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itkAttributeMorphologyBaseImageFilter.h

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00001 /*=========================================================================
00002 
00003   Program:   Insight Segmentation & Registration Toolkit
00004   Module:    $RCSfile: itkAttributeMorphologyBaseImageFilter.h,v $
00005   Language:  C++
00006   Date:      $Date: 2009-04-23 03:43:41 $
00007   Version:   $Revision: 1.5 $
00008 
00009   Copyright ( c ) Insight Software Consortium. All rights reserved.
00010   See ITKCopyright.txt or http://www.itk.org/HTML/Copyright.htm for details.
00011 
00012      This software is distributed WITHOUT ANY WARRANTY; without even
00013      the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
00014      PURPOSE.  See the above copyright notices for more information.
00015 
00016 =========================================================================*/
00017 
00018 #ifndef __itkAttributeMorphologyBaseImageFilter_h
00019 #define __itkAttributeMorphologyBaseImageFilter_h
00020 
00021 #include "itkImageToImageFilter.h"
00022 #include "itkImage.h"
00023 #include <vector>
00024 
00025 #define PAMI
00026 
00027 namespace itk
00028 {
00029 
00056 template <class TInputImage, class TOutputImage, class TAttribute, class TFunction>
00057 class ITK_EXPORT AttributeMorphologyBaseImageFilter : 
00058     public ImageToImageFilter< TInputImage, TOutputImage > 
00059 {
00060 public:
00064   typedef AttributeMorphologyBaseImageFilter              Self;
00065   typedef ImageToImageFilter< TInputImage, TOutputImage > Superclass;
00066 
00070   typedef typename Superclass::InputImagePointer InputImagePointer;
00071 
00076   typedef typename TOutputImage::PixelType         OutputPixelType;
00077   typedef typename TOutputImage::InternalPixelType OutputInternalPixelType;
00078   typedef typename TInputImage::PixelType          InputPixelType;
00079   typedef typename TInputImage::InternalPixelType  InputInternalPixelType;
00080   typedef typename TInputImage::IndexType          IndexType;
00081   typedef typename TInputImage::OffsetType         OffsetType;
00082   typedef typename TInputImage::SizeType           SizeType;
00083 
00084   itkStaticConstMacro(ImageDimension, unsigned int,
00085                       TOutputImage::ImageDimension);
00086   
00090   typedef TInputImage  InputImageType;
00091   typedef TOutputImage OutputImageType;
00092 //   typedef   typename TInputImage::IndexType       IndexType;
00093 //   typedef   typename TInputImage::SizeType        SizeType;
00094   typedef   typename TOutputImage::RegionType     RegionType;
00095   typedef   std::list<IndexType>                  ListType;
00096   typedef TAttribute                              AttributeType;
00097 
00101   typedef SmartPointer<Self>        Pointer;
00102   typedef SmartPointer<const Self>  ConstPointer;
00103 
00107   itkTypeMacro(AttributeMorphologyBaseImageFilter, ImageToImageFilter);
00108 
00112   itkNewMacro(Self);
00113 
00120   itkSetMacro(FullyConnected, bool);
00121   itkGetConstReferenceMacro(FullyConnected, bool);
00122   itkBooleanMacro(FullyConnected);
00124 
00130   itkSetMacro(Lambda, AttributeType);
00131   itkGetConstMacro(Lambda, AttributeType);
00133 
00134 protected:
00135   AttributeMorphologyBaseImageFilter() 
00136     {
00137     m_FullyConnected = false;
00138     m_AttributeValuePerPixel = 1;
00139     m_Lambda = 0;
00140     }
00141   virtual ~AttributeMorphologyBaseImageFilter() {}
00142   AttributeMorphologyBaseImageFilter(const Self&) {}
00143   void PrintSelf(std::ostream& os, Indent indent) const;
00144 
00148   void GenerateData();
00149 
00153   void GenerateInputRequestedRegion();
00154 
00159   void EnlargeOutputRequestedRegion(DataObject *itkNotUsed(output));
00160 
00161   AttributeType m_AttributeValuePerPixel;
00162 
00163 private:
00164 
00165   bool          m_FullyConnected;
00166   AttributeType m_Lambda;
00167 
00168   // some constants used several times in the code
00169   itkStaticConstMacro(INACTIVE, long, -1);
00170   itkStaticConstMacro(ACTIVE, long, -2);
00171   itkStaticConstMacro(ROOT, long, -3);
00172 
00173   // Just used for area/volume openings at the moment
00174   AttributeType * m_AuxData;
00175 
00176   typedef std::vector<OffsetType> OffsetVecType;
00177   // offset in the linear array.
