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<h1>VNLIterativeSparseSolverTraits.h</h1><a href="VNLIterativeSparseSolverTraits_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: VNLIterativeSparseSolverTraits.h,v $</span>
<a name="l00005"></a>00005 <span class="comment"> Language: C++</span>
<a name="l00006"></a>00006 <span class="comment"> Date: $Date: 2008-10-04 12:30:27 $</span>
<a name="l00007"></a>00007 <span class="comment"> Version: $Revision: 1.2 $</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
<a name="l00018"></a>00018 <span class="preprocessor">#ifndef __VNLIterativeSparseSolverTraits_h</span>
<a name="l00019"></a>00019 <span class="preprocessor"></span><span class="preprocessor">#define __VNLIterativeSparseSolverTraits_h</span>
<a name="l00020"></a>00020 <span class="preprocessor"></span>
<a name="l00021"></a>00021 <span class="preprocessor">#include <vnl/vnl_vector.h></span>
<a name="l00022"></a>00022 <span class="preprocessor">#include <vnl/vnl_sparse_matrix.h></span>
<a name="l00023"></a>00023 <span class="preprocessor">#include <vnl/vnl_sparse_matrix_linear_system.h></span>
<a name="l00024"></a>00024 <span class="preprocessor">#include <vnl/algo/vnl_lsqr.h></span>
<a name="l00025"></a>00025
<a name="l00026"></a>00026 <span class="keyword">template</span>< <span class="keyword">typename</span> T = <span class="keywordtype">double</span> >
<a name="l00027"></a><a class="code" href="classVNLIterativeSparseSolverTraits.html">00027</a> <span class="keyword">class </span><a class="code" href="classVNLIterativeSparseSolverTraits.html">VNLIterativeSparseSolverTraits</a>
<a name="l00028"></a>00028 {
<a name="l00029"></a>00029 <span class="keyword">public</span>:
<a name="l00030"></a><a class="code" href="classVNLIterativeSparseSolverTraits.html#1a8644e3ee0347c25f148ab633b3b0e5">00030</a> <span class="keyword">typedef</span> T <a class="code" href="classVNLIterativeSparseSolverTraits.html#1a8644e3ee0347c25f148ab633b3b0e5">ValueType</a>;
<a name="l00031"></a><a class="code" href="classVNLIterativeSparseSolverTraits.html#3c0ec44cb3f5330474f2f2f4b31d8249">00031</a> <span class="keyword">typedef</span> vnl_sparse_matrix< ValueType > <a class="code" href="classVNLIterativeSparseSolverTraits.html#3c0ec44cb3f5330474f2f2f4b31d8249">MatrixType</a>;
<a name="l00032"></a><a class="code" href="classVNLIterativeSparseSolverTraits.html#9d2594225e029cc21c390183bf1ed0f1">00032</a> <span class="keyword">typedef</span> <a class="code" href="classvnl__vector.html">vnl_vector< ValueType ></a> <a class="code" href="classvnl__vector.html">VectorType</a>;
<a name="l00033"></a><a class="code" href="classVNLIterativeSparseSolverTraits.html#6d1f917a3400318a2da9209c5c8bc51d">00033</a> <span class="keyword">typedef</span> vnl_lsqr <a class="code" href="classVNLIterativeSparseSolverTraits.html#6d1f917a3400318a2da9209c5c8bc51d">SolverType</a>;
<a name="l00034"></a>00034
<a name="l00035"></a><a class="code" href="classVNLIterativeSparseSolverTraits.html#618af738da7ea52b5ce37405fa274c35">00035</a> <a class="code" href="classVNLIterativeSparseSolverTraits.html#618af738da7ea52b5ce37405fa274c35">VNLIterativeSparseSolverTraits</a>() {}
<a name="l00036"></a><a class="code" href="classVNLIterativeSparseSolverTraits.html#05a910786f02e4c2c89a8dc54dadbfee">00036</a> <a class="code" href="classVNLIterativeSparseSolverTraits.html#05a910786f02e4c2c89a8dc54dadbfee">~VNLIterativeSparseSolverTraits</a>() {}
<a name="l00037"></a>00037
<a name="l00038"></a><a class="code" href="classVNLIterativeSparseSolverTraits.html#aa5fbe7ee4b8de452241fea4d66cdb69">00038</a> <span class="keywordtype">bool</span> <a class="code" href="classVNLIterativeSparseSolverTraits.html#aa5fbe7ee4b8de452241fea4d66cdb69">IsDirectSolver</a>()<span class="keyword"> const</span>
<a name="l00039"></a>00039 <span class="keyword"> </span>{
<a name="l00040"></a>00040 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00041"></a>00041 }
