/*  FAST4 - FMRIB's Automated Segmentation Tool v4

    John Vickers, Mark Jenkinson and Steve Smith
    FMRIB Image Analysis Group

    Copyright (C) 2005-2007 University of Oxford  */

/*  Part of FSL - FMRIB's Software Library
    http://www.fmrib.ox.ac.uk/fsl
    fsl@fmrib.ox.ac.uk
    
    Developed at FMRIB (Oxford Centre for Functional Magnetic Resonance
    Imaging of the Brain), Department of Clinical Neurology, Oxford
    University, Oxford, UK
    
    
    LICENCE
    
    FMRIB Software Library, Release 5.0 (c) 2012, The University of
    Oxford (the "Software")
    
    The Software remains the property of the University of Oxford ("the
    University").
    
    The Software is distributed "AS IS" under this Licence solely for
    non-commercial use in the hope that it will be useful, but in order
    that the University as a charitable foundation protects its assets for
    the benefit of its educational and research purposes, the University
    makes clear that no condition is made or to be implied, nor is any
    warranty given or to be implied, as to the accuracy of the Software,
    or that it will be suitable for any particular purpose or for use
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    You are not permitted under this Licence to use this Software
    commercially. Use for which any financial return is received shall be
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    of the source code or the Software into a product for sale or license
    by or on behalf of Licensee to third parties or (2) use of the
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#include "newimage/newimageall.h"
#include "miscmaths/miscmaths.h"
#include "utils/options.h"


using namespace MISCMATHS;
using namespace NEWIMAGE;
using namespace Utilities;
using namespace std;

class ZMRIMULTISegmentation
{
 public:

  ZMRIMULTISegmentation();
  ~ZMRIMULTISegmentation()
    {
    }
  void TanakaCreate(const NEWIMAGE::volume<float>* images, int nclasses, bool b2d, int nbiter,float nblowpass, float fbeta, int bapused, bool pveboolean, int nchan, bool bbias, int initfixity, bool verb,int biterationspve, int winit, float mixelpB, float Hyp,string mansegfle,int finalT2file);
  int TanakaMain(NEWIMAGE::volume<float>& pcsf, NEWIMAGE::volume<float>& pgm, NEWIMAGE::volume<float>& pwm);

 
  volume4D<float> m_post;
  volume4D<float> members;
  volume4D<float> m_pve;
  volume<float>* m_Finalbias;
  volume<int> m_Segment;
  volume<int> m_pveSegment;
  volume<int> hardPV;
  Matrix coord_minus_mean;
  float maximum, minimum;


private:
  NEWIMAGE::volume<float> Convolve(NEWIMAGE::volume<float>& resfieldimage);
  NEWIMAGE::volume4D<float> InitclassAlt(int);
  NEWIMAGE::volume4D<float>  Initclass(int noclasses);
  Matrix covariancematrix(int classid, volume4D<float> probability);
  float M_2PI(int numberofchan);
  float logpveGaussian(int x, int y, int z, Matrix mu, Matrix sig, float detsig);
  float PVEnergy(int x, int y, int z, Matrix mu, Matrix sigma, float sigdet);
  float logGaussian(int classnumber, int x, int y, int z);
  float pvmeans(int clas);
  float pvvar(int clas);
  void Volumesquant(const NEWIMAGE::volume4D<float>& probs);
  void Initialise();
  void takeexpo();
  float  MRFWeightsTotal();
  double MRFWeightsInner(const int x, const int y, const int z,const int c);
  double MRFWeightsAM(const int l, const int m, const int n);
  void InitWeights();
  void UpdateWeights();
  void InitSimple(const NEWIMAGE::volume<float>& pcsf, const NEWIMAGE::volume<float>& pgm, const NEWIMAGE::volume<float>& pwm);
  void InitAprioriKMeans();
  void BiasRemoval();
  void MeansVariances(int numberofclasses);
  void Dimensions();
  void WeightedKMeans();
  void mresmatrix();
  void UpdateMembers(NEWIMAGE::volume4D<float>& probability);
  void PVClassificationStep();
  void ICMPV();
  void PVMoreSophisticated();
  void PVestimation();
  void PVMeansVar(const NEWIMAGE::volume4D<float>& m_posttemp);
  void Classification(int x, int y, int z);
  void Classification();
  void InitKernel();
  void pveClassification(int x, int y, int z);
  void pveClassification();
  int qsort();
  void TanakaHyper();
  void TanakaPriorHyper();
  void TanakaIterations();
  Matrix*  m_inv_co_variance;
  Matrix* m_co_variance;
  Matrix m_mean;
  volume4D<float> m_prob;
  volume4D<float>PVprob;
  volume4D<float> talpriors;
  volume<float>* m_Mri;
  volume<float>* m_Mricopy;
  volume<float>* p_bias;
  volume<float>* m_meaninvcov;
  volume<float>* m_resmean;
  volume<float> pve_eng;
  volume<float> m_maskc;
  volume<int> m_mask;
  ColumnVector kernelx, kernely, kernelz;
  float amx, amy, amz, amxy, amzx, amzy;
  double* volumequant;
  float* rhs;
  float* globtot;
  float* m_prior;
  float* npve;
  float* weight;
  int imagetype;
  float m_nbLowpass;
  float MSQR2PI;
  float m_nxdim, m_nydim, m_nzdim;
  float beta, pveB, Hyper;
  float pveBmixeltype, mixeltypeMRF, mixelmrf;
  int noclasses;
  int numberofchannels;
  int m_nSlicesize, m_nWidth, m_nHeight, m_nDepth, m_nbIter, initfixed, inititerations, iterationspve;
  bool weightschanged, bapusedflag;
  bool verboseusage;
  bool biasfieldremoval;
  string mansegfile;

class kmeansexception: public exception
{
 public:
  virtual const char* what() const throw ()
  {
    return "Exception: Not enough classes detected to init KMeans";
  }
} kmeansexc;

};