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<h1>itkSigmoidImageFilter.h</h1><a href="itkSigmoidImageFilter_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 & Registration Toolkit</span>
<a name="l00004"></a>00004 <span class="comment"> Module: $RCSfile: itkSigmoidImageFilter.h,v $</span>
<a name="l00005"></a>00005 <span class="comment"> Language: C++</span>
<a name="l00006"></a>00006 <span class="comment"> Date: $Date: 2008-10-24 08:14:12 $</span>
<a name="l00007"></a>00007 <span class="comment"> Version: $Revision: 1.16 $</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 __itkSigmoidImageFilter_h</span>
<a name="l00018"></a>00018 <span class="preprocessor"></span><span class="preprocessor">#define __itkSigmoidImageFilter_h</span>
<a name="l00019"></a>00019 <span class="preprocessor"></span>
<a name="l00020"></a>00020 <span class="preprocessor">#include "<a class="code" href="itkUnaryFunctorImageFilter_8h.html">itkUnaryFunctorImageFilter.h</a>"</span>
<a name="l00021"></a>00021
<a name="l00022"></a>00022 <span class="keyword">namespace </span>itk
<a name="l00023"></a>00023 {
<a name="l00024"></a>00024
<a name="l00042"></a>00042 <span class="keyword">namespace </span>Function {
<a name="l00043"></a>00043 <span class="keyword">template</span>< <span class="keyword">class</span> TInput, <span class="keyword">class</span> TOutput>
<a name="l00044"></a><a class="code" href="classitk_1_1Function_1_1Sigmoid.html">00044</a> <span class="keyword">class </span><a class="code" href="classitk_1_1Function_1_1Sigmoid.html">Sigmoid</a>
<a name="l00045"></a>00045 {
<a name="l00046"></a>00046 <span class="keyword">public</span>:
<a name="l00047"></a><a class="code" href="classitk_1_1Function_1_1Sigmoid.html#5f232004c7121fe6255664c1ef642830">00047</a> <a class="code" href="classitk_1_1Function_1_1Sigmoid.html#5f232004c7121fe6255664c1ef642830">Sigmoid</a>()
<a name="l00048"></a>00048 {
<a name="l00049"></a>00049 m_Alpha = 1.0;
<a name="l00050"></a>00050 m_Beta = 0.0;
<a name="l00051"></a>00051 m_OutputMinimum = NumericTraits< TOutput >::min();
<a name="l00052"></a>00052 m_OutputMaximum = NumericTraits< TOutput >::max();
<a name="l00053"></a>00053 }
<a name="l00054"></a><a class="code" href="classitk_1_1Function_1_1Sigmoid.html#60bdfd97488d783963505205c54ac5cc">00054</a> <a class="code" href="classitk_1_1Function_1_1Sigmoid.html#60bdfd97488d783963505205c54ac5cc">~Sigmoid</a>() {};
<a name="l00055"></a><a class="code" href="classitk_1_1Function_1_1Sigmoid.html#fa52541a674d22764e93e94ba845aeaf">00055</a> <span class="keywordtype">bool</span> <a class="code" href="classitk_1_1Function_1_1Sigmoid.html#fa52541a674d22764e93e94ba845aeaf">operator!=</a>( <span class="keyword">const</span> <a class="code" href="classitk_1_1Function_1_1Sigmoid.html">Sigmoid</a> & other )<span class="keyword"> const</span>
<a name="l00056"></a>00056 <span class="keyword"> </span>{
<a name="l00057"></a>00057 <span class="keywordflow">if</span>( m_Alpha != other.m_Alpha ||
<a name="l00058"></a>00058 m_Beta != other.m_Beta ||
<a name="l00059"></a>00059 m_OutputMaximum != other.m_OutputMaximum ||
<a name="l00060"></a>00060 m_OutputMinimum != other.m_OutputMinimum )
<a name="l00061"></a>00061 {
