ITK  4.1.0
Insight Segmentation and Registration Toolkit
itkBinaryProjectionImageFilter.h
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00001 /*=========================================================================
00002  *
00003  *  Copyright Insight Software Consortium
00004  *
00005  *  Licensed under the Apache License, Version 2.0 (the "License");
00006  *  you may not use this file except in compliance with the License.
00007  *  You may obtain a copy of the License at
00008  *
00009  *         http://www.apache.org/licenses/LICENSE-2.0.txt
00010  *
00011  *  Unless required by applicable law or agreed to in writing, software
00012  *  distributed under the License is distributed on an "AS IS" BASIS,
00013  *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
00014  *  See the License for the specific language governing permissions and
00015  *  limitations under the License.
00016  *
00017  *=========================================================================*/
00018 #ifndef __itkBinaryProjectionImageFilter_h
00019 #define __itkBinaryProjectionImageFilter_h
00020 
00021 #include "itkProjectionImageFilter.h"
00022 #include "itkConceptChecking.h"
00023 
00024 namespace itk
00025 {
00049 namespace Functor
00050 {
00051 template< class TInputPixel, class TOutputPixel >
00052 class BinaryAccumulator
00053 {
00054 public:
00055   BinaryAccumulator( SizeValueType ) {}
00056   ~BinaryAccumulator(){}
00057 
00058   inline void Initialize()
00059   {
00060     m_IsForeground = false;
00061   }
00062 
00063   inline void operator()(const TInputPixel & input)
00064   {
00065     if ( input == m_ForegroundValue )
00066       {
00067       m_IsForeground = true;
00068       }
00069   }
00070 
00071   inline TOutputPixel GetValue()
00072   {
00073     if ( m_IsForeground )
00074       {
00075       return (TOutputPixel)m_ForegroundValue;
00076       }
00077     else
00078       {
00079       return m_BackgroundValue;
00080       }
00081   }
00082 
00083   bool m_IsForeground;
00084 
00085   TInputPixel m_ForegroundValue;
00086 
00087   TOutputPixel m_BackgroundValue;
00088 };
00089 } // end namespace Function
00090 
00091 template< class TInputImage, class TOutputImage >
00092 class ITK_EXPORT BinaryProjectionImageFilter:
00093   public ProjectionImageFilter< TInputImage, TOutputImage,
00094                                 Functor::BinaryAccumulator<
00095                                   typename TInputImage::PixelType,
00096                                   typename TOutputImage::PixelType > >
00097 {
00098 public:
00099   typedef BinaryProjectionImageFilter Self;
00100   typedef ProjectionImageFilter< TInputImage, TOutputImage,
00101                                  Functor::BinaryAccumulator<
00102                                    typename TInputImage::PixelType,
00103                                    typename TOutputImage::PixelType > > Superclass;
00104 
00105   typedef SmartPointer< Self >       Pointer;
00106   typedef SmartPointer< const Self > ConstPointer;
00107 
00109   itkTypeMacro(BinaryProjectionImageFilter, ProjectionImageFilter);
00110 
00112   itkNewMacro(Self);
00113 
00115   typedef TInputImage  InputImageType;
00116   typedef TOutputImage OutputImageType;
00117 
00119   typedef typename InputImageType::PixelType  InputPixelType;
00120   typedef typename OutputImageType::PixelType OutputPixelType;
00121 
00122   typedef typename Superclass::AccumulatorType AccumulatorType;
00123 
00127   itkSetMacro(ForegroundValue, InputPixelType);
00128 
00131   itkGetConstMacro(ForegroundValue, InputPixelType);
00132 
00137   itkSetMacro(BackgroundValue, OutputPixelType);
00138 
00143   itkGetConstMacro(BackgroundValue, OutputPixelType);
00144 
00145 #ifdef ITK_USE_CONCEPT_CHECKING
00146 
00147   itkConceptMacro( InputPixelTypeGreaterThanComparable,
00148                    ( Concept::EqualityComparable< InputPixelType > ) );
00149   itkConceptMacro( InputHasNumericTraitsCheck,
00150                    ( Concept::HasNumericTraits< InputPixelType > ) );
00151 
00153 #endif
00154 protected:
00155   BinaryProjectionImageFilter()
00156   {
00157     m_ForegroundValue = NumericTraits< InputPixelType >::max();
00158     m_BackgroundValue = NumericTraits< OutputPixelType >::NonpositiveMin();
00159   }
00161 
00162   virtual ~BinaryProjectionImageFilter() {}
00163 
00164   void PrintSelf(std::ostream & os, Indent indent) const
00165   {
00166     Superclass::PrintSelf(os, indent);
00167 
00168     typedef typename NumericTraits< InputPixelType >::PrintType
00169     InputPixelPrintType;
00170 
00171     os << indent << "ForegroundValue: "
00172        << static_cast< InputPixelPrintType >( m_ForegroundValue )
00173        << std::endl;
00174 
00175     typedef typename NumericTraits< OutputPixelType >::PrintType
00176     OutputPixelPrintType;
00177 
00178     os << indent << "BackgroundValue: "
00179        << static_cast< OutputPixelPrintType >( m_BackgroundValue )
00180        << std::endl;
00181   }
00182 
00183   virtual AccumulatorType NewAccumulator( SizeValueType size ) const
00184   {
00185     AccumulatorType accumulator(size);
00186 
00187     accumulator.m_ForegroundValue = m_ForegroundValue;
00188     accumulator.m_BackgroundValue = m_BackgroundValue;
00189     return accumulator;
00190   }
00191 
00193   InputPixelType m_ForegroundValue;
00194 
00196   OutputPixelType m_BackgroundValue;
00197 private:
00198   BinaryProjectionImageFilter(const Self &); //purposely not implemented
00199   void operator=(const Self &);              //purposely not implemented
00200 };                                           // end BinaryProjectionImageFilter
00201 } //end namespace itk
00203 
00204 #endif
00205