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<h1>itkMutualInformationImageToImageMetric.h</h1><a href="itkMutualInformationImageToImageMetric_8h.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/*=========================================================================</span>
<a name="l00002"></a>00002 <span class="comment"></span>
<a name="l00003"></a>00003 <span class="comment">  Program:   Insight Segmentation &amp; Registration Toolkit</span>
<a name="l00004"></a>00004 <span class="comment">  Module:    $RCSfile: itkMutualInformationImageToImageMetric.h,v $</span>
<a name="l00005"></a>00005 <span class="comment">  Language:  C++</span>
<a name="l00006"></a>00006 <span class="comment">  Date:      $Date: 2009-01-26 21:45:52 $</span>
<a name="l00007"></a>00007 <span class="comment">  Version:   $Revision: 1.44 $</span>
<a name="l00008"></a>00008 <span class="comment"></span>
<a name="l00009"></a>00009 <span class="comment">  Copyright (c) Insight Software Consortium. All rights reserved.</span>
<a name="l00010"></a>00010 <span class="comment">  See ITKCopyright.txt or http://www.itk.org/HTML/Copyright.htm for details.</span>
<a name="l00011"></a>00011 <span class="comment"></span>
<a name="l00012"></a>00012 <span class="comment">     This software is distributed WITHOUT ANY WARRANTY; without even </span>
<a name="l00013"></a>00013 <span class="comment">     the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR </span>
<a name="l00014"></a>00014 <span class="comment">     PURPOSE.  See the above copyright notices for more information.</span>
<a name="l00015"></a>00015 <span class="comment"></span>
<a name="l00016"></a>00016 <span class="comment">=========================================================================*/</span>
<a name="l00017"></a>00017 <span class="preprocessor">#ifndef __itkMutualInformationImageToImageMetric_h</span>
<a name="l00018"></a>00018 <span class="preprocessor"></span><span class="preprocessor">#define __itkMutualInformationImageToImageMetric_h</span>
<a name="l00019"></a>00019 <span class="preprocessor"></span>
<a name="l00020"></a>00020 <span class="preprocessor">#include "<a class="code" href="itkImageToImageMetric_8h.html">itkImageToImageMetric.h</a>"</span>
<a name="l00021"></a>00021 <span class="preprocessor">#include "<a class="code" href="itkCovariantVector_8h.html">itkCovariantVector.h</a>"</span>
<a name="l00022"></a>00022 <span class="preprocessor">#include "<a class="code" href="itkPoint_8h.html">itkPoint.h</a>"</span>
<a name="l00023"></a>00023 
<a name="l00024"></a>00024 <span class="preprocessor">#include "<a class="code" href="itkIndex_8h.html">itkIndex.h</a>"</span>
<a name="l00025"></a>00025 <span class="preprocessor">#include "<a class="code" href="itkKernelFunction_8h.html">itkKernelFunction.h</a>"</span>
<a name="l00026"></a>00026 <span class="preprocessor">#include "<a class="code" href="itkCentralDifferenceImageFunction_8h.html">itkCentralDifferenceImageFunction.h</a>"</span>
<a name="l00027"></a>00027 
<a name="l00028"></a>00028 <span class="keyword">namespace </span>itk
<a name="l00029"></a>00029 {
<a name="l00030"></a>00030 
<a name="l00089"></a>00089 <span class="keyword">template</span> &lt;<span class="keyword">class</span> TFixedImage,<span class="keyword">class</span> TMovingImage &gt;
<a name="l00090"></a><a class="code" href="classitk_1_1MutualInformationImageToImageMetric.html">00090</a> <span class="keyword">class </span><a class="code" href="itkWin32Header_8h.html#7d4384322557205d75f0719c012dded6">ITK_EXPORT</a> <a class="code" href="classitk_1_1MutualInformationImageToImageMetric.html" title="Computes the mutual information between two images to be registered.">MutualInformationImageToImageMetric</a> :