<a name="l00062"></a>00062 <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00063"></a>00063 }
<a name="l00064"></a>00064 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00065"></a>00065 }
<a name="l00066"></a><a class="code" href="classitk_1_1Function_1_1Sigmoid.html#35816a2a54826b3d4328e5a3bab1df41">00066</a> <span class="keywordtype">bool</span> <a class="code" href="classitk_1_1Function_1_1Sigmoid.html#35816a2a54826b3d4328e5a3bab1df41">operator==</a>( <span class="keyword">const</span> <a class="code" href="classitk_1_1Function_1_1Sigmoid.html">Sigmoid</a> & other )<span class="keyword"> const</span>
<a name="l00067"></a>00067 <span class="keyword"> </span>{
<a name="l00068"></a>00068 <span class="keywordflow">return</span> !(*<span class="keyword">this</span> != other);
<a name="l00069"></a>00069 }
<a name="l00070"></a>00070
<a name="l00071"></a><a class="code" href="classitk_1_1Function_1_1Sigmoid.html#b05b5eac75b5a8dbda6224bbf138567a">00071</a> <span class="keyword">inline</span> TOutput <a class="code" href="classitk_1_1Function_1_1Sigmoid.html#b05b5eac75b5a8dbda6224bbf138567a">operator()</a>( <span class="keyword">const</span> TInput & <a class="code" href="classA.html">A</a> )
<a name="l00072"></a>00072 {
<a name="l00073"></a>00073 <span class="keyword">const</span> <span class="keywordtype">double</span> x = ( <span class="keyword">static_cast<</span><span class="keywordtype">double</span><span class="keyword">></span>(A) - m_Beta ) / m_Alpha;
<a name="l00074"></a>00074 <span class="keyword">const</span> <span class="keywordtype">double</span> e = 1.0 / ( 1.0 + vcl_exp(- x ) );
<a name="l00075"></a>00075 <span class="keyword">const</span> <span class="keywordtype">double</span> v =
<a name="l00076"></a>00076 (m_OutputMaximum - m_OutputMinimum ) * e + m_OutputMinimum;
<a name="l00077"></a>00077 <span class="keywordflow">return</span> <span class="keyword">static_cast<</span>TOutput<span class="keyword">></span>( v );
<a name="l00078"></a>00078 }
<a name="l00079"></a><a class="code" href="classitk_1_1Function_1_1Sigmoid.html#a0f387e1749cbb71e5ac2110625e44ef">00079</a> <span class="keywordtype">void</span> <a class="code" href="classitk_1_1Function_1_1Sigmoid.html#a0f387e1749cbb71e5ac2110625e44ef">SetAlpha</a>( <span class="keywordtype">double</span> alpha )
<a name="l00080"></a>00080 {
<a name="l00081"></a>00081 m_Alpha = alpha;
<a name="l00082"></a>00082 }
<a name="l00083"></a><a class="code" href="classitk_1_1Function_1_1Sigmoid.html#6ea254755f0ec6ac0ecc5c38d790ec1f">00083</a> <span class="keywordtype">void</span> <a class="code" href="classitk_1_1Function_1_1Sigmoid.html#6ea254755f0ec6ac0ecc5c38d790ec1f">SetBeta</a>( <span class="keywordtype">double</span> beta )
<a name="l00084"></a>00084 {
<a name="l00085"></a>00085 m_Beta = beta;
<a name="l00086"></a>00086 }
<a name="l00087"></a><a class="code" href="classitk_1_1Function_1_1Sigmoid.html#00af50bc2bd7b94ec06e9e1dc92f299b">00087</a> <span class="keywordtype">double</span> <a class="code" href="classitk_1_1Function_1_1Sigmoid.html#00af50bc2bd7b94ec06e9e1dc92f299b">GetAlpha</a>()<span class="keyword"> const</span>
<a name="l00088"></a>00088 <span class="keyword"> </span>{
<a name="l00089"></a>00089 <span class="keywordflow">return</span> m_Alpha;
<a name="l00090"></a>00090 }
