/**
 * @file SemSegObliqueTree.h
 * @brief Semantic Segmentation using Oblique Trees
 * @author Sven Sickert
 * @date 10/17/2014

*/

#ifndef SEMSEGOBLIQUETEEINCLUDE
#define SEMSEGOBLIQUETEEINCLUDE

// nice-core includes

// nice-vislearning includes
#include "vislearning/classifier/classifierbase/FeaturePoolClassifier.h"

// nice-semseg includes
#include "SemanticSegmentation.h"

namespace OBJREC
{

class SemSegObliqueTree : public SemanticSegmentation
{
    private:

        /** pointer to config file */
        const NICE::Config *conf;

        /** save / load trained classifier */
        bool saveLoadData;

        /** 0 - RGB, 1 - HSV, 2 - CIELab */
        int colorMode;

        /** file location of trained classifier */
        std::string fileLocation;

        /** classifier for categorization */
        FeaturePoolClassifier *fpc;

        /**
         * @brief pre-processing: resulting channels with values in the range [0,1] for RGB, HSV or GREY
         * @param ce current cached example
         * @param isColor color mode
         */
        void preprocessChannels ( CachedExample *ce, bool isColor ) const;

    public:

        /** simple constructor */
        SemSegObliqueTree ();

        /** config constructor */
        SemSegObliqueTree (
                const NICE::Config *conf,
                const ClassNames *classNames );

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

        /**
         * @brief Setup internal variables and objects used
         * @param conf Configuration file to specify variable settings
         * @param s_confSection Section in configuration file
         */
        void initFromConfig (
                const NICE::Config *_conf,
                const std::string & s_confSection = "SemSegObliqueTree" );

        /**
         * @brief training function / learn classifier
         * @param md the data set
         */
        void train ( const MultiDataset *md );

        /**
         * @brief classification function
           @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
         */
        void semanticseg ( CachedExample *ce,
                           NICE::ImageT<int> &segresult,
                           NICE::MultiChannelImageT<double> &probabilities );

        /**
         * Classify each voxel of a 3D image (image stack)
         * @author Sven Sickert
         * @param ce 3d image data
         * @param segresult segmentation results (output)
         * @param probabilities probabilities for each pixel (output)
         */
        void semanticseg ( OBJREC::CachedExample *ce,
                           NICE::MultiChannelImageT<int> & segresult,
                           NICE::MultiChannelImage3DT<double> & probabilities );

        ///////////////////// INTERFACE PERSISTENT /////////////////////
        // interface specific methods for store and restore
        ///////////////////// INTERFACE PERSISTENT /////////////////////

        /**
         * @brief Load segmentation object from external file (stream)
         */
        virtual void restore ( std::istream & is, int format = 0 );

        /**
         * @brief Save segmentation-object to external file (stream)
         */
        virtual void store( std::ostream & os, int format = 0 ) const;

        /**
         * @brief Clear segmentation-object object
         */
        virtual void clear ();

};



} // namespace

#endif