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<h1>itkTestMain.h</h1><a href="itkTestMain_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: itkTestMain.h,v $</span>
<a name="l00005"></a>00005 <span class="comment">  Language:  C++</span>
<a name="l00006"></a>00006 <span class="comment">  Date:      $Date: 2008-11-09 18:18:51 $</span>
<a name="l00007"></a>00007 <span class="comment">  Version:   $Revision: 1.32 $</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">  Portions of this code are covered under the VTK copyright.</span>
<a name="l00013"></a>00013 <span class="comment">  See VTKCopyright.txt or http://www.kitware.com/VTKCopyright.htm for details.</span>
<a name="l00014"></a>00014 <span class="comment"></span>
<a name="l00015"></a>00015 <span class="comment">     This software is distributed WITHOUT ANY WARRANTY; without even </span>
<a name="l00016"></a>00016 <span class="comment">     the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR </span>
<a name="l00017"></a>00017 <span class="comment">     PURPOSE.  See the above copyright notices for more information.</span>
<a name="l00018"></a>00018 <span class="comment"></span>
<a name="l00019"></a>00019 <span class="comment">=========================================================================*/</span>
<a name="l00020"></a>00020 
<a name="l00021"></a>00021 <span class="comment">// This file is used to create TestDriver executables</span>
<a name="l00022"></a>00022 <span class="comment">// These executables are able to register a function pointer to a string name</span>
<a name="l00023"></a>00023 <span class="comment">// in a lookup table.   By including this file, it creates a main function</span>
<a name="l00024"></a>00024 <span class="comment">// that calls RegisterTests() then looks up the function pointer for the test</span>
<a name="l00025"></a>00025 <span class="comment">// specified on the command line.</span>
<a name="l00026"></a>00026 <span class="preprocessor">#include "<a class="code" href="itkWin32Header_8h.html">itkWin32Header.h</a>"</span>
<a name="l00027"></a>00027 <span class="preprocessor">#include &lt;map&gt;</span>
<a name="l00028"></a>00028 <span class="preprocessor">#include &lt;string&gt;</span>
<a name="l00029"></a>00029 <span class="preprocessor">#include &lt;iostream&gt;</span>
<a name="l00030"></a>00030 <span class="preprocessor">#include &lt;fstream&gt;</span>
<a name="l00031"></a>00031 <span class="preprocessor">#include "itkNumericTraits.h"</span>
<a name="l00032"></a>00032 <span class="preprocessor">#include "<a class="code" href="itkMultiThreader_8h.html">itkMultiThreader.h</a>"</span>
<a name="l00033"></a>00033 <span class="preprocessor">#include "<a class="code" href="itkImage_8h.html">itkImage.h</a>"</span>
<a name="l00034"></a>00034 <span class="preprocessor">#include "<a class="code" href="itkImageFileReader_8h.html">itkImageFileReader.h</a>"</span>
<a name="l00035"></a>00035 <span class="preprocessor">#include "<a class="code" href="itkImageFileWriter_8h.html">itkImageFileWriter.h</a>"</span>
<a name="l00036"></a>00036 <span class="preprocessor">#include "<a class="code" href="itkImageRegionConstIterator_8h.html">itkImageRegionConstIterator.h</a>"</span>
<a name="l00037"></a>00037 <span class="preprocessor">#include "<a class="code" href="itkSubtractImageFilter_8h.html">itkSubtractImageFilter.h</a>"</span>
<a name="l00038"></a>00038 <span class="preprocessor">#include "<a class="code" href="itkRescaleIntensityImageFilter_8h.html">itkRescaleIntensityImageFilter.h</a>"</span>
<a name="l00039"></a>00039 <span class="preprocessor">#include "<a class="code" href="itkExtractImageFilter_8h.html">itkExtractImageFilter.h</a>"</span>
<a name="l00040"></a>00040 <span class="preprocessor">#include "<a class="code" href="itkDifferenceImageFilter_8h.html">itkDifferenceImageFilter.h</a>"</span>
<a name="l00041"></a>00041 <span class="preprocessor">#include "<a class="code" href="itkImageRegion_8h.html">itkImageRegion.h</a>"</span>
<a name="l00042"></a>00042 <span class="preprocessor">#include "itksys/SystemTools.hxx"</span>
<a name="l00043"></a>00043 
<a name="l00044"></a><a class="code" href="itkTestMain_8h.html#5ae87fb2158f30c533661f95f07f4fae">00044</a> <span class="preprocessor">#define ITK_TEST_DIMENSION_MAX 6</span>
<a name="l00045"></a>00045 <span class="preprocessor"></span>
<a name="l00046"></a><a class="code" href="itkTestMain_8h.html#18b51f0919f129b467617d26958408c9">00046</a> <span class="keyword">typedef</span> int (*<a class="code" href="itkTestMain_8h.html#18b51f0919f129b467617d26958408c9">MainFuncPointer</a>)(int , <span class="keywordtype">char</span>* [] );
<a name="l00047"></a><a class="code" href="itkTestMain_8h.html#11204a5feee4ef83b8db406514cef2ff">00047</a> std::map&lt;std::string, MainFuncPointer&gt; <a class="code" href="itkTestMain_8h.html#11204a5feee4ef83b8db406514cef2ff">StringToTestFunctionMap</a>;
<a name="l00048"></a>00048 
<a name="l00049"></a><a class="code" href="itkTestMain_8h.html#9df66dcc0f3619dc87c8fa8edb356434">00049</a> <span class="preprocessor">#define REGISTER_TEST(test) \</span>
<a name="l00050"></a>00050 <span class="preprocessor">extern int test(int, char* [] ); \</span>
<a name="l00051"></a>00051 <span class="preprocessor">StringToTestFunctionMap[#test] = test</span>
<a name="l00052"></a>00052 <span class="preprocessor"></span>
<a name="l00053"></a>00053 <span class="keywordtype">int</span> <a class="code" href="itkTestMain_8h.html#f8dc81600084942e2002871d43189e18">RegressionTestImage</a> (<span class="keyword">const</span> <span class="keywordtype">char</span> *testImageFilename, 
<a name="l00054"></a>00054                          <span class="keyword">const</span> <span class="keywordtype">char</span> *baselineImageFilename, 