<a name="l00091"></a><a class="code" href="classitk_1_1Function_1_1Sigmoid.html#9ab843bd6053f350fcf8d0300a5c6330">00091</a> <span class="keywordtype">double</span> <a class="code" href="classitk_1_1Function_1_1Sigmoid.html#9ab843bd6053f350fcf8d0300a5c6330">GetBeta</a>()<span class="keyword"> const</span>
<a name="l00092"></a>00092 <span class="keyword"> </span>{
<a name="l00093"></a>00093 <span class="keywordflow">return</span> m_Beta;
<a name="l00094"></a>00094 }
<a name="l00095"></a><a class="code" href="classitk_1_1Function_1_1Sigmoid.html#44db7fd2515a29ed578b7eda14a5c086">00095</a> <span class="keywordtype">void</span> <a class="code" href="classitk_1_1Function_1_1Sigmoid.html#44db7fd2515a29ed578b7eda14a5c086">SetOutputMinimum</a>( TOutput min )
<a name="l00096"></a>00096 {
<a name="l00097"></a>00097 m_OutputMinimum = min;
<a name="l00098"></a>00098 }
<a name="l00099"></a><a class="code" href="classitk_1_1Function_1_1Sigmoid.html#398765442a35afebb88a156b54f49ddb">00099</a> <span class="keywordtype">void</span> <a class="code" href="classitk_1_1Function_1_1Sigmoid.html#398765442a35afebb88a156b54f49ddb">SetOutputMaximum</a>( TOutput max )
<a name="l00100"></a>00100 {
<a name="l00101"></a>00101 m_OutputMaximum = max;
<a name="l00102"></a>00102 }
<a name="l00103"></a><a class="code" href="classitk_1_1Function_1_1Sigmoid.html#4421ac18728052eefc91e8fcc9a84e05">00103</a> TOutput <a class="code" href="classitk_1_1Function_1_1Sigmoid.html#4421ac18728052eefc91e8fcc9a84e05">GetOutputMinimum</a>()<span class="keyword"> const</span>
<a name="l00104"></a>00104 <span class="keyword"> </span>{
<a name="l00105"></a>00105 <span class="keywordflow">return</span> m_OutputMinimum;
<a name="l00106"></a>00106 }
<a name="l00107"></a><a class="code" href="classitk_1_1Function_1_1Sigmoid.html#18f792d158e3399ea610bbfbfe5b9016">00107</a> TOutput <a class="code" href="classitk_1_1Function_1_1Sigmoid.html#18f792d158e3399ea610bbfbfe5b9016">GetOutputMaximum</a>()<span class="keyword"> const</span>
<a name="l00108"></a>00108 <span class="keyword"> </span>{
<a name="l00109"></a>00109 <span class="keywordflow">return</span> m_OutputMaximum;
<a name="l00110"></a>00110 }
<a name="l00111"></a>00111
<a name="l00112"></a>00112 <span class="keyword">private</span>:
<a name="l00113"></a>00113 <span class="keywordtype">double</span> m_Alpha;
<a name="l00114"></a>00114 <span class="keywordtype">double</span> m_Beta;
<a name="l00115"></a>00115 TOutput m_OutputMinimum;
<a name="l00116"></a>00116 TOutput m_OutputMaximum;
<a name="l00117"></a>00117 };
<a name="l00118"></a>00118 }
<a name="l00119"></a>00119
<a name="l00120"></a>00120
<a name="l00121"></a>00121 <span class="keyword">template</span> <<span class="keyword">class</span> TInputImage, <span class="keyword">class</span> TOutputImage>
<a name="l00122"></a><a class="code" href="classitk_1_1SigmoidImageFilter.html">00122</a> <span class="keyword">class </span><a class="code" href="itkWin32Header_8h.html#7d4384322557205d75f0719c012dded6">ITK_EXPORT</a> <a class="code" href="classitk_1_1SigmoidImageFilter.html" title="Computes the sigmoid function pixel-wise.">SigmoidImageFilter</a> :
<a name="l00123"></a>00123 <span class="keyword">public</span>
