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/*=========================================================================
Program: Insight Segmentation & Registration Toolkit
Module: $RCSfile: itkChangeLabelImageFilter.h,v $
Language: C++
Date: $Date: 2008-02-13 20:52:34 $
Version: $Revision: 1.6 $
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 __itkChangeLabelImageFilter_h
#define __itkChangeLabelImageFilter_h
#include "itkUnaryFunctorImageFilter.h"
#include "itkConceptChecking.h"
#include "itkSimpleDataObjectDecorator.h"
namespace itk
{
/** \class ChangeLabelImageFilter
*
* \brief Change Sets of Labels
*
* This filter produces an output image whose pixels
* are either copied from the input if they are not being changed
* or are rewritten based on the change parameters
*
* This filter is templated over the input image type
* and the output image type.
*
* The filter expect both images to have the same number of dimensions.
*
* \author Tim Kelliher. GE Research, Niskayuna, NY.
* \note This work was supported by a grant from DARPA, executed by the
* U.S. Army Medical Research and Materiel Command/TATRC Assistance
* Agreement, Contract# W81XWH-05-2-0059.
*
* \ingroup IntensityImageFilters Multithreaded
*/
#include <map>
namespace Functor {
template< class TInput, class TOutput>
class ChangeLabel
{
public:
ChangeLabel() {};
~ChangeLabel() {};
typedef std::map<TInput, TOutput> ChangeMapType;
bool operator!=( const ChangeLabel & other ) const
{
if (m_ChangeMap != other.m_ChangeMap)
{
return true;
}
return false;
}
bool operator==( const ChangeLabel & other ) const
{
return !(*this != other);
}
TOutput GetChange( const TInput & original )
{
return m_ChangeMap[original];
}
void SetChange( const TInput & original, const TOutput & result )
{
m_ChangeMap[original] = result;
}
void SetChangeMap( const ChangeMapType & changeMap )
{
m_ChangeMap = changeMap;
}
void ClearChangeMap( )
{
m_ChangeMap.clear();
}
inline TOutput operator()( const TInput & A )
{
if ( m_ChangeMap.find(A) != m_ChangeMap.end() )
{
return m_ChangeMap[A];
}
return A;
}
private:
ChangeMapType m_ChangeMap;
};
}
template <class TInputImage, class TOutputImage>
class ITK_EXPORT ChangeLabelImageFilter :
public
UnaryFunctorImageFilter<TInputImage,TOutputImage,
Functor::ChangeLabel<
typename TInputImage::PixelType,
typename TOutputImage::PixelType> >
{
public:
/** Standard class typedefs. */
typedef ChangeLabelImageFilter Self;
typedef UnaryFunctorImageFilter<TInputImage,TOutputImage,
Functor::ChangeLabel<
typename TInputImage::PixelType,
typename TOutputImage::PixelType>
> 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(ChangeLabelImageFilter, UnaryFunctorImageFilter);
/** Pixel types. */
typedef typename TInputImage::PixelType InputPixelType;
typedef typename TOutputImage::PixelType OutputPixelType;
/** Type of the change map to use for change requests */
typedef std::map<InputPixelType, OutputPixelType> ChangeMapType;
/** Set up a change of a single label */
void SetChange( const InputPixelType & original, const OutputPixelType & result );
/** Set the entire change map */
void SetChangeMap( const ChangeMapType & changeMap );
/** Clears the entire change map */
void ClearChangeMap( );
#ifdef ITK_USE_CONCEPT_CHECKING
/** Begin concept checking */
itkConceptMacro(InputConvertibleToOutputCheck,
(Concept::Convertible<InputPixelType, OutputPixelType>));
itkConceptMacro(PixelTypeComparable,
(Concept::Comparable<InputPixelType>));
/** End concept checking */
#endif
protected:
ChangeLabelImageFilter();
virtual ~ChangeLabelImageFilter() {}
void PrintSelf(std::ostream& os, Indent indent) const;
private:
ChangeLabelImageFilter(const Self&); //purposely not implemented
void operator=(const Self&); //purposely not implemented
};
} // end namespace itk
#ifndef ITK_MANUAL_INSTANTIATION
#include "itkChangeLabelImageFilter.txx"
#endif
#endif
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