/**
 * @file RegionSegmentationMethod.h
 * @brief abstract interface for region segmantation
 * @author Björn Fröhlich, Alexander Freytag
 * @date 05/05/2009
 */
#ifndef REGIONSEGMENTATIONMETHOD
#define REGIONSEGMENTATIONMETHOD

#undef DEBUGRS

#include "RegionGraph.h"

// STL includes
#include <vector>

// NICE-core includes
#include "core/basics/Config.h"
#include "core/basics/Persistent.h"
#include "core/image/MultiChannelImage3DT.h"

namespace OBJREC {

class RegionSegmentationMethod : public NICE::Persistent
{

  protected:
    /////////////////////////
    /////////////////////////
    // PROTECTED VARIABLES //
    /////////////////////////
    /////////////////////////    
//     const NICE::Config *conf;

  public:
    
    ///////////////////// ///////////////////// /////////////////////
    //                   CONSTRUCTORS / DESTRUCTORS
    ///////////////////// ///////////////////// /////////////////////     

    /** simple constructor */
    RegionSegmentationMethod();

    /** simple constructor */
    RegionSegmentationMethod( const NICE::Config *c );

    /** simple destructor */
    virtual ~RegionSegmentationMethod();
    
    /** 
    * @brief Setup internal variables and objects used
    * @author Alexander Freytag
    * @param conf Config file to specify variable settings
    * @param s_confSection
    * @date 07-02-2014 ( dd-mm-yyyy )
    */       
    virtual void initFromConfig ( const NICE::Config * _conf, const std::string & _confSection = "RegionSegmentation" );

    ///////////////////// ///////////////////// /////////////////////
    //                      SEGMENTATION STUFF
    ///////////////////// ///////////////////// //////////////////    
    
    /**
     * returns the regions of a given image
     * @param img input image
     * @param mask output regions, each region has it own number
     * @return count of region
     */
    virtual int segRegions ( const NICE::Image & img, NICE::Matrix & mask ) const = 0;

    /**
     * returns the regions of a given image
     * @param img input color image
     * @param mask output regions, each region has it own number
     * @return count of region
     */
    virtual int segRegions ( const NICE::ColorImage & cimg, NICE::Matrix & mask) const;

		/**
     * returns the regions of a given 3d image
     * @param img input 3d image data
     * @param mask output regions for each image slice, each region has it own number
     * @param isGray grayscale image or not
     * @return amount of regions
     */
    virtual int segRegions (const NICE::MultiChannelImage3DT<double> & img, NICE::MultiChannelImageT<int> & mask, const int isGray) const;

		/**
     * transform a segmented color image in a grayimage, where each region has its own label
     * @param img input image
     * @param mask output mask
     * @return count of regions
     */
    int transformSegmentedImg( const NICE::ColorImage & img, NICE::Matrix & mask) const;

    /**
     * get the Graph representation of an segmentationa
     * @param cimg input color image
     * @param mask result mask of the regions
     * @param rg graph representation
     */
    void getGraphRepresentation(const NICE::ColorImage & cimg, NICE::Matrix & mask, RegionGraph & rg);
    
    
    /**
     * @brief mark contours with given segmentation
     *
     * @param cimg input image
     * @param mask result segmentation
     * @param color RGB values of marking color
     * @param marked resultimage
     * @return void
     **/
    void markContours ( const NICE::ColorImage & cimg, NICE::Matrix & mask, std::vector<int> &color, NICE::ColorImage &marked );

    /**
     * visualize the graph representation
     * @param cimg input color image
     * @param mask result mask of the regions
     */
    void visualizeGraphRepresentation(const NICE::ColorImage & cimg, NICE::Matrix & mask);

    ///////////////////// INTERFACE PERSISTENT /////////////////////
    // interface specific methods for store and restore
    ///////////////////// INTERFACE PERSISTENT /////////////////////   
    
    /** 
     * @brief Load object from external file (stream)
     * @author Alexander Freytag
     * @date 07-02-2014 ( dd-mm-yyyy )
     */     
    void restore ( std::istream & is, int format = 0 ) = 0;
    
    /** 
     * @brief Save object to external file (stream)
     * @author Alexander Freytag
     * @date 07-02-2014 ( dd-mm-yyyy )
     */     
    void store ( std::ostream & os, int format = 0 ) const = 0;
    
    /** 
     * @brief Clear object
     * @author Alexander Freytag
     * @date 07-02-2014 ( dd-mm-yyyy )
     */     
    void clear () = 0; 
};


} // namespace

#endif