ITK  4.1.0
Insight Segmentation and Registration Toolkit
itkComplexToPhaseImageAdaptor.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 __itkComplexToPhaseImageAdaptor_h
00019 #define __itkComplexToPhaseImageAdaptor_h
00020 
00021 #include "itkImageAdaptor.h"
00022 #include <complex>
00023 
00024 namespace itk
00025 {
00026 namespace Accessor
00027 {
00040 template< class TInternalType, class TExternalType >
00041 class ITK_EXPORT ComplexToPhasePixelAccessor
00042 {
00043 public:
00046   typedef TExternalType ExternalType;
00047 
00050   typedef TInternalType InternalType;
00051 
00052   static inline void Set(TInternalType & output, const TExternalType & input)
00053   { output = (TInternalType)( input ); }
00054 
00055   static inline TExternalType Get(const TInternalType & input)
00056   { return (TExternalType)( vcl_atan2( input.imag(), input.real() ) ); }
00057 };
00058 } // end namespace Accessor
00059 
00069 template< class TImage, class TOutputPixelType >
00070 class ITK_EXPORT ComplexToPhaseImageAdaptor:public
00071   ImageAdaptor< TImage,
00072                 Accessor::ComplexToPhasePixelAccessor<
00073                   typename TImage::PixelType,
00074                   TOutputPixelType >   >
00075 {
00076 public:
00078   typedef ComplexToPhaseImageAdaptor Self;
00079   typedef ImageAdaptor< TImage, Accessor::ComplexToPhasePixelAccessor<
00080                           typename TImage::PixelType,
00081                           TOutputPixelType > >  Superclass;
00082   typedef SmartPointer< Self >       Pointer;
00083   typedef SmartPointer< const Self > ConstPointer;
00084 
00086   itkNewMacro(Self);
00087 
00089   itkTypeMacro(ComplexToPhaseImageAdaptor, ImageAdaptor);
00090 protected:
00091   ComplexToPhaseImageAdaptor() {}
00092   virtual ~ComplexToPhaseImageAdaptor() {}
00093 private:
00094   ComplexToPhaseImageAdaptor(const Self &); //purposely not implemented
00095   void operator=(const Self &);             //purposely not implemented
00096 };
00097 } // end namespace itk
00099 
00100 #endif
00101