00178   typedef std::vector<long> OffsetDirectVecType;
00179 
00180   void SetupOffsetVec(OffsetDirectVecType &PosOffsets, OffsetVecType &Offsets);
00181 
00182   class GreyAndPos
00183     {
00184     public:
00185       InputPixelType Val;
00186       long Pos;
00187     };
00188 
00189   GreyAndPos *     m_SortPixels;
00190   long *           m_Parent;
00191 #ifndef PAMI
00192   bool *           m_Processed;
00193 #endif
00194   // This is a bit ugly, but I can't see an easy way around
00195   InputPixelType * m_Raw;
00196 
00197   class ComparePixStruct
00198     {
00199     public:
00200     TFunction m_TFunction;
00201     bool operator()(GreyAndPos const &l, GreyAndPos const &r) const
00202       {
00203       if (m_TFunction(l.Val, r.Val))
00204         {
00205         return true;
00206         }
00207       if (l.Val == r.Val)
00208         {
00209         return (l.Pos < r.Pos);
00210         }
00211       return false;
00212       }
00213     };
00214 
00215 #ifdef PAMI
00216   // version from PAMI. Note - using the AuxData array rather than the
00217   // parent array to store area
00218   void MakeSet(long x)
00219     {
00220     m_Parent[x] = ACTIVE;
00221     m_AuxData[x] = m_AttributeValuePerPixel;
00222     }
00223 
00224   long FindRoot(long x)
00225     {
00226     if (m_Parent[x] >= 0)
00227       {
00228       m_Parent[x] = FindRoot(m_Parent[x]);
00229       return(m_Parent[x]);
00230       }
00231     else
00232       {
00233       return(x);
00234       }
00235     }
00236 
00237   bool Criterion(long x, long y)
00238     {
00239     return((m_Raw[x] == m_Raw[y]) || (m_AuxData[x] < m_Lambda));
00240     }
00241   
00242   void Union(long n, long p)
00243     {
00244     long r = FindRoot(n);
00245     if (r != p)
00246       {
00247       if (Criterion(r, p))
00248         {
00249         m_AuxData[p] += m_AuxData[r];
00250         m_Parent[r] = p;
00251         }
00252       else 
00253         {
00254         m_AuxData[p] = m_Lambda;
00255         }
00256       }
00257     }
00258 
00259 #else
00260   // version from ISMM paper
00261   void MakeSet(long x)
00262     {
00263     m_Parent[x] = ACTIVE;
00264     m_AuxData[x] = m_AttributeValuePerPixel;
00265     }
00266 
00267   void Link(long x, long y)
00268     {
00269     if ((m_Parent[y] == ACTIVE) && (m_Parent[x] == ACTIVE))
00270       {
00271       // should be a call to MergeAuxData
00272       m_AuxData[y] = m_AuxData[x] + m_AuxData[y];
00273       m_AuxData[x] = -m_AttributeValuePerPixel;
00274       }
00275     else if (m_Parent[x] == ACTIVE)
00276       {
00277       m_AuxData[x] = -m_AttributeValuePerPixel;
00278       }
00279     else
00280       {
00281       m_AuxData[y] = -m_AttributeValuePerPixel;
00282       m_Parent[y] = INACTIVE;
00283       }
00284     m_Parent[x] = y;
00285     }
00286 
00287   long FindRoot(long x)
00288     {
00289     if (m_Parent[x] >= 0)
00290       {
00291       m_Parent[x] = FindRoot(m_Parent[x]);
00292       return(m_Parent[x]);
00293       }
00294     else
00295       {
00296       return(x);
00297       }
00298     }
00299 
00300   bool Equiv(long x, long y)
00301     {
00302     return((m_Raw[x] == m_Raw[y]) || (m_Parent[x] == ACTIVE));
00303     }
00304   
00305   void Union(long n, long p)
00306     {
00307     long r = FindRoot(n);
00308     if (r != p)
00309       {
00310       if (Equiv(r, p))
00311         {
00312         Link(r, p);
00313         }
00314       else if (m_Parent[p] == ACTIVE)
00315         {
00316         m_Parent[p] = INACTIVE;
00317         m_AuxData[p] = -m_AttributeValuePerPixel;
00318         }
00319       }
00320     }
00321 #endif
00322 };
00323   
00324 } // end namespace itk
00325 
00326 #ifndef ITK_MANUAL_INSTANTIATION
00327 #include "itkAttributeMorphologyBaseImageFilter.txx"
00328 #endif
00329 
00330 #endif
00331 

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