ITK  4.1.0
Insight Segmentation and Registration Toolkit
itkRGBToLuminanceImageAdaptor.h
Go to the documentation of this file.
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 __itkRGBToLuminanceImageAdaptor_h
00019 #define __itkRGBToLuminanceImageAdaptor_h
00020 
00021 #include "itkImageAdaptor.h"
00022 #include "vnl/vnl_math.h"
00023 
00024 namespace itk
00025 {
00026 namespace Accessor
00027 {
00040 template< class TInternalType, class TExternalType >
00041 class ITK_EXPORT RGBToLuminancePixelAccessor
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 = static_cast< TInternalType >( input.GetLuminance() ); }
00054 
00055   static inline TExternalType Get(const TInternalType & input)
00056   { return static_cast< TExternalType >( input.GetLuminance() ); }
00057 };
00058 } // end namespace Accessor
00059 
00070 template< class TImage, class TOutputPixelType >
00071 class ITK_EXPORT RGBToLuminanceImageAdaptor:public
00072   ImageAdaptor< TImage,
00073                 Accessor::RGBToLuminancePixelAccessor<
00074                   typename TImage::PixelType,
00075                   TOutputPixelType >   >
00076 {
00077 public:
00079   typedef RGBToLuminanceImageAdaptor Self;
00080   typedef ImageAdaptor< TImage, Accessor::RGBToLuminancePixelAccessor<
00081                           typename TImage::PixelType,
00082                           TOutputPixelType > >  Superclass;
00083   typedef SmartPointer< Self >       Pointer;
00084   typedef SmartPointer< const Self > ConstPointer;
00085 
00087   itkNewMacro(Self);
00088 
00090   itkTypeMacro(RGBToLuminanceImageAdaptor, ImageAdaptor);
00091 protected:
00092   RGBToLuminanceImageAdaptor() {}
00093   virtual ~RGBToLuminanceImageAdaptor() {}
00094 private:
00095   RGBToLuminanceImageAdaptor(const Self &); //purposely not implemented
00096   void operator=(const Self &);             //purposely not implemented
00097 };
00098 } // end namespace itk
00100 
00101 #endif
00102