<a name="l00042"></a>00042
<a name="l00043"></a><a class="code" href="classVNLIterativeSparseSolverTraits.html#2e9cd1bb445d3598a4da9c56c9aa8892">00043</a> <a class="code" href="classVNLIterativeSparseSolverTraits.html#3c0ec44cb3f5330474f2f2f4b31d8249">MatrixType</a> <a class="code" href="classVNLIterativeSparseSolverTraits.html#2e9cd1bb445d3598a4da9c56c9aa8892">InitializeSparseMatrix</a>( <span class="keyword">const</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span>& iN )<span class="keyword"> const</span>
<a name="l00044"></a>00044 <span class="keyword"> </span>{
<a name="l00045"></a>00045 <span class="keywordflow">return</span> <a class="code" href="classVNLIterativeSparseSolverTraits.html#3c0ec44cb3f5330474f2f2f4b31d8249">MatrixType</a>( iN, iN );
<a name="l00046"></a>00046 }
<a name="l00047"></a>00047
<a name="l00048"></a><a class="code" href="classVNLIterativeSparseSolverTraits.html#4754726aa2f27321a85a373ef8c7e4c3">00048</a> <a class="code" href="classvnl__vector.html">VectorType</a> <a class="code" href="classVNLIterativeSparseSolverTraits.html#4754726aa2f27321a85a373ef8c7e4c3">InitializeVector</a>( <span class="keyword">const</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span>& iN )<span class="keyword"> const</span>
<a name="l00049"></a>00049 <span class="keyword"> </span>{
<a name="l00050"></a>00050 <span class="keywordflow">return</span> <a class="code" href="classVNLIterativeSparseSolverTraits.html#9d2594225e029cc21c390183bf1ed0f1">VectorType</a>( iN );
<a name="l00051"></a>00051 }
<a name="l00052"></a>00052
<a name="l00053"></a><a class="code" href="classVNLIterativeSparseSolverTraits.html#0c509b47c25c0deae0d174e7cb9009ef">00053</a> <span class="keywordtype">void</span> <a class="code" href="classVNLIterativeSparseSolverTraits.html#0c509b47c25c0deae0d174e7cb9009ef">FillMatrix</a>( <a class="code" href="classVNLIterativeSparseSolverTraits.html#3c0ec44cb3f5330474f2f2f4b31d8249">MatrixType</a>& iA, <span class="keyword">const</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span>& iR, <span class="keyword">const</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span>& iC, <span class="keyword">const</span> <a class="code" href="classVNLIterativeSparseSolverTraits.html#1a8644e3ee0347c25f148ab633b3b0e5">ValueType</a>& iV )<span class="keyword"> const</span>
<a name="l00054"></a>00054 <span class="keyword"> </span>{
<a name="l00055"></a>00055 iA( iR, iC ) = iV;
<a name="l00056"></a>00056 }
<a name="l00057"></a>00057
<a name="l00058"></a><a class="code" href="classVNLIterativeSparseSolverTraits.html#62b3e98553dbba3ccd8aaf36c4646c03">00058</a> <span class="keywordtype">void</span> <a class="code" href="classVNLIterativeSparseSolverTraits.html#62b3e98553dbba3ccd8aaf36c4646c03">AddToMatrix</a>( <a class="code" href="classVNLIterativeSparseSolverTraits.html#3c0ec44cb3f5330474f2f2f4b31d8249">MatrixType</a>& iA, <span class="keyword">const</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span>& iR, <span class="keyword">const</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span>& iC, <span class="keyword">const</span> <a class="code" href="classVNLIterativeSparseSolverTraits.html#1a8644e3ee0347c25f148ab633b3b0e5">ValueType</a>& iV )<span class="keyword"> const</span>
<a name="l00059"></a>00059 <span class="keyword"> </span>{
<a name="l00060"></a>00060 iA( iR, iC ) += iV;
<a name="l00061"></a>00061 }
<a name="l00062"></a>00062
<a name="l00063"></a><a class="code" href="classVNLIterativeSparseSolverTraits.html#78267420c92f4c4f564a9ab7b1e98332">00063</a> <span class="keywordtype">bool</span> <a class="code" href="classVNLIterativeSparseSolverTraits.html#78267420c92f4c4f564a9ab7b1e98332">Solve</a>( <span class="keyword">const</span> <a class="code" href="classVNLIterativeSparseSolverTraits.html#3c0ec44cb3f5330474f2f2f4b31d8249">MatrixType</a>& iA, <span class="keyword">const</span> <a class="code" href="classvnl__vector.html">VectorType</a>& iB, <a class="code" href="classvnl__vector.html">VectorType</a>& oX )<span class="keyword"> const</span>