<a name="l00055"></a>00055                          <span class="keywordtype">int</span> reportErrors,
<a name="l00056"></a>00056                          <span class="keywordtype">double</span> intensityTolerance = 2.0,
<a name="l00057"></a>00057                          <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> numberOfPixelsTolerance = 0,
<a name="l00058"></a>00058                          <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> radiusTolerance = 0);
<a name="l00059"></a>00059 
<a name="l00060"></a>00060 std::map&lt;std::string,int&gt; <a class="code" href="itkTestMain_8h.html#7d92f4ecc3fe3b5ee5e4f44ebf769434">RegressionTestBaselines</a> (<span class="keywordtype">char</span> *);
<a name="l00061"></a>00061 
<a name="l00062"></a>00062 <span class="keywordtype">void</span> <a class="code" href="itkTestMain_8h.html#d7b8501e8086a10448dba6ac0d0d448c">RegisterTests</a>();
<a name="l00063"></a><a class="code" href="itkTestMain_8h.html#82c7008f0492455d1a90cd5b0982bf38">00063</a> <span class="keywordtype">void</span> <a class="code" href="itkTestMain_8h.html#82c7008f0492455d1a90cd5b0982bf38">PrintAvailableTests</a>()
<a name="l00064"></a>00064 {
<a name="l00065"></a>00065   std::cout &lt;&lt; <span class="stringliteral">"Available tests:\n"</span>;
<a name="l00066"></a>00066   std::map&lt;std::string, MainFuncPointer&gt;::iterator j = <a class="code" href="itkTestMain_8h.html#11204a5feee4ef83b8db406514cef2ff">StringToTestFunctionMap</a>.begin();
<a name="l00067"></a>00067   <span class="keywordtype">int</span> i = 0;
<a name="l00068"></a>00068   <span class="keywordflow">while</span>(j != <a class="code" href="itkTestMain_8h.html#11204a5feee4ef83b8db406514cef2ff">StringToTestFunctionMap</a>.end())
<a name="l00069"></a>00069     {
<a name="l00070"></a>00070     std::cout &lt;&lt; i &lt;&lt; <span class="stringliteral">". "</span> &lt;&lt; j-&gt;first &lt;&lt; <span class="stringliteral">"\n"</span>;
<a name="l00071"></a>00071     ++i;
<a name="l00072"></a>00072     ++j;
<a name="l00073"></a>00073     }
<a name="l00074"></a>00074 }
<a name="l00075"></a>00075 
<a name="l00076"></a><a class="code" href="itkTestMain_8h.html#dacbe0175a79dff748855d8c9839f82b">00076</a> <span class="keywordtype">int</span> <a class="code" href="itkTestMain_8h.html#dacbe0175a79dff748855d8c9839f82b">main</a>(<span class="keywordtype">int</span> ac, <span class="keywordtype">char</span>* av[] )
<a name="l00077"></a>00077 {
<a name="l00078"></a>00078   <span class="keywordtype">double</span> intensityTolerance  = 2.0;
<a name="l00079"></a>00079   <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> numberOfPixelsTolerance = 0;
<a name="l00080"></a>00080   <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> radiusTolerance = 0;
<a name="l00081"></a>00081 
<a name="l00082"></a>00082   <span class="keyword">typedef</span> std::pair&lt; char *, char *&gt; ComparePairType;
<a name="l00083"></a>00083   std::vector&lt; ComparePairType &gt; compareList;
<a name="l00084"></a>00084 
<a name="l00085"></a>00085   <a class="code" href="itkTestMain_8h.html#d7b8501e8086a10448dba6ac0d0d448c">RegisterTests</a>();
<a name="l00086"></a>00086   std::string testToRun;
<a name="l00087"></a>00087   <span class="keywordflow">if</span>(ac &lt; 2)
<a name="l00088"></a>00088     {
<a name="l00089"></a>00089     <a class="code" href="itkTestMain_8h.html#82c7008f0492455d1a90cd5b0982bf38">PrintAvailableTests</a>();
<a name="l00090"></a>00090     std::cout &lt;&lt; <span class="stringliteral">"To run a test, enter the test number: "</span>;
<a name="l00091"></a>00091     <span class="keywordtype">int</span> testNum = 0;
<a name="l00092"></a>00092     std::cin &gt;&gt; testNum;
<a name="l00093"></a>00093     std::map&lt;std::string, MainFuncPointer&gt;::iterator j = <a class="code" href="itkTestMain_8h.html#11204a5feee4ef83b8db406514cef2ff">StringToTestFunctionMap</a>.begin();
<a name="l00094"></a>00094     <span class="keywordtype">int</span> i = 0;
<a name="l00095"></a>00095     <span class="keywordflow">while</span>(j != <a class="code" href="itkTestMain_8h.html#11204a5feee4ef83b8db406514cef2ff">StringToTestFunctionMap</a>.end() &amp;&amp; i &lt; testNum)
<a name="l00096"></a>00096       {
<a name="l00097"></a>00097       ++i;
<a name="l00098"></a>00098       ++j;
<a name="l00099"></a>00099       }
<a name="l00100"></a>00100     <span class="keywordflow">if</span>(j == <a class="code" href="itkTestMain_8h.html#11204a5feee4ef83b8db406514cef2ff">StringToTestFunctionMap</a>.end())
<a name="l00101"></a>00101       {
<a name="l00102"></a>00102       std::cerr &lt;&lt; testNum &lt;&lt; <span class="stringliteral">" is an invalid test number\n"</span>;
<a name="l00103"></a>00103       <span class="keywordflow">return</span> -1;
<a name="l00104"></a>00104       }
<a name="l00105"></a>00105     testToRun = j-&gt;first;
<a name="l00106"></a>00106     }
<a name="l00107"></a>00107   <span class="keywordflow">else</span>
<a name="l00108"></a>00108     {
<a name="l00109"></a>00109     <span class="keywordflow">while</span>( ac &gt; 0 &amp;&amp; testToRun.empty() )
<a name="l00110"></a>00110       {
<a name="l00111"></a>00111       <span class="keywordflow">if</span> (strcmp(av[1], <span class="stringliteral">"--with-threads"</span>) == 0)
<a name="l00112"></a>00112         {
<a name="l00113"></a>00113         <span class="keywordtype">int</span> numThreads = atoi(av[2]);
<a name="l00114"></a>00114         <a class="code" href="classitk_1_1MultiThreader.html#de079d8e1c3581dc2ae5353aae5577a0">itk::MultiThreader::SetGlobalDefaultNumberOfThreads</a>(numThreads);
<a name="l00115"></a>00115         av += 2;
<a name="l00116"></a>00116         ac -= 2;
