iOptimizerMLEM.hh

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/*
This file is part of CASToR.

    CASToR is free software: you can redistribute it and/or modify it under the
    terms of the GNU General Public License as published by the Free Software
    Foundation, either version 3 of the License, or (at your option) any later
    version.

    CASToR is distributed in the hope that it will be useful, but WITHOUT ANY
    WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
    FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
    details.

    You should have received a copy of the GNU General Public License along with
    CASToR (in file GNU_GPL.TXT). If not, see <http://www.gnu.org/licenses/>.

Copyright 2017-2018 all CASToR contributors listed below:

    --> current contributors: Thibaut MERLIN, Simon STUTE, Didier BENOIT, Claude COMTAT, Marina FILIPOVIC, Mael MILLARDET
    --> past contributors: Valentin VIELZEUF

This is CASToR version 2.0.
*/

#ifndef IOPTIMIZERMLEM_HH
#define IOPTIMIZERMLEM_HH 1

#include "gVariables.hh"
#include "sAddonManager.hh"
#include "vOptimizer.hh"

class iOptimizerMLEM : public vOptimizer
{
  // -------------------------------------------------------------------
  // Constructor & Destructor
  public:
    iOptimizerMLEM();
    ~iOptimizerMLEM();


  // -------------------------------------------------------------------
  // Public member functions
  public:
    // Function for automatic insertion (put the class name as the parameter and do not add semi-column at the end of the line)
    FUNCTION_OPTIMIZER(iOptimizerMLEM)
    int ReadConfigurationFile(const string& a_configurationFile);
    int ReadOptionsList(const string& a_optionsList);

  // -------------------------------------------------------------------
  // Private member functions (pure virtual in vOptimizer)
  private:
    void ShowHelpSpecific();
    int CheckSpecificParameters();
    int InitializeSpecific();
    int SensitivitySpecificOperations( FLTNB a_data, FLTNB a_forwardModel, FLTNB* ap_weight,
                                       FLTNB a_multiplicativeCorrections, FLTNB a_additiveCorrections, FLTNB a_blankValue,
                                       FLTNB a_quantificationFactor, oProjectionLine* ap_Line );
    int DataSpaceSpecificOperations( FLTNB a_data, FLTNB a_forwardModel, FLTNB* ap_backwardValues,
                                     FLTNB a_multiplicativeCorrections, FLTNB a_additiveCorrections, FLTNB a_blankValue,
                                     FLTNB a_quantificationFactor, oProjectionLine* ap_Line );
    int ImageSpaceSpecificOperations( FLTNB a_currentImageValue, FLTNB* ap_newImageValue,
                                      FLTNB a_sensitivity, FLTNB* ap_correctionValues, INTNB a_voxel );


  // -------------------------------------------------------------------
  // Data members
  private:
    FLTNB m_dataSpaceDenominatorThreshold; 
    FLTNB m_minimumImageUpdateFactor;      
    FLTNB m_maximumImageUpdateFactor;      
};


// Class for automatic insertion (set here the visible optimizer's name as the first parameter,
// put the class name as the second parameter and do NOT add semi-colon at the end of the line)
CLASS_OPTIMIZER(MLEM,iOptimizerMLEM)

#endif