ITK  4.1.0
Insight Segmentation and Registration Toolkit
itkSymmetricSigmoidTransferFunction.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 __itkSymmetricSigmoidTransferFunction_h
00019 #define __itkSymmetricSigmoidTransferFunction_h
00020 
00021 #include "itkTransferFunctionBase.h"
00022 
00023 namespace itk
00024 {
00025 namespace Statistics
00026 {
00033 template<class ScalarType>
00034 class SymmetricSigmoidTransferFunction : public TransferFunctionBase<ScalarType>
00035 {
00036 public:
00037 
00039   typedef SymmetricSigmoidTransferFunction Self;
00040   typedef TransferFunctionBase<ScalarType> Superclass;
00041   typedef SmartPointer<Self>               Pointer;
00042   typedef SmartPointer<const Self>         ConstPointer;
00043 
00045   itkTypeMacro(SymmetricSigmoidTransferFunction, TransferFunctionBase);
00046 
00048   itkNewMacro(Self);
00049 
00051   virtual ScalarType Evaluate(const ScalarType& input) const;
00052 
00054   virtual ScalarType EvaluateDerivative(const ScalarType& input) const;
00055 
00056 protected:
00057 
00058   SymmetricSigmoidTransferFunction();
00059   virtual ~SymmetricSigmoidTransferFunction();
00060 
00061   ScalarType m_Range;
00062   ScalarType m_Offset;
00063 
00065   virtual void PrintSelf( std::ostream& os, Indent indent ) const;
00066 };
00067 
00068 } // end namespace Statistics
00069 } // end namespace itk
00070 
00071 #ifndef ITK_MANUAL_INSTANTIATION
00072   #include "itkSymmetricSigmoidTransferFunction.hxx"
00073 #endif
00074 
00075 
00076 #endif
00077