<a name="l00117"></a>00117         }
<a name="l00118"></a>00118       <span class="keywordflow">else</span> <span class="keywordflow">if</span> (strcmp(av[1], <span class="stringliteral">"--without-threads"</span>) == 0)
<a name="l00119"></a>00119         {
<a name="l00120"></a>00120         <a class="code" href="classitk_1_1MultiThreader.html#de079d8e1c3581dc2ae5353aae5577a0">itk::MultiThreader::SetGlobalDefaultNumberOfThreads</a>(1);
<a name="l00121"></a>00121         av += 1;
<a name="l00122"></a>00122         ac -= 1;
<a name="l00123"></a>00123         }
<a name="l00124"></a>00124       <span class="keywordflow">else</span> <span class="keywordflow">if</span> (ac &gt; 3 &amp;&amp; strcmp(av[1], <span class="stringliteral">"--compare"</span>) == 0)
<a name="l00125"></a>00125         {
<a name="l00126"></a>00126         compareList.push_back( ComparePairType( av[2], av[3] ) );
<a name="l00127"></a>00127         av += 3;
<a name="l00128"></a>00128         ac -= 3;
<a name="l00129"></a>00129         }
<a name="l00130"></a>00130       <span class="keywordflow">else</span> <span class="keywordflow">if</span> (ac &gt; 2 &amp;&amp; strcmp(av[1], <span class="stringliteral">"--compareNumberOfPixelsTolerance"</span>) == 0)
<a name="l00131"></a>00131         {
<a name="l00132"></a>00132         numberOfPixelsTolerance = atoi( av[2] );
<a name="l00133"></a>00133         av += 2;
<a name="l00134"></a>00134         ac -= 2;
<a name="l00135"></a>00135         }
<a name="l00136"></a>00136       <span class="keywordflow">else</span> <span class="keywordflow">if</span> (ac &gt; 2 &amp;&amp; strcmp(av[1], <span class="stringliteral">"--compareRadiusTolerance"</span>) == 0)
<a name="l00137"></a>00137         {
<a name="l00138"></a>00138         radiusTolerance = atoi( av[2] );
<a name="l00139"></a>00139         av += 2;
<a name="l00140"></a>00140         ac -= 2;
<a name="l00141"></a>00141         }
<a name="l00142"></a>00142       <span class="keywordflow">else</span> <span class="keywordflow">if</span> (ac &gt; 2 &amp;&amp; strcmp(av[1], <span class="stringliteral">"--compareIntensityTolerance"</span>) == 0)
<a name="l00143"></a>00143         {
<a name="l00144"></a>00144         intensityTolerance = atof( av[2] );
<a name="l00145"></a>00145         av += 2;
<a name="l00146"></a>00146         ac -= 2;
<a name="l00147"></a>00147         }
<a name="l00148"></a>00148       <span class="keywordflow">else</span>
<a name="l00149"></a>00149         {
<a name="l00150"></a>00150         testToRun = av[1];
<a name="l00151"></a>00151         }
<a name="l00152"></a>00152       }
<a name="l00153"></a>00153     }
<a name="l00154"></a>00154   std::map&lt;std::string, MainFuncPointer&gt;::iterator j = <a class="code" href="itkTestMain_8h.html#11204a5feee4ef83b8db406514cef2ff">StringToTestFunctionMap</a>.find(testToRun);
<a name="l00155"></a>00155   <span class="keywordflow">if</span>(j != <a class="code" href="itkTestMain_8h.html#11204a5feee4ef83b8db406514cef2ff">StringToTestFunctionMap</a>.end())
<a name="l00156"></a>00156     {
<a name="l00157"></a>00157     <a class="code" href="itkTestMain_8h.html#18b51f0919f129b467617d26958408c9">MainFuncPointer</a> f = j-&gt;second;
<a name="l00158"></a>00158     <span class="keywordtype">int</span> result;
<a name="l00159"></a>00159     <span class="keywordflow">try</span>
<a name="l00160"></a>00160       {
<a name="l00161"></a>00161       <span class="comment">// Invoke the test's "main" function.</span>
<a name="l00162"></a>00162       result = (*f)(ac-1, av+1);
<a name="l00163"></a>00163 
<a name="l00164"></a>00164       <span class="comment">// Make a list of possible baselines</span>
<a name="l00165"></a>00165       <span class="keywordflow">for</span>( <span class="keywordtype">int</span> i=0; i&lt;static_cast&lt;int&gt;(compareList.size()); i++)
<a name="l00166"></a>00166         {
<a name="l00167"></a>00167         <span class="keywordtype">char</span> * baselineFilename = compareList[i].first;
<a name="l00168"></a>00168         <span class="keywordtype">char</span> * testFilename = compareList[i].second;
<a name="l00169"></a>00169         std::map&lt;std::string,int&gt; baselines = <a class="code" href="itkTestMain_8h.html#7d92f4ecc3fe3b5ee5e4f44ebf769434">RegressionTestBaselines</a>(baselineFilename);
<a name="l00170"></a>00170         std::map&lt;std::string,int&gt;::iterator baseline = baselines.begin();
<a name="l00171"></a>00171         std::string bestBaseline;
<a name="l00172"></a>00172         <span class="keywordtype">int</span> bestBaselineStatus = itk::NumericTraits&lt;int&gt;::max();
<a name="l00173"></a>00173         <span class="keywordflow">while</span> (baseline != baselines.end())
<a name="l00174"></a>00174           {
<a name="l00175"></a>00175           baseline-&gt;second = <a class="code" href="itkTestMain_8h.html#f8dc81600084942e2002871d43189e18">RegressionTestImage</a>(testFilename,
<a name="l00176"></a>00176                                                  (baseline-&gt;first).c_str(),
<a name="l00177"></a>00177                                                  0, 
<a name="l00178"></a>00178                                                  intensityTolerance, 
<a name="l00179"></a>00179                                                  numberOfPixelsTolerance, 
<a name="l00180"></a>00180                                                  radiusTolerance );
<a name="l00181"></a>00181           <span class="keywordflow">if</span> (baseline-&gt;second &lt; bestBaselineStatus)
<a name="l00182"></a>00182             {
<a name="l00183"></a>00183             bestBaseline = baseline-&gt;first;
<a name="l00184"></a>00184             bestBaselineStatus = baseline-&gt;second;
