/**
 * @file RSGraphBased.h
 * @brief fast Segmentation Method based on Felzenszwalb2004
 * @author Björn Fröhlich, Alexander Freytag
 * @date 02/22/2010
 */
#ifndef RSGraphBasedINCLUDE
#define RSGraphBasedINCLUDE

#include "core/basics/Config.h"
#include "RegionSegmentationMethod.h"

namespace OBJREC {

class RSGraphBased: public RegionSegmentationMethod
{

  protected:
    
    /////////////////////////
    /////////////////////////
    // PROTECTED VARIABLES //
    /////////////////////////
    /////////////////////////
    
    double parameter_k;
    
    int parameter_min_size;
    
    double parameter_sigma;

  public:
    
    ///////////////////// ///////////////////// /////////////////////
    //                   CONSTRUCTORS / DESTRUCTORS
    ///////////////////// ///////////////////// /////////////////////
    
    /** default constructor */
    RSGraphBased();

    /**
     * standard constructor
     * @param conf config file
     */
    RSGraphBased( const NICE::Config * _conf );

    /** simple destructor */
    virtual ~RSGraphBased();
    
    /** 
    * @brief Setup internal variables and objects used
    * @author Alexander Freytag
    * @param conf Config file to specify variable settings
    * @param s_confSection
    * @date 08-02-2014 ( dd-mm-yyyy )
    */       
    virtual void initFromConfig ( const NICE::Config * _conf, const std::string & _confSection = "RSGraphBased" );     

    ///////////////////// ///////////////////// /////////////////////
    //                      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;

    /**
     * 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 & img, NICE::Matrix & mask) const;
    
    ///////////////////// INTERFACE PERSISTENT /////////////////////
    // interface specific methods for store and restore
    ///////////////////// INTERFACE PERSISTENT /////////////////////   
    
    /** 
     * @brief Load object from external file (stream)
     * @author Alexander Freytag
     * @date 08-02-2014 ( dd-mm-yyyy )
     */     
    void restore ( std::istream & is, int format = 0 );
    
    /** 
     * @brief Save object to external file (stream)
     * @author Alexander Freytag
     * @date 08-02-2014 ( dd-mm-yyyy )
     */     
    void store ( std::ostream & os, int format = 0 ) const;
    
    /** 
     * @brief Clear object
     * @author Alexander Freytag
     * @date 08-02-2014 ( dd-mm-yyyy )
     */     
    void clear ();     
};

} //namespace

#endif