<a name="l00091"></a>00091     <span class="keyword">public</span> <a class="code" href="classitk_1_1ImageToImageMetric.html" title="Computes similarity between regions of two images.">ImageToImageMetric</a>&lt; TFixedImage, TMovingImage &gt;
<a name="l00092"></a>00092 {
<a name="l00093"></a>00093 <span class="keyword">public</span>:
<a name="l00094"></a>00094 
<a name="l00096"></a><a class="code" href="classitk_1_1MutualInformationImageToImageMetric.html#093dac86d457857d78202d049ae87c58">00096</a>   <span class="keyword">typedef</span> <a class="code" href="classitk_1_1MutualInformationImageToImageMetric.html" title="Computes the mutual information between two images to be registered.">MutualInformationImageToImageMetric</a>             <a class="code" href="classitk_1_1MutualInformationImageToImageMetric.html" title="Computes the mutual information between two images to be registered.">Self</a>;
<a name="l00097"></a><a class="code" href="classitk_1_1MutualInformationImageToImageMetric.html#3b6356cf0f891c8acc6c78f5b63a933b">00097</a>   <span class="keyword">typedef</span> <a class="code" href="classitk_1_1ImageToImageMetric.html">ImageToImageMetric&lt; TFixedImage, TMovingImage &gt;</a> <a class="code" href="classitk_1_1ImageToImageMetric.html">Superclass</a>;
<a name="l00098"></a><a class="code" href="classitk_1_1MutualInformationImageToImageMetric.html#ef88eb3e099f365ec5a1254ec3550843">00098</a>   <span class="keyword">typedef</span> <a class="code" href="classitk_1_1SmartPointer.html">SmartPointer&lt;Self&gt;</a>                              <a class="code" href="classitk_1_1SmartPointer.html">Pointer</a>;
<a name="l00099"></a><a class="code" href="classitk_1_1MutualInformationImageToImageMetric.html#680c8c55dfb9625c87b870d8854f566f">00099</a>   <span class="keyword">typedef</span> <a class="code" href="classitk_1_1SmartPointer.html">SmartPointer&lt;const Self&gt;</a>                        <a class="code" href="classitk_1_1SmartPointer.html">ConstPointer</a>;
<a name="l00100"></a>00100 
<a name="l00102"></a>00102   <a class="code" href="itkMacro_8h.html#0fdc15685afa271857c57e7cd482f30c">itkNewMacro</a>(<a class="code" href="classitk_1_1MutualInformationImageToImageMetric.html" title="Computes the mutual information between two images to be registered.">Self</a>);
<a name="l00103"></a>00103 
<a name="l00105"></a><a class="code" href="classitk_1_1MutualInformationImageToImageMetric.html#04e94106870e268d1a29ca7d84fbe241">00105</a>   <a class="code" href="itkMacro_8h.html#574c1f86661d409dd32c742307a0e96a">itkTypeMacro</a>(<a class="code" href="classitk_1_1MutualInformationImageToImageMetric.html" title="Computes the mutual information between two images to be registered.">MutualInformationImageToImageMetric</a>, <a class="code" href="classitk_1_1ImageToImageMetric.html" title="Computes similarity between regions of two images.">ImageToImageMetric</a>);
<a name="l00106"></a>00106 
<a name="l00108"></a>00108   <span class="keyword">typedef</span> <span class="keyword">typename</span> <a class="code" href="classitk_1_1Transform.html" title="Transform points and vector from an input space to an output space.">Superclass::TransformType</a>            <a class="code" href="classitk_1_1Transform.html" title="Transform points and vector from an input space to an output space.">TransformType</a>;
<a name="l00109"></a><a class="code" href="classitk_1_1MutualInformationImageToImageMetric.html#0a6f433b4162252d7acefafd277baad2">00109</a>   <span class="keyword">typedef</span> <span class="keyword">typename</span> <a class="code" href="classitk_1_1SmartPointer.html">Superclass::TransformPointer</a>         <a class="code" href="classitk_1_1SmartPointer.html">TransformPointer</a>;