<a name="l00185"></a>00185             }
<a name="l00186"></a>00186           <span class="keywordflow">if</span> (baseline-&gt;second == 0)
<a name="l00187"></a>00187             {
<a name="l00188"></a>00188             <span class="keywordflow">break</span>;
<a name="l00189"></a>00189             }
<a name="l00190"></a>00190           ++baseline;
<a name="l00191"></a>00191           }
<a name="l00192"></a>00192         <span class="comment">// if the best we can do still has errors, generate the error images</span>
<a name="l00193"></a>00193          <span class="keywordflow">if</span> (bestBaselineStatus)
<a name="l00194"></a>00194           {
<a name="l00195"></a>00195           <a class="code" href="itkTestMain_8h.html#f8dc81600084942e2002871d43189e18">RegressionTestImage</a>(testFilename,
<a name="l00196"></a>00196                               bestBaseline.c_str(),
<a name="l00197"></a>00197                               1, 
<a name="l00198"></a>00198                               intensityTolerance,
<a name="l00199"></a>00199                               numberOfPixelsTolerance, 
<a name="l00200"></a>00200                               radiusTolerance );
<a name="l00201"></a>00201           }
<a name="l00202"></a>00202 
<a name="l00203"></a>00203         <span class="comment">// output the matching baseline</span>
<a name="l00204"></a>00204         std::cout &lt;&lt; <span class="stringliteral">"&lt;DartMeasurement name=\"BaselineImageName\" type=\"text/string\"&gt;"</span>;
<a name="l00205"></a>00205         std::cout &lt;&lt; itksys::SystemTools::GetFilenameName(bestBaseline);
<a name="l00206"></a>00206         std::cout &lt;&lt; <span class="stringliteral">"&lt;/DartMeasurement&gt;"</span> &lt;&lt; std::endl;
<a name="l00207"></a>00207         
<a name="l00208"></a>00208         result += bestBaselineStatus;
<a name="l00209"></a>00209         }
<a name="l00210"></a>00210       }
<a name="l00211"></a>00211     <span class="keywordflow">catch</span>(<span class="keyword">const</span> itk::ExceptionObject&amp; e)
<a name="l00212"></a>00212       {
<a name="l00213"></a>00213       std::cerr &lt;&lt; <span class="stringliteral">"ITK test driver caught an ITK exception:\n"</span>;
<a name="l00214"></a>00214       e.Print(std::cerr);
<a name="l00215"></a>00215       result = -1;
<a name="l00216"></a>00216       }
<a name="l00217"></a>00217     <span class="keywordflow">catch</span>(<span class="keyword">const</span> std::exception&amp; e)
<a name="l00218"></a>00218       {
<a name="l00219"></a>00219       std::cerr &lt;&lt; <span class="stringliteral">"ITK test driver caught an exception:\n"</span>;
<a name="l00220"></a>00220       std::cerr &lt;&lt; e.what() &lt;&lt; <span class="stringliteral">"\n"</span>;
<a name="l00221"></a>00221       result = -1;
<a name="l00222"></a>00222       }
<a name="l00223"></a>00223     <span class="keywordflow">catch</span>(...)
<a name="l00224"></a>00224       {
<a name="l00225"></a>00225       std::cerr &lt;&lt; <span class="stringliteral">"ITK test driver caught an unknown exception!!!\n"</span>;
<a name="l00226"></a>00226       result = -1;
<a name="l00227"></a>00227       }
<a name="l00228"></a>00228     <span class="keywordflow">return</span> result;
<a name="l00229"></a>00229     }
<a name="l00230"></a>00230   <a class="code" href="itkTestMain_8h.html#82c7008f0492455d1a90cd5b0982bf38">PrintAvailableTests</a>();
<a name="l00231"></a>00231   std::cerr &lt;&lt; <span class="stringliteral">"Failed: "</span> &lt;&lt; testToRun &lt;&lt; <span class="stringliteral">": No test registered with name "</span> &lt;&lt; testToRun &lt;&lt; <span class="stringliteral">"\n"</span>;
<a name="l00232"></a>00232   <span class="keywordflow">return</span> -1;
<a name="l00233"></a>00233 }
<a name="l00234"></a>00234 
<a name="l00235"></a>00235 <span class="comment">// Regression Testing Code</span>
<a name="l00236"></a>00236 
<a name="l00237"></a><a class="code" href="itkTestMain_8h.html#f8dc81600084942e2002871d43189e18">00237</a> <span class="keywordtype">int</span> <a class="code" href="itkTestMain_8h.html#f8dc81600084942e2002871d43189e18">RegressionTestImage</a> (<span class="keyword">const</span> <span class="keywordtype">char</span> *testImageFilename, 
<a name="l00238"></a>00238                          <span class="keyword">const</span> <span class="keywordtype">char</span> *baselineImageFilename, 
<a name="l00239"></a>00239                          <span class="keywordtype">int</span> reportErrors,
<a name="l00240"></a>00240                          <span class="keywordtype">double</span> intensityTolerance,
<a name="l00241"></a>00241                          <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> numberOfPixelsTolerance, 
<a name="l00242"></a>00242                          <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> radiusTolerance )
<a name="l00243"></a>00243 {
<a name="l00244"></a>00244   <span class="comment">// Use the factory mechanism to read the test and baseline files and convert them to double</span>
<a name="l00245"></a>00245   <span class="keyword">typedef</span> <a class="code" href="classitk_1_1Image.html" title="Templated n-dimensional image class.">itk::Image&lt;double,ITK_TEST_DIMENSION_MAX&gt;</a> ImageType;
<a name="l00246"></a>00246   <span class="keyword">typedef</span> <a class="code" href="classitk_1_1Image.html" title="Templated n-dimensional image class.">itk::Image&lt;unsigned char,ITK_TEST_DIMENSION_MAX&gt;</a> OutputType;
<a name="l00247"></a>00247   <span class="keyword">typedef</span> <a class="code" href="classitk_1_1Image.html" title="Templated n-dimensional image class.">itk::Image&lt;unsigned char,2&gt;</a> DiffOutputType;