<a name="l00124"></a>00124 <a class="code" href="classitk_1_1UnaryFunctorImageFilter.html" title="Implements pixel-wise generic operation on one image.">UnaryFunctorImageFilter</a><TInputImage,TOutputImage,
<a name="l00125"></a>00125 Function::Sigmoid<
<a name="l00126"></a>00126 typename TInputImage::PixelType,
<a name="l00127"></a>00127 typename TOutputImage::PixelType> >
<a name="l00128"></a>00128 {
<a name="l00129"></a>00129 <span class="keyword">public</span>:
<a name="l00131"></a><a class="code" href="classitk_1_1SigmoidImageFilter.html#b4009e2f3eb7876bd6759dd7f1a1869f">00131</a> <span class="keyword">typedef</span> <a class="code" href="classitk_1_1SigmoidImageFilter.html" title="Computes the sigmoid function pixel-wise.">SigmoidImageFilter</a> <a class="code" href="classitk_1_1SigmoidImageFilter.html" title="Computes the sigmoid function pixel-wise.">Self</a>;
<a name="l00132"></a>00132 <span class="keyword">typedef</span> <a class="code" href="classitk_1_1UnaryFunctorImageFilter.html" title="Implements pixel-wise generic operation on one image.">UnaryFunctorImageFilter</a><
<a name="l00133"></a>00133 TInputImage,TOutputImage,
<a name="l00134"></a>00134 <a class="code" href="classitk_1_1Function_1_1Sigmoid.html">Function::Sigmoid</a>< <span class="keyword">typename</span> TInputImage::PixelType,
<a name="l00135"></a><a class="code" href="classitk_1_1SigmoidImageFilter.html#558a34b495ce0eed73454351cf46f8d1">00135</a> <span class="keyword">typename</span> TOutputImage::PixelType> > <a class="code" href="classitk_1_1UnaryFunctorImageFilter.html" title="Implements pixel-wise generic operation on one image.">Superclass</a>;
<a name="l00136"></a><a class="code" href="classitk_1_1SigmoidImageFilter.html#b69d55169097bd2334e08e3813c7e43d">00136</a> <span class="keyword">typedef</span> <a class="code" href="classitk_1_1SmartPointer.html">SmartPointer<Self></a> <a class="code" href="classitk_1_1SmartPointer.html">Pointer</a>;
<a name="l00137"></a><a class="code" href="classitk_1_1SigmoidImageFilter.html#d1eec4e58f00bc3f380e4920638c1fd3">00137</a> <span class="keyword">typedef</span> <a class="code" href="classitk_1_1SmartPointer.html">SmartPointer<const Self></a> <a class="code" href="classitk_1_1SmartPointer.html">ConstPointer</a>;
<a name="l00138"></a>00138
<a name="l00139"></a><a class="code" href="classitk_1_1SigmoidImageFilter.html#52bda21380277e7918451e27cd3a71ab">00139</a> <span class="keyword">typedef</span> <span class="keyword">typename</span> TOutputImage::PixelType <a class="code" href="namespaceHardConnectedComponentImageFilter.html#73549c9066bb62470db248f27cde10d2">OutputPixelType</a>;
<a name="l00140"></a>00140
<a name="l00142"></a>00142 <a class="code" href="itkMacro_8h.html#0fdc15685afa271857c57e7cd482f30c">itkNewMacro</a>(<a class="code" href="classitk_1_1SigmoidImageFilter.html" title="Computes the sigmoid function pixel-wise.">Self</a>);
<a name="l00143"></a>00143
<a name="l00145"></a>00145 <a class="code" href="itkMacro_8h.html#574c1f86661d409dd32c742307a0e96a">itkTypeMacro</a>( <a class="code" href="classitk_1_1SigmoidImageFilter.html" title="Computes the sigmoid function pixel-wise.">SigmoidImageFilter</a>, <a class="code" href="classitk_1_1UnaryFunctorImageFilter.html" title="Implements pixel-wise generic operation on one image.">UnaryFunctorImageFilter</a> );