<a name="l00110"></a><a class="code" href="classitk_1_1MutualInformationImageToImageMetric.html#2f234f6ff535fdb813c1645f0bcfabf0">00110</a>   <span class="keyword">typedef</span> <span class="keyword">typename</span> <a class="code" href="classitk_1_1Array2D.html">Superclass::TransformJacobianType</a>    <a class="code" href="classitk_1_1Array2D.html">TransformJacobianType</a>;
<a name="l00111"></a><a class="code" href="classitk_1_1MutualInformationImageToImageMetric.html#69ad2cc11d77f41a44e875750c8d19fa">00111</a>   <span class="keyword">typedef</span> <span class="keyword">typename</span> <a class="code" href="classitk_1_1InterpolateImageFunction.html" title="Base class for all image interpolaters.">Superclass::InterpolatorType</a>         <a class="code" href="classitk_1_1InterpolateImageFunction.html" title="Base class for all image interpolaters.">InterpolatorType</a>;
<a name="l00112"></a><a class="code" href="classitk_1_1MutualInformationImageToImageMetric.html#54641ae3b6c31ec5e1661b8df0aad879">00112</a>   <span class="keyword">typedef</span> <span class="keyword">typename</span> Superclass::MeasureType              MeasureType;
<a name="l00113"></a><a class="code" href="classitk_1_1MutualInformationImageToImageMetric.html#7d9e6866afa5d0969ec19695d6ba225c">00113</a>   <span class="keyword">typedef</span> <span class="keyword">typename</span> <a class="code" href="classitk_1_1Array.html">Superclass::DerivativeType</a>           <a class="code" href="classitk_1_1Array.html">DerivativeType</a>;
<a name="l00114"></a><a class="code" href="classitk_1_1MutualInformationImageToImageMetric.html#655ef716620e258f9136c73d69d6ea3b">00114</a>   <span class="keyword">typedef</span> <span class="keyword">typename</span> <a class="code" href="classitk_1_1Array.html" title="Array class with size defined at construction time.">Superclass::ParametersType</a>           <a class="code" href="classitk_1_1Array.html" title="Array class with size defined at construction time.">ParametersType</a>;
<a name="l00115"></a><a class="code" href="classitk_1_1MutualInformationImageToImageMetric.html#33f2ed0ab5c7c143c702bc26b94a9047">00115</a>   <span class="keyword">typedef</span> <span class="keyword">typename</span> Superclass::FixedImageType           FixedImageType;
<a name="l00116"></a><a class="code" href="classitk_1_1MutualInformationImageToImageMetric.html#0aae1da288dd72c6133ae97535a71a89">00116</a>   <span class="keyword">typedef</span> <span class="keyword">typename</span> Superclass::MovingImageType          MovingImageType;
<a name="l00117"></a><a class="code" href="classitk_1_1MutualInformationImageToImageMetric.html#76063fe46c3e89a423fe550436db1920">00117</a>   <span class="keyword">typedef</span> <span class="keyword">typename</span> Superclass::FixedImageConstPointer   FixedImageConstPointer;
<a name="l00118"></a><a class="code" href="classitk_1_1MutualInformationImageToImageMetric.html#7f6a0e47362eb626d3af74ba6ef53b03">00118</a>   <span class="keyword">typedef</span> <span class="keyword">typename</span> Superclass::MovingImageConstPointer  MovingImageCosntPointer;
<a name="l00119"></a>00119 
<a name="l00121"></a><a class="code" href="classitk_1_1MutualInformationImageToImageMetric.html#5b1a70e056512c4559be01fce41f9c5c">00121</a>   <span class="keyword">typedef</span> <span class="keyword">typename</span> <a class="code" href="namespaceHardConnectedComponentImageFilter.html#be32dc19e71d40322ad9828b9ab40853">FixedImageType::IndexType</a>            FixedImageIndexType;
<a name="l00122"></a><a class="code" href="classitk_1_1MutualInformationImageToImageMetric.html#94804f15824bbd8ef77115ebe8e5d79e">00122</a>   <span class="keyword">typedef</span> <span class="keyword">typename</span> FixedImageIndexType::IndexValueType  FixedImageIndexValueType;