<a name="l00248"></a>00248   <span class="keyword">typedef</span> <a class="code" href="classitk_1_1ImageFileReader.html" title="Data source that reads image data from a single file.">itk::ImageFileReader&lt;ImageType&gt;</a> ReaderType;
<a name="l00249"></a>00249 
<a name="l00250"></a>00250   <span class="comment">// Read the baseline file</span>
<a name="l00251"></a>00251   <a class="code" href="itkFEMMacro_8h.html#539cce1a3282ba59952dedcbf9cdb23f">ReaderType::Pointer</a> baselineReader = <a class="code" href="namespaceHardConnectedComponentImageFilter.html#870262f145e0b45206db74df8053b59c">ReaderType::New</a>();
<a name="l00252"></a>00252     baselineReader-&gt;SetFileName(baselineImageFilename);
<a name="l00253"></a>00253   <span class="keywordflow">try</span>
<a name="l00254"></a>00254     {
<a name="l00255"></a>00255     baselineReader-&gt;UpdateLargestPossibleRegion();
<a name="l00256"></a>00256     }
<a name="l00257"></a>00257   <span class="keywordflow">catch</span> (itk::ExceptionObject&amp; e)
<a name="l00258"></a>00258     {
<a name="l00259"></a>00259     std::cerr &lt;&lt; <span class="stringliteral">"Exception detected while reading "</span> &lt;&lt; baselineImageFilename &lt;&lt; <span class="stringliteral">" : "</span>  &lt;&lt; e.GetDescription();
<a name="l00260"></a>00260     <span class="keywordflow">return</span> 1000;
<a name="l00261"></a>00261     }
<a name="l00262"></a>00262 
<a name="l00263"></a>00263   <span class="comment">// Read the file generated by the test</span>
<a name="l00264"></a>00264   <a class="code" href="itkFEMMacro_8h.html#539cce1a3282ba59952dedcbf9cdb23f">ReaderType::Pointer</a> testReader = <a class="code" href="namespaceHardConnectedComponentImageFilter.html#870262f145e0b45206db74df8053b59c">ReaderType::New</a>();
<a name="l00265"></a>00265     testReader-&gt;SetFileName(testImageFilename);
<a name="l00266"></a>00266   <span class="keywordflow">try</span>
<a name="l00267"></a>00267     {
<a name="l00268"></a>00268     testReader-&gt;UpdateLargestPossibleRegion();
<a name="l00269"></a>00269     }
<a name="l00270"></a>00270   <span class="keywordflow">catch</span> (itk::ExceptionObject&amp; e)
<a name="l00271"></a>00271     {
<a name="l00272"></a>00272     std::cerr &lt;&lt; <span class="stringliteral">"Exception detected while reading "</span> &lt;&lt; testImageFilename &lt;&lt; <span class="stringliteral">" : "</span>  &lt;&lt; e.GetDescription() &lt;&lt; std::endl;
<a name="l00273"></a>00273     <span class="keywordflow">return</span> 1000;
<a name="l00274"></a>00274     }
<a name="l00275"></a>00275 
<a name="l00276"></a>00276   <span class="comment">// The sizes of the baseline and test image must match</span>
<a name="l00277"></a>00277   <a class="code" href="namespaceHardConnectedComponentImageFilter.html#5bf82236e1e50e653de84c8ead448599">ImageType::SizeType</a> baselineSize;
<a name="l00278"></a>00278     baselineSize = baselineReader-&gt;GetOutput()-&gt;GetLargestPossibleRegion().GetSize();
<a name="l00279"></a>00279   <a class="code" href="namespaceHardConnectedComponentImageFilter.html#5bf82236e1e50e653de84c8ead448599">ImageType::SizeType</a> testSize;
<a name="l00280"></a>00280     testSize = testReader-&gt;GetOutput()-&gt;GetLargestPossibleRegion().GetSize();
<a name="l00281"></a>00281   
<a name="l00282"></a>00282   <span class="keywordflow">if</span> (baselineSize != testSize)
<a name="l00283"></a>00283     {
<a name="l00284"></a>00284     std::cerr &lt;&lt; <span class="stringliteral">"The size of the Baseline image and Test image do not match!"</span> &lt;&lt; std::endl;
<a name="l00285"></a>00285     std::cerr &lt;&lt; <span class="stringliteral">"Baseline image: "</span> &lt;&lt; baselineImageFilename
<a name="l00286"></a>00286               &lt;&lt; <span class="stringliteral">" has size "</span> &lt;&lt; baselineSize &lt;&lt; std::endl;
<a name="l00287"></a>00287     std::cerr &lt;&lt; <span class="stringliteral">"Test image:     "</span> &lt;&lt; testImageFilename
<a name="l00288"></a>00288               &lt;&lt; <span class="stringliteral">" has size "</span> &lt;&lt; testSize &lt;&lt; std::endl;
<a name="l00289"></a>00289     <span class="keywordflow">return</span> 1;
<a name="l00290"></a>00290     }
<a name="l00291"></a>00291 
<a name="l00292"></a>00292   <span class="comment">// Now compare the two images</span>
<a name="l00293"></a>00293   <span class="keyword">typedef</span> <a class="code" href="classitk_1_1DifferenceImageFilter.html" title="Implements comparison between two images.">itk::DifferenceImageFilter&lt;ImageType,ImageType&gt;</a> DiffType;
<a name="l00294"></a>00294   <a class="code" href="itkFEMMacro_8h.html#539cce1a3282ba59952dedcbf9cdb23f">DiffType::Pointer</a> diff = <a class="code" href="namespaceHardConnectedComponentImageFilter.html#870262f145e0b45206db74df8053b59c">DiffType::New</a>();
<a name="l00295"></a>00295     diff-&gt;SetValidInput(baselineReader-&gt;GetOutput());
<a name="l00296"></a>00296     diff-&gt;SetTestInput(testReader-&gt;GetOutput());
<a name="l00297"></a>00297     diff-&gt;SetDifferenceThreshold( intensityTolerance );
<a name="l00298"></a>00298     diff-&gt;SetToleranceRadius( radiusTolerance );
<a name="l00299"></a>00299     diff-&gt;UpdateLargestPossibleRegion();
<a name="l00300"></a>00300 
<a name="l00301"></a>00301     <span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> status = 0;
<a name="l00302"></a>00302     status = diff-&gt;GetNumberOfPixelsWithDifferences();
<a name="l00303"></a>00303 
<a name="l00304"></a>00304   <span class="comment">// if there are discrepencies, create an diff image</span>
<a name="l00305"></a>00305   <span class="keywordflow">if</span> ( (status &gt; numberOfPixelsTolerance) &amp;&amp; reportErrors )
