ITK
4.1.0
Insight Segmentation and Registration Toolkit
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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 __itkVectorCentralDifferenceImageFunction_h 00019 #define __itkVectorCentralDifferenceImageFunction_h 00020 00021 #include "itkImageFunction.h" 00022 #include "itkMatrix.h" 00023 00024 namespace itk 00025 { 00026 #ifndef __itkVectorInterpolateImageFunction_h 00027 00033 template< typename T > 00034 struct GetDimension { 00035 itkStaticConstMacro(Dimension, int, T::Dimension); 00036 }; 00037 #endif 00038 00057 template< 00058 class TInputImage, 00059 class TCoordRep = float > 00060 class ITK_EXPORT VectorCentralDifferenceImageFunction: 00061 public ImageFunction< TInputImage, 00062 Matrix< double, \ 00063 ::itk::GetDimension< typename TInputImage::PixelType >::Dimension, \ 00064 ::itk::GetImageDimension< TInputImage >::ImageDimension >, 00065 TCoordRep > 00066 { 00067 public: 00068 typedef typename TInputImage::PixelType InputPixelType; 00069 00071 itkStaticConstMacro(Dimension, unsigned int, 00072 InputPixelType::Dimension); 00073 00075 itkStaticConstMacro(ImageDimension, unsigned int, 00076 TInputImage::ImageDimension); 00077 00079 typedef VectorCentralDifferenceImageFunction Self; 00080 typedef ImageFunction< TInputImage, 00081 Matrix< double, itkGetStaticConstMacro(Dimension), 00082 itkGetStaticConstMacro(ImageDimension) >, 00083 TCoordRep > Superclass; 00084 typedef SmartPointer< Self > Pointer; 00085 typedef SmartPointer< const Self > ConstPointer; 00087 00089 itkTypeMacro(VectorCentralDifferenceImageFunction, ImageFunction); 00090 00092 itkNewMacro(Self); 00093 00095 typedef TInputImage InputImageType; 00096 00098 typedef typename Superclass::OutputType OutputType; 00099 00101 typedef typename Superclass::IndexType IndexType; 00102 00104 typedef typename Superclass::ContinuousIndexType ContinuousIndexType; 00105 00107 typedef typename Superclass::PointType PointType; 00108 00116 virtual OutputType EvaluateAtIndex(const IndexType & index) const; 00117 00126 virtual OutputType Evaluate(const PointType & point) const 00127 { 00128 IndexType index; 00129 00130 this->ConvertPointToNearestIndex(point, index); 00131 return this->EvaluateAtIndex(index); 00132 } 00133 00134 virtual OutputType EvaluateAtContinuousIndex( 00135 const ContinuousIndexType & cindex) const 00136 { 00137 IndexType index; 00138 00139 this->ConvertContinuousIndexToNearestIndex(cindex, index); 00140 return this->EvaluateAtIndex(index); 00141 } 00142 00153 itkSetMacro(UseImageDirection, bool); 00154 itkGetConstMacro(UseImageDirection, bool); 00155 itkBooleanMacro(UseImageDirection); 00156 protected: 00157 VectorCentralDifferenceImageFunction(); 00158 ~VectorCentralDifferenceImageFunction(){} 00159 void PrintSelf(std::ostream & os, Indent indent) const; 00161 00162 private: 00163 VectorCentralDifferenceImageFunction(const Self &); //purposely not 00164 // implemented 00165 void operator=(const Self &); //purposely not 00166 // implemented 00167 00168 // flag to take or not the image direction into account 00169 // when computing the derivatives. 00170 bool m_UseImageDirection; 00171 }; 00172 } // end namespace itk 00173 00174 #ifndef ITK_MANUAL_INSTANTIATION 00175 #include "itkVectorCentralDifferenceImageFunction.hxx" 00176 #endif 00177 00178 #endif 00179