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/*=========================================================================
Program: Insight Segmentation & Registration Toolkit
Module: $RCSfile: itkNeighborhoodOperatorImageFilter.h,v $
Language: C++
Date: $Date: 2006-03-31 14:31:04 $
Version: $Revision: 1.33 $
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 __itkNeighborhoodOperatorImageFilter_h
#define __itkNeighborhoodOperatorImageFilter_h
#include "itkImageToImageFilter.h"
#include "itkNeighborhoodOperator.h"
#include "itkImage.h"
#include "itkImageBoundaryCondition.h"
#include "itkZeroFluxNeumannBoundaryCondition.h"
namespace itk
{
/** \class NeighborhoodOperatorImageFilter
* \brief Applies a single NeighborhoodOperator to an image region.
*
* This filter calculates successive inner products between a single
* NeighborhoodOperator and a NeighborhoodIterator, which is swept
* across every pixel in an image region. For operators that are
* symmetric across their axes, the result is a fast convolution
* with the image region. Apply the mirror()'d operator for
* non-symmetric NeighborhoodOperators.
*
* \ingroup ImageFilters
*
* \sa Image
* \sa Neighborhood
* \sa NeighborhoodOperator
* \sa NeighborhoodIterator
*/
template <class TInputImage, class TOutputImage, class TOperatorValueType=ITK_TYPENAME TOutputImage::PixelType>
class ITK_EXPORT NeighborhoodOperatorImageFilter :
public ImageToImageFilter< TInputImage, TOutputImage >
{
public:
/** Standard "Self" & Superclass typedef. */
typedef NeighborhoodOperatorImageFilter Self;
typedef ImageToImageFilter< TInputImage, TOutputImage > Superclass;
typedef SmartPointer<Self> Pointer;
typedef SmartPointer<const Self> ConstPointer;
/** Method for creation through the object factory. */
itkNewMacro(Self);
/** Run-time type information (and related methods). */
itkTypeMacro(NeighborhoodOperatorImageFilter, ImageToImageFilter);
/** Extract some information from the image types. Dimensionality
* of the two images is assumed to be the same. */
typedef typename TOutputImage::PixelType OutputPixelType;
typedef typename TOutputImage::InternalPixelType OutputInternalPixelType;
typedef typename TInputImage::PixelType InputPixelType;
typedef typename TInputImage::InternalPixelType InputInternalPixelType;
typedef TOperatorValueType OperatorValueType;
/** Extract some information from the image types. Dimensionality
* of the two images is assumed to be the same. */
itkStaticConstMacro(ImageDimension, unsigned int,
TOutputImage::ImageDimension);
itkStaticConstMacro(InputImageDimension, unsigned int,
TInputImage::ImageDimension);
/** Image typedef support. */
typedef TInputImage InputImageType;
typedef TOutputImage OutputImageType;
typedef typename InputImageType::Pointer InputImagePointer;
/** Typedef for generic boundary condition pointer. */
typedef ImageBoundaryCondition<InputImageType> *
ImageBoundaryConditionPointerType;
/** Typedef for the default boundary condition */
typedef ZeroFluxNeumannBoundaryCondition<InputImageType> DefaultBoundaryCondition;
/** Superclass typedefs. */
typedef typename Superclass::OutputImageRegionType OutputImageRegionType;
/** Neighborhood types */
typedef Neighborhood<OperatorValueType,
itkGetStaticConstMacro(ImageDimension)> OutputNeighborhoodType;
/** Sets the operator that is used to filter the image. Note
* that the operator is stored as an internal COPY (it
* is not part of the pipeline). */
void SetOperator(const OutputNeighborhoodType &p)
{
m_Operator = p;
this->Modified();
}
/** Get the operator that is used to filter the image. */
const OutputNeighborhoodType& GetOperator() const
{ return m_Operator; }
/** Allows a user to override the internal boundary condition. Care should be
* be taken to ensure that the overriding boundary condition is a persistent
* object during the time it is referenced. The overriding condition
* can be of a different type than the default type as long as it is
* a subclass of ImageBoundaryCondition. */
void OverrideBoundaryCondition(const ImageBoundaryConditionPointerType i)
{ m_BoundsCondition = i; }
/** Get the boundary condition specified */
ImageBoundaryConditionPointerType GetBoundaryCondition()
{ return m_BoundsCondition; }
/** NeighborhoodOperatorImageFilter needs a larger input requested
* region than the output requested region. As such,
* NeighborhoodOperatorImageFilter needs to provide an implementation for
* GenerateInputRequestedRegion() in order to inform the pipeline
* execution model.
*
* \sa ProcessObject::GenerateInputRequestedRegion() */
virtual void GenerateInputRequestedRegion() throw (InvalidRequestedRegionError);
#ifdef ITK_USE_CONCEPT_CHECKING
/** Begin concept checking */
itkConceptMacro(SameDimensionCheck,
(Concept::SameDimension<InputImageDimension, ImageDimension>));
itkConceptMacro(OperatorConvertibleToOutputCheck,
(Concept::Convertible<OperatorValueType, OutputPixelType>));
itkConceptMacro(InputConvertibleToOperatorCheck,
(Concept::Convertible<InputPixelType, OperatorValueType>));
itkConceptMacro(OperatorMultiplyOperatorCheck,
(Concept::MultiplyOperator<OperatorValueType>));
itkConceptMacro(OperatorAdditiveOperatorsCheck,
(Concept::AdditiveOperators<OperatorValueType>));
/** End concept checking */
#endif
protected:
NeighborhoodOperatorImageFilter()
{ m_BoundsCondition = static_cast<ImageBoundaryConditionPointerType>(&m_DefaultBoundaryCondition); }
virtual ~NeighborhoodOperatorImageFilter() {}
/** NeighborhoodOperatorImageFilter can be implemented as a
* multithreaded filter. Therefore, this implementation provides a
* ThreadedGenerateData() routine which is called for each
* processing thread. The output image data is allocated
* automatically by the superclass prior to calling
* ThreadedGenerateData(). ThreadedGenerateData can only write to
* the portion of the output image specified by the parameter
* "outputRegionForThread"
*
* \sa ImageToImageFilter::ThreadedGenerateData(),
* ImageToImageFilter::GenerateData() */
void ThreadedGenerateData(const OutputImageRegionType& outputRegionForThread,
int threadId );
void PrintSelf(std::ostream& os, Indent indent) const
{ Superclass::PrintSelf(os, indent); }
private:
NeighborhoodOperatorImageFilter(const Self&); //purposely not implemented
void operator=(const Self&); //purposely not implemented
/** Internal operator used to filter the image. */
OutputNeighborhoodType m_Operator;
/** Pointer to a persistent boundary condition object used
* for the image iterator. */
ImageBoundaryConditionPointerType m_BoundsCondition;
/** Default boundary condition */
DefaultBoundaryCondition m_DefaultBoundaryCondition;
};
} // end namespace itk
#ifndef ITK_MANUAL_INSTANTIATION
#include "itkNeighborhoodOperatorImageFilter.txx"
#endif
#endif
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