<a name="l00306"></a>00306     {
<a name="l00307"></a>00307     <span class="keyword">typedef</span> <a class="code" href="classitk_1_1RescaleIntensityImageFilter.html" title="Applies a linear transformation to the intensity levels of the input Image.">itk::RescaleIntensityImageFilter&lt;ImageType,OutputType&gt;</a> RescaleType;
<a name="l00308"></a>00308     <span class="keyword">typedef</span> <a class="code" href="classitk_1_1ExtractImageFilter.html" title="Decrease the image size by cropping the image to the selected region bounds.">itk::ExtractImageFilter&lt;OutputType,DiffOutputType&gt;</a> ExtractType;
<a name="l00309"></a>00309     <span class="keyword">typedef</span> <a class="code" href="classitk_1_1ImageFileWriter.html" title="Writes image data to a single file.">itk::ImageFileWriter&lt;DiffOutputType&gt;</a> WriterType;
<a name="l00310"></a>00310     <span class="keyword">typedef</span> <a class="code" href="classitk_1_1ImageRegion.html" title="An image region represents a structured region of data.">itk::ImageRegion&lt;ITK_TEST_DIMENSION_MAX&gt;</a> <a class="code" href="namespaceHardConnectedComponentImageFilter.html#ed8c4a40607d317c666eb96ea265e126">RegionType</a>;
<a name="l00311"></a>00311     <a class="code" href="namespaceHardConnectedComponentImageFilter.html#5bf82236e1e50e653de84c8ead448599">OutputType::SizeType</a> size; size.Fill(0);
<a name="l00312"></a>00312 
<a name="l00313"></a>00313     <a class="code" href="itkFEMMacro_8h.html#539cce1a3282ba59952dedcbf9cdb23f">RescaleType::Pointer</a> rescale = <a class="code" href="namespaceHardConnectedComponentImageFilter.html#870262f145e0b45206db74df8053b59c">RescaleType::New</a>();
<a name="l00314"></a>00314       rescale-&gt;SetOutputMinimum(itk::NumericTraits&lt;unsigned char&gt;::NonpositiveMin());
<a name="l00315"></a>00315       rescale-&gt;SetOutputMaximum(itk::NumericTraits&lt;unsigned char&gt;::max());
<a name="l00316"></a>00316       rescale-&gt;SetInput(diff-&gt;GetOutput());
<a name="l00317"></a>00317       rescale-&gt;UpdateLargestPossibleRegion();
<a name="l00318"></a>00318     size = rescale-&gt;GetOutput()-&gt;GetLargestPossibleRegion().GetSize();
<a name="l00319"></a>00319 
<a name="l00320"></a>00320     <span class="comment">//Get the center slice of the image,  In 3D, the first slice</span>
<a name="l00321"></a>00321     <span class="comment">//is often a black slice with little debugging information.</span>
<a name="l00322"></a>00322     <a class="code" href="namespaceHardConnectedComponentImageFilter.html#be32dc19e71d40322ad9828b9ab40853">OutputType::IndexType</a> index; index.Fill(0);
<a name="l00323"></a>00323     <span class="keywordflow">for</span> (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> i = 2; i &lt; <a class="code" href="itkTestMain_8h.html#5ae87fb2158f30c533661f95f07f4fae">ITK_TEST_DIMENSION_MAX</a>; i++)
<a name="l00324"></a>00324       {
<a name="l00325"></a>00325       index[i]=size[i]/2;<span class="comment">//NOTE: Integer Divide used to get approximately the center slice</span>
<a name="l00326"></a>00326       size[i] = 0;
<a name="l00327"></a>00327       }
<a name="l00328"></a>00328 
<a name="l00329"></a>00329     RegionType region;
<a name="l00330"></a>00330     region.SetIndex(index);
<a name="l00331"></a>00331 
<a name="l00332"></a>00332     region.SetSize(size);
<a name="l00333"></a>00333 
<a name="l00334"></a>00334     <a class="code" href="itkFEMMacro_8h.html#539cce1a3282ba59952dedcbf9cdb23f">ExtractType::Pointer</a> extract = <a class="code" href="namespaceHardConnectedComponentImageFilter.html#870262f145e0b45206db74df8053b59c">ExtractType::New</a>();
<a name="l00335"></a>00335       extract-&gt;SetInput(rescale-&gt;GetOutput());
<a name="l00336"></a>00336       extract-&gt;SetExtractionRegion(region);
<a name="l00337"></a>00337 
<a name="l00338"></a>00338     <a class="code" href="itkFEMMacro_8h.html#539cce1a3282ba59952dedcbf9cdb23f">WriterType::Pointer</a> writer = <a class="code" href="namespaceHardConnectedComponentImageFilter.html#870262f145e0b45206db74df8053b59c">WriterType::New</a>();
<a name="l00339"></a>00339       writer-&gt;SetInput(extract-&gt;GetOutput());
<a name="l00340"></a>00340 
<a name="l00341"></a>00341     std::cout &lt;&lt; <span class="stringliteral">"&lt;DartMeasurement name=\"ImageError\" type=\"numeric/double\"&gt;"</span>;
<a name="l00342"></a>00342     std::cout &lt;&lt; status;
<a name="l00343"></a>00343     std::cout &lt;&lt;  <span class="stringliteral">"&lt;/DartMeasurement&gt;"</span> &lt;&lt; std::endl;<a class="code" href="classitk_1_1OStringStream.html"></a>
<a name="l00344"></a>00344 <a class="code" href="classitk_1_1OStringStream.html"></a>
<a name="l00345"></a>00345 <a class="code" href="classitk_1_1OStringStream.html">    ::itk::OStringStream</a> diffName;
<a name="l00346"></a>00346       diffName &lt;&lt; testImageFilename &lt;&lt; <span class="stringliteral">".diff.png"</span>;
<a name="l00347"></a>00347     <span class="keywordflow">try</span>
<a name="l00348"></a>00348       {
<a name="l00349"></a>00349       rescale-&gt;SetInput(diff-&gt;GetOutput());
<a name="l00350"></a>00350       rescale-&gt;Update();
<a name="l00351"></a>00351       }
<a name="l00352"></a>00352     <span class="keywordflow">catch</span>(<span class="keyword">const</span> std::exception&amp; e)
<a name="l00353"></a>00353       {
<a name="l00354"></a>00354       std::cerr &lt;&lt; <span class="stringliteral">"Error during rescale of "</span> &lt;&lt; diffName.str() &lt;&lt; std::endl;
<a name="l00355"></a>00355       std::cerr &lt;&lt; e.what() &lt;&lt; <span class="stringliteral">"\n"</span>;
<a name="l00356"></a>00356       }
<a name="l00357"></a>00357     <span class="keywordflow">catch</span> (...)
