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/*=========================================================================
Program: Insight Segmentation & Registration Toolkit
Module: $RCSfile: itkNaryFunctorImageFilter.h,v $
Language: C++
Date: $Date: 2006-10-25 12:12:57 $
Version: $Revision: 1.16 $
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 __itkNaryFunctorImageFilter_h
#define __itkNaryFunctorImageFilter_h
#include "itkInPlaceImageFilter.h"
#include "itkImageIterator.h"
#include "itkArray.h"
namespace itk
{
/** \class NaryFunctorImageFilter
* \brief Implements pixel-wise generic operation of Nth similar images.
*
* This class is parameterized over the types of the input images
* and the type of the output image. It is also parameterized by the
* operation to be applied. A Functor style is used to represent the
* function.
*
* All the input images are of the same type.
*
* \ingroup IntensityImageFilters Multithreaded
*/
template <class TInputImage, class TOutputImage, class TFunction >
class ITK_EXPORT NaryFunctorImageFilter :
public InPlaceImageFilter<TInputImage,TOutputImage>
{
public:
/** Standard class typedefs. */
typedef NaryFunctorImageFilter Self;
typedef InPlaceImageFilter<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(NaryFunctorImageFilter, InPlaceImageFilter);
/** Some typedefs. */
typedef TFunction FunctorType;
typedef TInputImage InputImageType;
typedef typename InputImageType::Pointer InputImagePointer;
typedef typename InputImageType::RegionType InputImageRegionType;
typedef typename InputImageType::PixelType InputImagePixelType;
typedef TOutputImage OutputImageType;
typedef typename OutputImageType::Pointer OutputImagePointer;
typedef typename OutputImageType::RegionType OutputImageRegionType;
typedef typename OutputImageType::PixelType OutputImagePixelType;
typedef std::vector< InputImagePixelType > NaryArrayType;
/** Get the functor object. The functor is returned by reference.
* (Functors do not have to derive from itk::LightObject, so they do
* not necessarily have a reference count. So we cannot return a
* SmartPointer). */
FunctorType& GetFunctor() { return m_Functor; };
/** Set the functor object. This replaces the current Functor with a
* copy of the specified Functor. This allows the user to specify a
* functor that has ivars set differently than the default functor.
* This method requires an operator!=() be defined on the functor
* (or the compiler's default implementation of operator!=() being
* appropriate). */
void SetFunctor(FunctorType& functor)
{
if ( m_Functor != functor )
{
m_Functor = functor;
this->Modified();
}
}
/** ImageDimension constants */
itkStaticConstMacro(
InputImageDimension, unsigned int, TInputImage::ImageDimension);
itkStaticConstMacro(
OutputImageDimension, unsigned int, TOutputImage::ImageDimension);
#ifdef ITK_USE_CONCEPT_CHECKING
/** Begin concept checking */
itkConceptMacro(SameDimensionCheck,
(Concept::SameDimension<InputImageDimension, OutputImageDimension>));
itkConceptMacro(OutputHasZeroCheck,
(Concept::HasZero<OutputImagePixelType>));
/** End concept checking */
#endif
protected:
NaryFunctorImageFilter();
virtual ~NaryFunctorImageFilter() {};
/** NaryFunctorImageFilter 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 );
private:
NaryFunctorImageFilter(const Self&); //purposely not implemented
void operator=(const Self&); //purposely not implemented
FunctorType m_Functor;
};
} // end namespace itk
#ifndef ITK_MANUAL_INSTANTIATION
#include "itkNaryFunctorImageFilter.txx"
#endif
#endif
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