<a name="l00146"></a>00146
<a name="l00147"></a><a class="code" href="classitk_1_1SigmoidImageFilter.html#f9142943beb00416f7fb5b13e858b1e9">00147</a> <span class="keywordtype">void</span> SetAlpha( <span class="keywordtype">double</span> alpha )
<a name="l00148"></a>00148 {
<a name="l00149"></a>00149 <span class="keywordflow">if</span>( alpha == this->GetFunctor().GetAlpha() )
<a name="l00150"></a>00150 {
<a name="l00151"></a>00151 <span class="keywordflow">return</span>;
<a name="l00152"></a>00152 }
<a name="l00153"></a>00153 this->GetFunctor().SetAlpha( alpha );
<a name="l00154"></a>00154 this->Modified();
<a name="l00155"></a>00155 }
<a name="l00156"></a>00156
<a name="l00157"></a><a class="code" href="classitk_1_1SigmoidImageFilter.html#f1aa040657f9e65506c91cd106ca85a7">00157</a> <span class="keywordtype">void</span> SetBeta( <span class="keywordtype">double</span> beta )
<a name="l00158"></a>00158 {
<a name="l00159"></a>00159 <span class="keywordflow">if</span>( beta == this->GetFunctor().GetBeta() )
<a name="l00160"></a>00160 {
<a name="l00161"></a>00161 <span class="keywordflow">return</span>;
<a name="l00162"></a>00162 }
<a name="l00163"></a>00163 this->GetFunctor().SetBeta( beta );
<a name="l00164"></a>00164 this->Modified();
<a name="l00165"></a>00165 }
<a name="l00166"></a>00166
<a name="l00167"></a><a class="code" href="classitk_1_1SigmoidImageFilter.html#022c51da44d725993dd678648fbdb466">00167</a> <span class="keywordtype">void</span> SetOutputMinimum( <a class="code" href="namespaceHardConnectedComponentImageFilter.html#73549c9066bb62470db248f27cde10d2">OutputPixelType</a> min )
<a name="l00168"></a>00168 {
<a name="l00169"></a>00169 <span class="keywordflow">if</span>( min == this->GetFunctor().GetOutputMinimum() )
<a name="l00170"></a>00170 {
<a name="l00171"></a>00171 <span class="keywordflow">return</span>;
<a name="l00172"></a>00172 }
<a name="l00173"></a>00173 this->GetFunctor().SetOutputMinimum( min );
<a name="l00174"></a>00174 this->Modified();
<a name="l00175"></a>00175 }
<a name="l00176"></a>00176
<a name="l00177"></a><a class="code" href="classitk_1_1SigmoidImageFilter.html#a5d389b38494bf8781451234a9a8004e">00177</a> <span class="keywordtype">void</span> SetOutputMaximum( <a class="code" href="namespaceHardConnectedComponentImageFilter.html#73549c9066bb62470db248f27cde10d2">OutputPixelType</a> max )
<a name="l00178"></a>00178 {
<a name="l00179"></a>00179 <span class="keywordflow">if</span>( max == this->GetFunctor().GetOutputMaximum() )
<a name="l00180"></a>00180 {
<a name="l00181"></a>00181 <span class="keywordflow">return</span>;
<a name="l00182"></a>00182 }
<a name="l00183"></a>00183 this->GetFunctor().SetOutputMaximum( max );
<a name="l00184"></a>00184 this->Modified();
<a name="l00185"></a>00185 }
<a name="l00186"></a>00186
<a name="l00187"></a>00187 <span class="preprocessor">#ifdef ITK_USE_CONCEPT_CHECKING</span>
<a name="l00188"></a>00188 <span class="preprocessor"></span>
<a name="l00189"></a>00189 <a class="code" href="itkConceptChecking_8h.html#009eae6c305d9c390972159815e6a710">itkConceptMacro</a>(InputConvertibleToDoubleCheck,