<a name="l00123"></a><a class="code" href="classitk_1_1MutualInformationImageToImageMetric.html#aac4d5a3b4f12efd0785dab235b42532">00123</a>   <span class="keyword">typedef</span> <span class="keyword">typename</span> <a class="code" href="namespaceHardConnectedComponentImageFilter.html#be32dc19e71d40322ad9828b9ab40853">MovingImageType::IndexType</a>           MovingImageIndexType;
<a name="l00124"></a><a class="code" href="classitk_1_1MutualInformationImageToImageMetric.html#1ac55b77ad4612d78cb89b86494cf29e">00124</a>   <span class="keyword">typedef</span> <span class="keyword">typename</span> <a class="code" href="classitk_1_1Point.html" title="A templated class holding a geometric point in n-Dimensional space.">TransformType::InputPointType</a>        <a class="code" href="classitk_1_1Point.html" title="A templated class holding a geometric point in n-Dimensional space.">FixedImagePointType</a>;
<a name="l00125"></a><a class="code" href="classitk_1_1MutualInformationImageToImageMetric.html#8c92f7ccaeb97fe8088d71e934764988">00125</a>   <span class="keyword">typedef</span> <span class="keyword">typename</span> <a class="code" href="classitk_1_1Point.html" title="A templated class holding a geometric point in n-Dimensional space.">TransformType::OutputPointType</a>       <a class="code" href="classitk_1_1Point.html" title="A templated class holding a geometric point in n-Dimensional space.">MovingImagePointType</a>;
<a name="l00126"></a>00126 
<a name="l00128"></a>00128   <a class="code" href="itkMacro_8h.html#1905cf6b2e88235996fa7ff73b2fb0eb">itkStaticConstMacro</a>(MovingImageDimension, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span>,
<a name="l00129"></a>00129                       MovingImageType::ImageDimension);
<a name="l00130"></a>00130 
<a name="l00132"></a>00132   <span class="keywordtype">void</span> GetDerivative( 
<a name="l00133"></a>00133     <span class="keyword">const</span> <a class="code" href="classitk_1_1Array.html" title="Array class with size defined at construction time.">ParametersType</a>&amp; parameters,
<a name="l00134"></a>00134     <a class="code" href="classitk_1_1Array.html">DerivativeType</a> &amp; Derivative ) <span class="keyword">const</span>;
<a name="l00135"></a>00135 
<a name="l00137"></a>00137   MeasureType GetValue( <span class="keyword">const</span> <a class="code" href="classitk_1_1Array.html" title="Array class with size defined at construction time.">ParametersType</a>&amp; parameters ) <span class="keyword">const</span>;
<a name="l00138"></a>00138 
<a name="l00140"></a>00140   <span class="keywordtype">void</span> GetValueAndDerivative( <span class="keyword">const</span> <a class="code" href="classitk_1_1Array.html" title="Array class with size defined at construction time.">ParametersType</a>&amp; parameters, 
<a name="l00141"></a>00141                               MeasureType&amp; Value, <a class="code" href="classitk_1_1Array.html">DerivativeType</a>&amp; Derivative ) <span class="keyword">const</span>;
<a name="l00142"></a>00142 
<a name="l00147"></a>00147   <span class="keywordtype">void</span> SetNumberOfSpatialSamples( <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> num );
<a name="l00148"></a>00148 
<a name="l00150"></a>00150   <a class="code" href="itkMacro_8h.html#7d989c13a1a213168db99ae0f84185d4">itkGetConstReferenceMacro</a>( NumberOfSpatialSamples, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> );
<a name="l00151"></a>00151 
<a name="l00157"></a>00157   <a class="code" href="itkMacro_8h.html#5cefe2f514fdc24c2484af7849042f18">itkSetClampMacro</a>( MovingImageStandardDeviation, <span class="keywordtype">double</span>, 
<a name="l00158"></a>00158                     NumericTraits&lt;double&gt;::NonpositiveMin(), NumericTraits&lt;double&gt;::max() );
<a name="l00159"></a>00159   <a class="code" href="itkMacro_8h.html#7d989c13a1a213168db99ae0f84185d4">itkGetConstReferenceMacro</a>( MovingImageStandardDeviation, <span class="keywordtype">double</span> );