<a name="l00358"></a>00358       {
<a name="l00359"></a>00359       std::cerr &lt;&lt; <span class="stringliteral">"Error during rescale of "</span> &lt;&lt; diffName.str() &lt;&lt; std::endl;
<a name="l00360"></a>00360       }
<a name="l00361"></a>00361     writer-&gt;SetFileName(diffName.str().c_str());
<a name="l00362"></a>00362     <span class="keywordflow">try</span>
<a name="l00363"></a>00363       {
<a name="l00364"></a>00364       writer-&gt;Update();
<a name="l00365"></a>00365       }
<a name="l00366"></a>00366     <span class="keywordflow">catch</span>(<span class="keyword">const</span> std::exception&amp; e)
<a name="l00367"></a>00367       {
<a name="l00368"></a>00368       std::cerr &lt;&lt; <span class="stringliteral">"Error during write of "</span> &lt;&lt; diffName.str() &lt;&lt; std::endl;
<a name="l00369"></a>00369       std::cerr &lt;&lt; e.what() &lt;&lt; <span class="stringliteral">"\n"</span>;
<a name="l00370"></a>00370       }
<a name="l00371"></a>00371     <span class="keywordflow">catch</span> (...)
<a name="l00372"></a>00372       {
<a name="l00373"></a>00373       std::cerr &lt;&lt; <span class="stringliteral">"Error during write of "</span> &lt;&lt; diffName.str() &lt;&lt; std::endl;
<a name="l00374"></a>00374       }
<a name="l00375"></a>00375 
<a name="l00376"></a>00376     std::cout &lt;&lt; <span class="stringliteral">"&lt;DartMeasurementFile name=\"DifferenceImage\" type=\"image/png\"&gt;"</span>;
<a name="l00377"></a>00377     std::cout &lt;&lt; diffName.str();
<a name="l00378"></a>00378     std::cout &lt;&lt; <span class="stringliteral">"&lt;/DartMeasurementFile&gt;"</span> &lt;&lt; std::endl;<a class="code" href="classitk_1_1OStringStream.html"></a>
<a name="l00379"></a>00379 <a class="code" href="classitk_1_1OStringStream.html"></a>
<a name="l00380"></a>00380 <a class="code" href="classitk_1_1OStringStream.html">    ::itk::OStringStream</a> baseName;
<a name="l00381"></a>00381     baseName &lt;&lt; testImageFilename &lt;&lt; <span class="stringliteral">".base.png"</span>;
<a name="l00382"></a>00382     <span class="keywordflow">try</span>
<a name="l00383"></a>00383       {
<a name="l00384"></a>00384       rescale-&gt;SetInput(baselineReader-&gt;GetOutput());
<a name="l00385"></a>00385       rescale-&gt;Update();
<a name="l00386"></a>00386       }
<a name="l00387"></a>00387     <span class="keywordflow">catch</span>(<span class="keyword">const</span> std::exception&amp; e)
<a name="l00388"></a>00388       {
<a name="l00389"></a>00389       std::cerr &lt;&lt; <span class="stringliteral">"Error during rescale of "</span> &lt;&lt; baseName.str() &lt;&lt; std::endl;
<a name="l00390"></a>00390       std::cerr &lt;&lt; e.what() &lt;&lt; <span class="stringliteral">"\n"</span>;
<a name="l00391"></a>00391       }
<a name="l00392"></a>00392     <span class="keywordflow">catch</span> (...)
<a name="l00393"></a>00393       {
<a name="l00394"></a>00394       std::cerr &lt;&lt; <span class="stringliteral">"Error during rescale of "</span> &lt;&lt; baseName.str() &lt;&lt; std::endl;
<a name="l00395"></a>00395       }
<a name="l00396"></a>00396     <span class="keywordflow">try</span>
<a name="l00397"></a>00397       {
<a name="l00398"></a>00398       writer-&gt;SetFileName(baseName.str().c_str());
<a name="l00399"></a>00399       writer-&gt;Update();
<a name="l00400"></a>00400       }
<a name="l00401"></a>00401     <span class="keywordflow">catch</span>(<span class="keyword">const</span> std::exception&amp; e)
<a name="l00402"></a>00402       {
<a name="l00403"></a>00403       std::cerr &lt;&lt; <span class="stringliteral">"Error during write of "</span> &lt;&lt; baseName.str() &lt;&lt; std::endl;
<a name="l00404"></a>00404       std::cerr &lt;&lt; e.what() &lt;&lt; <span class="stringliteral">"\n"</span>;
<a name="l00405"></a>00405       }
<a name="l00406"></a>00406     <span class="keywordflow">catch</span> (...)
<a name="l00407"></a>00407       {
<a name="l00408"></a>00408       std::cerr &lt;&lt; <span class="stringliteral">"Error during write of "</span> &lt;&lt; baseName.str() &lt;&lt; std::endl;
<a name="l00409"></a>00409       }
<a name="l00410"></a>00410 
<a name="l00411"></a>00411     std::cout &lt;&lt; <span class="stringliteral">"&lt;DartMeasurementFile name=\"BaselineImage\" type=\"image/png\"&gt;"</span>;
<a name="l00412"></a>00412     std::cout &lt;&lt; baseName.str();
<a name="l00413"></a>00413     std::cout &lt;&lt; <span class="stringliteral">"&lt;/DartMeasurementFile&gt;"</span> &lt;&lt; std::endl;<a class="code" href="classitk_1_1OStringStream.html"></a>
<a name="l00414"></a>00414 <a class="code" href="classitk_1_1OStringStream.html"></a>
<a name="l00415"></a>00415 <a class="code" href="classitk_1_1OStringStream.html">    ::itk::OStringStream</a> testName;
<a name="l00416"></a>00416     testName &lt;&lt; testImageFilename &lt;&lt; <span class="stringliteral">".test.png"</span>;
<a name="l00417"></a>00417     <span class="keywordflow">try</span>
<a name="l00418"></a>00418       {
<a name="l00419"></a>00419       rescale-&gt;SetInput(testReader-&gt;GetOutput());
<a name="l00420"></a>00420       rescale-&gt;Update();
<a name="l00421"></a>00421       }
<a name="l00422"></a>00422     <span class="keywordflow">catch</span>(<span class="keyword">const</span> std::exception&amp; e)
<a name="l00423"></a>00423       {
<a name="l00424"></a>00424       std::cerr &lt;&lt; <span class="stringliteral">"Error during rescale of "</span> &lt;&lt; testName.str() &lt;&lt; std::endl;
<a name="l00425"></a>00425       std::cerr &lt;&lt; e.what() &lt;&lt; <span class="stringliteral">"\n"</span>;
<a name="l00426"></a>00426       }
<a name="l00427"></a>00427     <span class="keywordflow">catch</span> (...)