<a name="l00190"></a>00190 (<a class="code" href="structitk_1_1Concept_1_1Convertible.html">Concept::Convertible<typename TInputImage::PixelType, double></a>));
<a name="l00191"></a>00191 <a class="code" href="itkConceptChecking_8h.html#009eae6c305d9c390972159815e6a710">itkConceptMacro</a>(OutputAdditiveOperatorsCheck,
<a name="l00192"></a>00192 (<a class="code" href="structitk_1_1Concept_1_1AdditiveOperators.html">Concept::AdditiveOperators<OutputPixelType></a>));
<a name="l00193"></a>00193 <a class="code" href="itkConceptChecking_8h.html#009eae6c305d9c390972159815e6a710">itkConceptMacro</a>(DoubleConvertibleToOutputCheck,
<a name="l00194"></a>00194 (<a class="code" href="structitk_1_1Concept_1_1Convertible.html">Concept::Convertible<double, OutputPixelType></a>));
<a name="l00195"></a>00195 <a class="code" href="itkConceptChecking_8h.html#009eae6c305d9c390972159815e6a710">itkConceptMacro</a>(OutputTimesDoubleCheck,
<a name="l00196"></a>00196 (<a class="code" href="structitk_1_1Concept_1_1MultiplyOperator.html">Concept::MultiplyOperator<OutputPixelType, double></a>));
<a name="l00197"></a>00197 <a class="code" href="itkConceptChecking_8h.html#009eae6c305d9c390972159815e6a710">itkConceptMacro</a>(OutputDoubleAdditiveOperatorsCheck,
<a name="l00198"></a>00198 (<a class="code" href="structitk_1_1Concept_1_1AdditiveOperators.html">Concept::AdditiveOperators<OutputPixelType, OutputPixelType, double></a>));
<a name="l00199"></a>00199
<a name="l00201"></a>00201 <span class="preprocessor">#endif</span>
<a name="l00202"></a>00202 <span class="preprocessor"></span>
<a name="l00203"></a>00203 <span class="keyword">protected</span>:
<a name="l00204"></a><a class="code" href="classitk_1_1SigmoidImageFilter.html#3baaf1757408de6e66ce6973d11d96d5">00204</a> <a class="code" href="classitk_1_1SigmoidImageFilter.html#3baaf1757408de6e66ce6973d11d96d5">SigmoidImageFilter</a>() {}
<a name="l00205"></a><a class="code" href="classitk_1_1SigmoidImageFilter.html#bad9a6bf9cd6b16f16668e9c6f0ecf40">00205</a> <span class="keyword">virtual</span> <a class="code" href="classitk_1_1SigmoidImageFilter.html#bad9a6bf9cd6b16f16668e9c6f0ecf40">~SigmoidImageFilter</a>() {}
<a name="l00206"></a>00206
<a name="l00207"></a>00207 <span class="keyword">private</span>:
<a name="l00208"></a>00208 <a class="code" href="classitk_1_1SigmoidImageFilter.html" title="Computes the sigmoid function pixel-wise.">SigmoidImageFilter</a>(<span class="keyword">const</span> <a class="code" href="namespaceHardConnectedComponentImageFilter.html#ac7d0120fe5292cdcdddb6163b8cb150">Self</a>&); <span class="comment">//purposely not implemented</span>
<a name="l00209"></a>00209 <span class="keywordtype">void</span> operator=(<span class="keyword">const</span> <a class="code" href="namespaceHardConnectedComponentImageFilter.html#ac7d0120fe5292cdcdddb6163b8cb150">Self</a>&); <span class="comment">//purposely not implemented</span>
<a name="l00210"></a>00210
<a name="l00211"></a>00211 };
<a name="l00212"></a>00212
<a name="l00213"></a>00213 } <span class="comment">// end namespace itk</span>
<a name="l00214"></a>00214
<a name="l00215"></a>00215
<a name="l00216"></a>00216 <span class="preprocessor">#endif</span>
<a name="l00217"></a>00217 <span class="preprocessor"></span>
</pre></div></div>
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