<a name="l00161"></a>00161 
<a name="l00167"></a>00167   <a class="code" href="itkMacro_8h.html#5cefe2f514fdc24c2484af7849042f18">itkSetClampMacro</a>( FixedImageStandardDeviation, <span class="keywordtype">double</span>,
<a name="l00168"></a>00168                     NumericTraits&lt;double&gt;::NonpositiveMin(), NumericTraits&lt;double&gt;::max() );
<a name="l00169"></a>00169   <a class="code" href="itkMacro_8h.html#1600305bb01e39e87c472d8bf29bd1cf">itkGetMacro</a>( FixedImageStandardDeviation, <span class="keywordtype">double</span> );
<a name="l00171"></a>00171 
<a name="l00174"></a>00174   <a class="code" href="itkMacro_8h.html#b950b763422e5059348e6178e2a5f425">itkSetObjectMacro</a>( <a class="code" href="classitk_1_1KernelFunction.html" title="Kernel used for density estimation and nonparameteric regression.">KernelFunction</a>, <a class="code" href="classitk_1_1KernelFunction.html" title="Kernel used for density estimation and nonparameteric regression.">KernelFunction</a> );
<a name="l00175"></a>00175   <a class="code" href="itkMacro_8h.html#f6bef9ee7e4c077b96a08848ed4e7660">itkGetObjectMacro</a>( <a class="code" href="classitk_1_1KernelFunction.html" title="Kernel used for density estimation and nonparameteric regression.">KernelFunction</a>, <a class="code" href="classitk_1_1KernelFunction.html" title="Kernel used for density estimation and nonparameteric regression.">KernelFunction</a> );
<a name="l00177"></a>00177 
<a name="l00187"></a>00187   <span class="keywordtype">void</span> ReinitializeSeed();
<a name="l00188"></a>00188   <span class="keywordtype">void</span> ReinitializeSeed(<span class="keywordtype">int</span>);
<a name="l00190"></a>00190 
<a name="l00191"></a>00191 <span class="keyword">protected</span>:
<a name="l00192"></a>00192   <a class="code" href="classitk_1_1MutualInformationImageToImageMetric.html" title="Computes the mutual information between two images to be registered.">MutualInformationImageToImageMetric</a>();
<a name="l00193"></a><a class="code" href="classitk_1_1MutualInformationImageToImageMetric.html#9076fa7039f2397689faed5b3015b4b0">00193</a>   <span class="keyword">virtual</span> <a class="code" href="classitk_1_1MutualInformationImageToImageMetric.html#9076fa7039f2397689faed5b3015b4b0">~MutualInformationImageToImageMetric</a>() {};
<a name="l00194"></a>00194   <span class="keywordtype">void</span> <a class="code" href="namespaceHardConnectedComponentImageFilter.html#920ae03048a5ad715d803ca2e92b52de">PrintSelf</a>(std::ostream&amp; os, <a class="code" href="classitk_1_1Indent.html" title="Control indentation during Print() invocation.">Indent</a> indent) <span class="keyword">const</span>;
<a name="l00195"></a>00195 
<a name="l00196"></a>00196 <span class="keyword">private</span>:
<a name="l00197"></a>00197   <a class="code" href="classitk_1_1MutualInformationImageToImageMetric.html" title="Computes the mutual information between two images to be registered.">MutualInformationImageToImageMetric</a>(<span class="keyword">const</span> <a class="code" href="namespaceHardConnectedComponentImageFilter.html#ac7d0120fe5292cdcdddb6163b8cb150">Self</a>&amp;); <span class="comment">//purposely not implemented</span>
<a name="l00198"></a>00198   <span class="keywordtype">void</span> operator=(<span class="keyword">const</span> <a class="code" href="namespaceHardConnectedComponentImageFilter.html#ac7d0120fe5292cdcdddb6163b8cb150">Self</a>&amp;); <span class="comment">//purposely not implemented</span>
<a name="l00199"></a>00199   
<a name="l00203"></a>00203   <span class="keyword">class </span>SpatialSample
<a name="l00204"></a>00204     {
<a name="l00205"></a>00205     <span class="keyword">public</span>:
<a name="l00206"></a>00206     SpatialSample():FixedImageValue(0.0),MovingImageValue(0.0)
