itkDifferenceOfGaussiansGradientImageFilter.h

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

  Program:   Insight Segmentation & Registration Toolkit
  Module:    $RCSfile: itkDifferenceOfGaussiansGradientImageFilter.h,v $
  Language:  C++
  Date:      $Date: 2009-04-25 12:27:21 $
  Version:   $Revision: 1.24 $

  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 __itkDifferenceOfGaussiansGradientImageFilter_h
#define __itkDifferenceOfGaussiansGradientImageFilter_h

#include "itkImageToImageFilter.h"
#include "itkImage.h"
#include "itkCovariantVector.h"

namespace itk
{

template<typename TInputImage, typename TDataType>
class ITK_EXPORT DifferenceOfGaussiansGradientImageFilter :
    public ImageToImageFilter<TInputImage,
                              Image< CovariantVector<TDataType, ::itk::GetImageDimension<TInputImage>::ImageDimension>, 
                                     ::itk::GetImageDimension<TInputImage>::ImageDimension> >
{
public:
  itkStaticConstMacro(NDimensions, unsigned int, TInputImage::ImageDimension);

  typedef DifferenceOfGaussiansGradientImageFilter Self;

  typedef Image<CovariantVector<TDataType, itkGetStaticConstMacro(NDimensions)>, itkGetStaticConstMacro(NDimensions)>
  TOutputImage;

  typedef ImageToImageFilter<TInputImage, TOutputImage>  Superclass;
  typedef SmartPointer<Self>                             Pointer;
  typedef SmartPointer<const Self>                       ConstPointer;

  itkNewMacro(Self);  

  itkTypeMacro( DifferenceOfGaussiansGradientImageFilter, ImageToImageFilter );

  typedef Size<itkGetStaticConstMacro(NDimensions)> SizeType;

  typedef typename TInputImage::IndexType IndexType;

  typedef typename TInputImage::PixelType PixelType;

  typedef typename TInputImage::RegionType OutputImageRegionType;

  itkGetConstMacro(Width, unsigned int);
  itkSetMacro(Width, unsigned int);

#ifdef ITK_USE_CONCEPT_CHECKING

  itkConceptMacro(DataTypeHasNumericTraitsCheck,
    (Concept::HasNumericTraits<TDataType>));

#endif

protected:
  DifferenceOfGaussiansGradientImageFilter();
  virtual ~DifferenceOfGaussiansGradientImageFilter() {};
  void PrintSelf(std::ostream& os, Indent indent) const;

  void GenerateData();

private:
  DifferenceOfGaussiansGradientImageFilter(const Self&); //purposely not implemented
  void operator=(const Self&); //purposely not implemented

  unsigned int m_Width;

};

} // end namespace itk

#ifndef ITK_MANUAL_INSTANTIATION
#include "itkDifferenceOfGaussiansGradientImageFilter.txx"
#endif

#endif