examples &examples, OBJREC::LabeledSetVector &lvec);
	void convertLSetToExamples(OBJREC::Examples &examples, OBJREC::LabeledSetVector &lvec);
	void convertLSetToSparseExamples(OBJREC::Examples &examples, OBJREC::LabeledSetVector &lvec);

	
	/** load img from file call localize(CachedExample *ce) etc. */
	void semanticseg ( const std::string & filename,
			   NICE::Image & segresult,
	  NICE::MultiChannelImageT<double> & probabilities);

};


} // namespace

#endif