<a name="l00064"></a>00064 <span class="keyword"> </span>{
<a name="l00065"></a>00065 <span class="keyword">typedef</span> vnl_sparse_matrix_linear_system< ValueType > SparseLinearSystemType;
<a name="l00066"></a>00066 SparseLinearSystemType system( iA, iB );
<a name="l00067"></a>00067
<a name="l00068"></a>00068 <a class="code" href="classVNLIterativeSparseSolverTraits.html#6d1f917a3400318a2da9209c5c8bc51d">SolverType</a> solver( system );
<a name="l00069"></a>00069 <span class="keywordflow">return</span> solver.minimize( oX );
<a name="l00070"></a>00070 }
<a name="l00071"></a>00071
<a name="l00072"></a>00072 <span class="comment">// no interest to use this method...</span>
<a name="l00073"></a><a class="code" href="classVNLIterativeSparseSolverTraits.html#bf659573162a4412e59b122930049f3d">00073</a> <span class="keywordtype">bool</span> <a class="code" href="classVNLIterativeSparseSolverTraits.html#78267420c92f4c4f564a9ab7b1e98332">Solve</a>( <span class="keyword">const</span> <a class="code" href="classVNLIterativeSparseSolverTraits.html#3c0ec44cb3f5330474f2f2f4b31d8249">MatrixType</a>& iA,
<a name="l00074"></a>00074 <span class="keyword">const</span> <a class="code" href="classvnl__vector.html">VectorType</a>& iBx, <span class="keyword">const</span> <a class="code" href="classvnl__vector.html">VectorType</a>& iBy,
<a name="l00075"></a>00075 <a class="code" href="classvnl__vector.html">VectorType</a>& oX, <a class="code" href="classvnl__vector.html">VectorType</a>& oY )<span class="keyword"> const</span>
<a name="l00076"></a>00076 <span class="keyword"> </span>{
<a name="l00077"></a>00077 <span class="keywordtype">bool</span> result1 = <a class="code" href="classVNLIterativeSparseSolverTraits.html#78267420c92f4c4f564a9ab7b1e98332">Solve</a>( iA, iBx, oX );
<a name="l00078"></a>00078 <span class="keywordtype">bool</span> result2 = <a class="code" href="classVNLIterativeSparseSolverTraits.html#78267420c92f4c4f564a9ab7b1e98332">Solve</a>( iA, iBy, oY );
<a name="l00079"></a>00079 <span class="keywordflow">return</span>( result1 && result2 );
<a name="l00080"></a>00080 }
<a name="l00081"></a>00081
<a name="l00082"></a><a class="code" href="classVNLIterativeSparseSolverTraits.html#3fe0285ba8c91107cdff5cfa90c6bae0">00082</a> <span class="keywordtype">bool</span> <a class="code" href="classVNLIterativeSparseSolverTraits.html#78267420c92f4c4f564a9ab7b1e98332">Solve</a>( <span class="keyword">const</span> <a class="code" href="classVNLIterativeSparseSolverTraits.html#3c0ec44cb3f5330474f2f2f4b31d8249">MatrixType</a>& iA,
<a name="l00083"></a>00083 <span class="keyword">const</span> <a class="code" href="classvnl__vector.html">VectorType</a>& iB,
<a name="l00084"></a>00084 <span class="keyword">const</span> <span class="keywordtype">long</span>& iNbIter,
<a name="l00085"></a>00085 <a class="code" href="classvnl__vector.html">VectorType</a>& oX )<span class="keyword"> const</span>
<a name="l00086"></a>00086 <span class="keyword"> </span>{
<a name="l00087"></a>00087 <span class="keyword">typedef</span> vnl_sparse_matrix_linear_system< ValueType > SparseLinearSystemType;
<a name="l00088"></a>00088 SparseLinearSystemType system( iA, iB );
<a name="l00089"></a>00089
<a name="l00090"></a>00090 <a class="code" href="classVNLIterativeSparseSolverTraits.html#6d1f917a3400318a2da9209c5c8bc51d">SolverType</a> solver( system );
<a name="l00091"></a>00091 solver.set_max_iterations( iNbIter );
<a name="l00092"></a>00092 <span class="keywordflow">return</span> solver.minimize( oX );
<a name="l00093"></a>00093 }
<a name="l00094"></a>00094
<a name="l00095"></a>00095 };
<a name="l00096"></a>00096
<a name="l00097"></a>00097 <span class="preprocessor">#endif</span>
<a name="l00098"></a>00098 <span class="preprocessor"></span>
</pre></div></div>
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