ITK  4.0.0
Insight Segmentation and Registration Toolkit
itkSquaredDifferenceErrorFunction.h
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00001 /*=========================================================================
00002  *
00003  *  Copyright Insight Software Consortium
00004  *
00005  *  Licensed under the Apache License, Version 2.0 (the "License");
00006  *  you may not use this file except in compliance with the License.
00007  *  You may obtain a copy of the License at
00008  *
00009  *         http://www.apache.org/licenses/LICENSE-2.0.txt
00010  *
00011  *  Unless required by applicable law or agreed to in writing, software
00012  *  distributed under the License is distributed on an "AS IS" BASIS,
00013  *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
00014  *  See the License for the specific language governing permissions and
00015  *  limitations under the License.
00016  *
00017  *=========================================================================*/
00018 #ifndef __itkSquaredDifferenceErrorFunction_h
00019 #define __itkSquaredDifferenceErrorFunction_h
00020 
00021 #include "itkErrorFunctionBase.h"
00022 #include "vnl/vnl_matrix.h"
00023 #include "vnl/vnl_vector.h"
00024 
00025 namespace itk
00026 {
00027 namespace Statistics
00028 {
00035 template<class TMeasurementVector, class ScalarType>
00036 class SquaredDifferenceErrorFunction : public ErrorFunctionBase<TMeasurementVector, ScalarType>
00037 {
00038 public:
00039 
00041   typedef SquaredDifferenceErrorFunction                    Self;
00042   typedef ErrorFunctionBase<TMeasurementVector, ScalarType> Superclass;
00043   typedef SmartPointer<Self>                                Pointer;
00044   typedef SmartPointer<const Self>                          ConstPointer;
00045 
00046   typedef typename Superclass::ErrorVectorType    ErrorVectorType;
00047   typedef typename Superclass::InternalVectorType InternalVectorType;
00048 
00050   itkTypeMacro(SquaredDifferenceErrorFunction, FunctionBase);
00051 
00053   itkNewMacro(Self);
00054 
00056   virtual ScalarType Evaluate(const TMeasurementVector& Errors) const;
00057 
00058   virtual InternalVectorType EvaluateDerivative(const TMeasurementVector& Errors) const;
00059 
00060 protected:
00061 
00062   SquaredDifferenceErrorFunction();
00063   virtual ~SquaredDifferenceErrorFunction();
00064 
00066   virtual void PrintSelf( std::ostream& os, Indent indent ) const;
00067 };
00068 
00069 } // end namespace Statistics
00070 } // end namespace itk
00071 
00072 #ifndef ITK_MANUAL_INSTANTIATION
00073   #include "itkSquaredDifferenceErrorFunction.hxx"
00074 #endif
00075 
00076 
00077 #endif
00078