<a name="l00207"></a>00207       { FixedImagePointValue.Fill( 0.0 ); }
<a name="l00208"></a>00208     ~SpatialSample(){};
<a name="l00209"></a>00209 
<a name="l00210"></a>00210     FixedImagePointType              FixedImagePointValue;
<a name="l00211"></a>00211     <span class="keywordtype">double</span>                           FixedImageValue;
<a name="l00212"></a>00212     <span class="keywordtype">double</span>                           MovingImageValue;
<a name="l00213"></a>00213     };
<a name="l00214"></a>00214 
<a name="l00216"></a>00216   <span class="keyword">typedef</span> std::vector&lt;SpatialSample&gt;  SpatialSampleContainer;
<a name="l00217"></a>00217 
<a name="l00220"></a>00220   <span class="keyword">mutable</span> SpatialSampleContainer      m_SampleA;
<a name="l00221"></a>00221 
<a name="l00224"></a>00224   <span class="keyword">mutable</span> SpatialSampleContainer      m_SampleB;
<a name="l00225"></a>00225 
<a name="l00226"></a>00226   <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span>                        m_NumberOfSpatialSamples;
<a name="l00227"></a>00227   <span class="keywordtype">double</span>                              m_MovingImageStandardDeviation;
<a name="l00228"></a>00228   <span class="keywordtype">double</span>                              m_FixedImageStandardDeviation;
<a name="l00229"></a>00229   <span class="keyword">typename</span> <a class="code" href="classitk_1_1KernelFunction.html#fedf6664f8fb6650a77d37e05b8c2792">KernelFunction::Pointer</a>    m_KernelFunction;
<a name="l00230"></a>00230   <span class="keywordtype">double</span>                              m_MinProbability;
<a name="l00231"></a>00231 
<a name="l00237"></a>00237   <span class="keyword">virtual</span> <span class="keywordtype">void</span> SampleFixedImageDomain( SpatialSampleContainer&amp; samples ) <span class="keyword">const</span>;
<a name="l00238"></a>00238 
<a name="l00242"></a>00242   <span class="keywordtype">void</span> CalculateDerivatives( <span class="keyword">const</span> FixedImagePointType&amp; , DerivativeType&amp; ) <span class="keyword">const</span>;
<a name="l00243"></a>00243 
<a name="l00244"></a>00244   <span class="keyword">typedef</span> <span class="keyword">typename</span> Superclass::CoordinateRepresentationType  
<a name="l00245"></a>00245   CoordinateRepresentationType;
<a name="l00246"></a>00246   <span class="keyword">typedef</span> CentralDifferenceImageFunction&lt; MovingImageType, 
<a name="l00247"></a>00247                                           CoordinateRepresentationType &gt; DerivativeFunctionType;
<a name="l00248"></a>00248 
<a name="l00249"></a>00249   <span class="keyword">typename</span> <a class="code" href="itkFEMMacro_8h.html#539cce1a3282ba59952dedcbf9cdb23f">DerivativeFunctionType::Pointer</a>  m_DerivativeCalculator;
<a name="l00250"></a>00250 
<a name="l00251"></a>00251   <span class="keywordtype">bool</span>             m_ReseedIterator;
<a name="l00252"></a>00252   <span class="keywordtype">int</span>              m_RandomSeed;
<a name="l00253"></a>00253   
<a name="l00254"></a>00254 
<a name="l00255"></a>00255 };
<a name="l00256"></a>00256 
<a name="l00257"></a>00257 } <span class="comment">// end namespace itk</span>
<a name="l00258"></a>00258 
<a name="l00259"></a>00259 <span class="preprocessor">#ifndef ITK_MANUAL_INSTANTIATION</span>
<a name="l00260"></a>00260 <span class="preprocessor"></span><span class="preprocessor">#include "itkMutualInformationImageToImageMetric.txx"</span>
<a name="l00261"></a>00261 <span class="preprocessor">#endif</span>
<a name="l00262"></a>00262 <span class="preprocessor"></span>
<a name="l00263"></a>00263 <span class="preprocessor">#endif</span>
<a name="l00264"></a>00264 <span class="preprocessor"></span>
</pre></div></div>
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