itkLaplacianImageFilter.h

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

  Program:   Insight Segmentation & Registration Toolkit
  Module:    $RCSfile: itkLaplacianImageFilter.h,v $
  Language:  C++
  Date:      $Date: 2009-04-25 12:27:28 $
  Version:   $Revision: 1.15 $

  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 __itkLaplacianImageFilter_h
#define __itkLaplacianImageFilter_h

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

namespace itk
{
template <class TInputImage, class TOutputImage>
class ITK_EXPORT LaplacianImageFilter : 
    public ImageToImageFilter< TInputImage, TOutputImage > 
{
public:

  typedef LaplacianImageFilter                            Self;
  typedef ImageToImageFilter< TInputImage, TOutputImage > Superclass;

  typedef typename TOutputImage::PixelType         OutputPixelType;
  typedef typename TOutputImage::InternalPixelType OutputInternalPixelType;
  typedef typename TInputImage::PixelType          InputPixelType;
  typedef typename TInputImage::InternalPixelType  InputInternalPixelType;
  itkStaticConstMacro(InputImageDimension, unsigned int,
                      TInputImage::ImageDimension);
  itkStaticConstMacro(ImageDimension, unsigned int,
                      TOutputImage::ImageDimension);

  typedef TInputImage                      InputImageType;
  typedef TOutputImage                     OutputImageType;
  typedef typename InputImageType::Pointer InputImagePointer;

  typedef SmartPointer<Self>        Pointer;
  typedef SmartPointer<const Self>  ConstPointer;

  itkTypeMacro(LaplacianImageFilter, ImageToImageFilter);

  itkNewMacro(Self);

  virtual void GenerateInputRequestedRegion() throw(InvalidRequestedRegionError);

  void SetUseImageSpacingOn()
    { this->SetUseImageSpacing(true); }

  void SetUseImageSpacingOff()
    { this->SetUseImageSpacing(false); }

  itkSetMacro(UseImageSpacing, bool);
  itkGetConstMacro(UseImageSpacing, bool);

#ifdef ITK_USE_CONCEPT_CHECKING

  itkConceptMacro(SameDimensionCheck,
    (Concept::SameDimension<InputImageDimension, ImageDimension>));
  itkConceptMacro(InputPixelTypeIsFloatingPointCheck,
    (Concept::IsFloatingPoint<InputPixelType>));
  itkConceptMacro(OutputPixelTypeIsFloatingPointCheck,
    (Concept::IsFloatingPoint<OutputPixelType>));

#endif

protected:
  LaplacianImageFilter()
    {
    m_UseImageSpacing = true;
    }
  virtual ~LaplacianImageFilter()  {}

  void GenerateData();
  void PrintSelf(std::ostream&, Indent) const;

private:
  LaplacianImageFilter(const Self&); //purposely not implemented
  void operator=(const Self&); //purposely not implemented
  bool m_UseImageSpacing;
  
};
  
} // end namespace itk

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

#endif

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