<a name="l00428"></a>00428       {
<a name="l00429"></a>00429       std::cerr &lt;&lt; <span class="stringliteral">"Error during rescale of "</span> &lt;&lt; testName.str() &lt;&lt; std::endl;
<a name="l00430"></a>00430       }
<a name="l00431"></a>00431     <span class="keywordflow">try</span>
<a name="l00432"></a>00432       {
<a name="l00433"></a>00433       writer-&gt;SetFileName(testName.str().c_str());
<a name="l00434"></a>00434       writer-&gt;Update();
<a name="l00435"></a>00435       }
<a name="l00436"></a>00436     <span class="keywordflow">catch</span>(<span class="keyword">const</span> std::exception&amp; e)
<a name="l00437"></a>00437       {
<a name="l00438"></a>00438       std::cerr &lt;&lt; <span class="stringliteral">"Error during write of "</span> &lt;&lt; testName.str() &lt;&lt; std::endl;
<a name="l00439"></a>00439       std::cerr &lt;&lt; e.what() &lt;&lt; <span class="stringliteral">"\n"</span>;
<a name="l00440"></a>00440       }
<a name="l00441"></a>00441     <span class="keywordflow">catch</span> (...)
<a name="l00442"></a>00442       {
<a name="l00443"></a>00443       std::cerr &lt;&lt; <span class="stringliteral">"Error during write of "</span> &lt;&lt; testName.str() &lt;&lt; std::endl;
<a name="l00444"></a>00444       }
<a name="l00445"></a>00445 
<a name="l00446"></a>00446     std::cout &lt;&lt; <span class="stringliteral">"&lt;DartMeasurementFile name=\"TestImage\" type=\"image/png\"&gt;"</span>;
<a name="l00447"></a>00447     std::cout &lt;&lt; testName.str();
<a name="l00448"></a>00448     std::cout &lt;&lt; <span class="stringliteral">"&lt;/DartMeasurementFile&gt;"</span> &lt;&lt; std::endl;
<a name="l00449"></a>00449 
<a name="l00450"></a>00450 
<a name="l00451"></a>00451     }
<a name="l00452"></a>00452   <span class="keywordflow">return</span> (status &gt; numberOfPixelsTolerance) ? 1 : 0;
<a name="l00453"></a>00453 }
<a name="l00454"></a>00454 
<a name="l00455"></a>00455 <span class="comment">//</span>
<a name="l00456"></a>00456 <span class="comment">// Generate all of the possible baselines</span>
<a name="l00457"></a>00457 <span class="comment">// The possible baselines are generated fromn the baselineFilename using the following algorithm:</span>
<a name="l00458"></a>00458 <span class="comment">// 1) strip the suffix</span>
<a name="l00459"></a>00459 <span class="comment">// 2) append a digit .x</span>
<a name="l00460"></a>00460 <span class="comment">// 3) append the original suffix.</span>
<a name="l00461"></a>00461 <span class="comment">// It the file exists, increment x and continue</span>
<a name="l00462"></a>00462 <span class="comment">//</span>
<a name="l00463"></a><a class="code" href="itkTestMain_8h.html#7d92f4ecc3fe3b5ee5e4f44ebf769434">00463</a> std::map&lt;std::string,int&gt; <a class="code" href="itkTestMain_8h.html#7d92f4ecc3fe3b5ee5e4f44ebf769434">RegressionTestBaselines</a> (<span class="keywordtype">char</span> *baselineFilename)
<a name="l00464"></a>00464 {
<a name="l00465"></a>00465   std::map&lt;std::string,int&gt; baselines;
<a name="l00466"></a>00466   baselines[std::string(baselineFilename)] = 0;
<a name="l00467"></a>00467 
<a name="l00468"></a>00468   std::string originalBaseline(baselineFilename);
<a name="l00469"></a>00469 
<a name="l00470"></a>00470   <span class="keywordtype">int</span> x = 0;
<a name="l00471"></a>00471   std::string::size_type suffixPos = originalBaseline.rfind(<span class="stringliteral">"."</span>);
<a name="l00472"></a>00472   std::string suffix;
<a name="l00473"></a>00473   <span class="keywordflow">if</span> (suffixPos != std::string::npos)
<a name="l00474"></a>00474     {
<a name="l00475"></a>00475     suffix = originalBaseline.substr(suffixPos,originalBaseline.length());
<a name="l00476"></a>00476     originalBaseline.erase(suffixPos,originalBaseline.length());
<a name="l00477"></a>00477     }
<a name="l00478"></a>00478   <span class="keywordflow">while</span> (++x)
<a name="l00479"></a>00479     {<a class="code" href="classitk_1_1OStringStream.html"></a>
<a name="l00480"></a>00480 <a class="code" href="classitk_1_1OStringStream.html">    ::itk::OStringStream</a> filename;
<a name="l00481"></a>00481     filename &lt;&lt; originalBaseline &lt;&lt; <span class="stringliteral">"."</span> &lt;&lt; x &lt;&lt; suffix;
<a name="l00482"></a>00482     std::ifstream filestream(filename.str().c_str());
<a name="l00483"></a>00483     <span class="keywordflow">if</span> (!filestream)
<a name="l00484"></a>00484       {
<a name="l00485"></a>00485         <span class="keywordflow">break</span>;
<a name="l00486"></a>00486       }
<a name="l00487"></a>00487     baselines[filename.str()] = 0;
<a name="l00488"></a>00488     filestream.close();
<a name="l00489"></a>00489     }
<a name="l00490"></a>00490   <span class="keywordflow">return</span> baselines;
<a name="l00491"></a>00491 }
<a name="l00492"></a>00492 
<a name="l00493"></a>00493 <span class="comment">// Needed for explicit instantiation</span>
<a name="l00494"></a>00494 <span class="preprocessor">#include "itkDifferenceImageFilter.txx"</span>
<a name="l00495"></a>00495 
</pre></div></div>
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