itkShiftScaleImageFilter.h

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/*=========================================================================

  Program:   Insight Segmentation & Registration Toolkit
  Module:    $RCSfile: itkShiftScaleImageFilter.h,v $
  Language:  C++
  Date:      $Date: 2008-10-17 20:49:55 $
  Version:   $Revision: 1.8 $

  Copyright (c) Insight Software Consortium. All rights reserved.
  See ITKCopyright.txt or http://www.itk.org/HTML/Copyright.htm for details.

     This software is distributed WITHOUT ANY WARRANTY; without even 
     the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR 
     PURPOSE.  See the above copyright notices for more information.

=========================================================================*/
#ifndef __itkShiftScaleImageFilter_h
#define __itkShiftScaleImageFilter_h

#include "itkImageToImageFilter.h"
#include "itkArray.h"

namespace itk
{

template <class TInputImage, class TOutputImage>
class ITK_EXPORT ShiftScaleImageFilter:
    public ImageToImageFilter<TInputImage,TOutputImage>
{
public:
  typedef ShiftScaleImageFilter                         Self;
  typedef ImageToImageFilter<TInputImage,TOutputImage>  Superclass;
  typedef SmartPointer<Self>                            Pointer;
  typedef SmartPointer<const Self>                      ConstPointer;

  itkNewMacro(Self);  

  typedef typename TInputImage::RegionType  InputImageRegionType;
  typedef typename TOutputImage::RegionType OutputImageRegionType;

  typedef typename TInputImage::Pointer  InputImagePointer;
  typedef typename TOutputImage::Pointer OutputImagePointer;

  typedef typename TInputImage::PixelType  InputImagePixelType;
  typedef typename TOutputImage::PixelType OutputImagePixelType;

  typedef typename TInputImage::IndexType   InputImageIndexType;
  typedef typename TInputImage::SizeType    InputImageSizeType;
  typedef typename TInputImage::OffsetType  InputImageOffsetType;
  typedef typename TOutputImage::IndexType  OutputImageIndexType;
  typedef typename TOutputImage::SizeType   OutputImageSizeType;
  typedef typename TOutputImage::OffsetType OutputImageOffsetType;

  typedef typename NumericTraits<OutputImagePixelType>::RealType RealType;

  itkStaticConstMacro(ImageDimension, unsigned int,
                      TInputImage::ImageDimension );

  itkTypeMacro(ShiftScaleImageFilter, ImageToImageFilter);

  itkSetMacro(Shift,RealType);
  itkGetMacro(Shift,RealType);

  itkSetMacro(Scale,RealType);
  itkGetMacro(Scale,RealType);

  itkGetMacro(UnderflowCount,long);
  itkGetMacro(OverflowCount,long);

#ifdef ITK_USE_CONCEPT_CHECKING

  itkConceptMacro(OutputHasNumericTraitsCheck,
                  (Concept::HasNumericTraits<OutputImagePixelType>));
  itkConceptMacro(InputPlusRealTypeCheck,
                  (Concept::AdditiveOperators<InputImagePixelType, RealType, RealType>));
  itkConceptMacro(RealTypeMultiplyOperatorCheck,
                  (Concept::MultiplyOperator<RealType>));

#endif

protected:
  ShiftScaleImageFilter();
  ~ShiftScaleImageFilter();
  void PrintSelf(std::ostream& os, Indent indent) const;

  void BeforeThreadedGenerateData ();

  void AfterThreadedGenerateData ();

  void  ThreadedGenerateData (const OutputImageRegionType& 
                              outputRegionForThread,
                              int threadId);
private:
  ShiftScaleImageFilter(const Self&); //purposely not implemented
  void operator=(const Self&); //purposely not implemented

  RealType m_Shift;
  RealType m_Scale;

  long m_UnderflowCount;
  long m_OverflowCount;

  Array<long> m_ThreadUnderflow;
  Array<long> m_ThreadOverflow;
};

  
} // end namespace itk
  
#ifndef ITK_MANUAL_INSTANTIATION
#include "itkShiftScaleImageFilter.txx"
#endif
  
#endif

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