ITK  4.1.0
Insight Segmentation and Registration Toolkit
itkBoundedReciprocalImageFilter.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 /*=========================================================================
00019  *
00020  *  Portions of this file are subject to the VTK Toolkit Version 3 copyright.
00021  *
00022  *  Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
00023  *
00024  *  For complete copyright, license and disclaimer of warranty information
00025  *  please refer to the NOTICE file at the top of the ITK source tree.
00026  *
00027  *=========================================================================*/
00028 #ifndef __itkBoundedReciprocalImageFilter_h
00029 #define __itkBoundedReciprocalImageFilter_h
00030 
00031 #include "itkUnaryFunctorImageFilter.h"
00032 
00033 namespace itk
00034 {
00044 namespace Functor
00045 {
00046 template< class TInput, class TOutput >
00047 class BoundedReciprocal
00048 {
00049 public:
00050   BoundedReciprocal() {}
00051   ~BoundedReciprocal() {}
00052   bool operator!=(const BoundedReciprocal &) const
00053   {
00054     return false;
00055   }
00056 
00057   bool operator==(const BoundedReciprocal & other) const
00058   {
00059     return !( *this != other );
00060   }
00061 
00062   inline TOutput operator()(const TInput & A) const
00063   {
00064     return static_cast< TOutput >( 1.0 / ( 1.0 +  static_cast< double >( A ) ) );
00065   }
00066 };
00067 }
00068 
00069 template< class TInputImage, class TOutputImage >
00070 class ITK_EXPORT BoundedReciprocalImageFilter:
00071   public
00072   UnaryFunctorImageFilter< TInputImage, TOutputImage,
00073                            Functor::BoundedReciprocal<
00074                              typename TInputImage::PixelType,
00075                              typename TOutputImage::PixelType > >
00076 {
00077 public:
00079   typedef BoundedReciprocalImageFilter Self;
00080   typedef UnaryFunctorImageFilter< TInputImage, TOutputImage,
00081                                    Functor::BoundedReciprocal<
00082                                      typename TInputImage::PixelType,
00083                                      typename TOutputImage::PixelType >
00084                                    >                                     Superclass;
00085 
00086   typedef SmartPointer< Self >       Pointer;
00087   typedef SmartPointer< const Self > ConstPointer;
00088 
00090   itkNewMacro(Self);
00091 
00093   itkTypeMacro(BoundedReciprocalImageFilter,
00094                UnaryFunctorImageFilter);
00095 
00096 #ifdef ITK_USE_CONCEPT_CHECKING
00097 
00098   itkConceptMacro( InputConvertibleToDoubleCheck,
00099                    ( Concept::Convertible< typename TInputImage::PixelType, double > ) );
00100   itkConceptMacro( DoubleConvertibleToOutputCheck,
00101                    ( Concept::Convertible< double, typename TOutputImage::PixelType > ) );
00102 
00104 #endif
00105 protected:
00106   BoundedReciprocalImageFilter() {}
00107   virtual ~BoundedReciprocalImageFilter() {}
00108 private:
00109   BoundedReciprocalImageFilter(const Self &); //purposely not implemented
00110   void operator=(const Self &);               //purposely not implemented
00111 };
00112 } // end namespace itk
00114 
00115 #endif
00116