itkDiscreteGaussianDerivativeImageFilter.h

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

  Program:   Insight Segmentation & Registration Toolkit
  Module:    $RCSfile: itkDiscreteGaussianDerivativeImageFilter.h,v $
  Language:  C++
  Date:      $Date: 2010-06-10 13:02:23 $
  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 __itkDiscreteGaussianDerivativeImageFilter_h
#define __itkDiscreteGaussianDerivativeImageFilter_h

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

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

  itkNewMacro(Self);

  itkTypeMacro(DiscreteGaussianDerivativeImageFilter, ImageToImageFilter);

  typedef TInputImage  InputImageType;
  typedef TOutputImage OutputImageType;

  typedef typename TOutputImage::PixelType         OutputPixelType;
  typedef typename TOutputImage::InternalPixelType OutputInternalPixelType;
  typedef typename TInputImage::PixelType          InputPixelType;
  typedef typename TInputImage::InternalPixelType  InputInternalPixelType;

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

  typedef FixedArray<double, itkGetStaticConstMacro(ImageDimension)> ArrayType;

  typedef FixedArray<unsigned int, itkGetStaticConstMacro(ImageDimension)> OrderArrayType;

  itkSetMacro(Order, OrderArrayType);
  itkGetConstMacro(Order, const OrderArrayType);

  itkSetMacro(Variance, ArrayType);
  itkGetConstMacro(Variance, const ArrayType);

  itkSetMacro(MaximumError, ArrayType);
  itkGetConstMacro(MaximumError, const ArrayType);

  itkGetConstMacro(MaximumKernelWidth, int);
  itkSetMacro(MaximumKernelWidth, int);

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

  void SetOrder (const typename OrderArrayType::ValueType v)
      {
      OrderArrayType a;
      a.Fill(v);
      this->SetOrder(a);
      }
    void SetVariance (const typename ArrayType::ValueType v)
      {
      ArrayType a;
      a.Fill(v);
      this->SetVariance(a);
      }
    void SetMaximumError (const typename ArrayType::ValueType v)
      {
      ArrayType a;
      a.Fill(v);
      this->SetMaximumError(a);
      }
  itkSetMacro(UseImageSpacing, bool);
  itkGetConstMacro(UseImageSpacing, bool);
  itkBooleanMacro(UseImageSpacing);

#ifdef ITK_USE_CONCEPT_CHECKING

  itkConceptMacro(OutputHasNumericTraitsCheck,
    (Concept::HasNumericTraits<OutputPixelType>));
#endif

protected:

  DiscreteGaussianDerivativeImageFilter()
    {
    m_Order.Fill(1);
    m_Variance.Fill(0.0);
    m_MaximumError.Fill(0.01);
    m_MaximumKernelWidth = 32;
    m_UseImageSpacing = true;
    m_InternalNumberOfStreamDivisions = ImageDimension*ImageDimension;
    }
  virtual ~DiscreteGaussianDerivativeImageFilter() {}
  void PrintSelf(std::ostream& os, Indent indent) const;

  virtual void GenerateInputRequestedRegion() throw(InvalidRequestedRegionError);

  void GenerateData();

private:

  DiscreteGaussianDerivativeImageFilter(const Self&); //purposely not implemented
  void operator=(const Self&); //purposely not implemented

  OrderArrayType m_Order;

  ArrayType m_Variance;

  ArrayType m_MaximumError;

  int m_MaximumKernelWidth;

  bool m_UseImageSpacing;
  
  unsigned int m_InternalNumberOfStreamDivisions;
};

} // end namespace itk

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

#endif