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/*=========================================================================
Program: Insight Segmentation & Registration Toolkit
Module: $RCSfile: itkInterpolateImageFilter.h,v $
Language: C++
Date: $Date: 2006-03-29 14:53:40 $
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 __itkInterpolateImageFilter_h
#define __itkInterpolateImageFilter_h
#include "itkImageToImageFilter.h"
#include "itkImage.h"
#include "itkInterpolateImageFunction.h"
#include "itkLinearInterpolateImageFunction.h"
namespace itk
{
/** \class InterpolateImageFilter
* \brief Interpolate an image from two N-D images.
*
* Interpolates an image from two input images of the same type
* and same dimension (N). In particular, this filter forms an intermediate
* (N+1)D image by concatenating the two input images and interpolating
* an image a distance \f$ d \in [0,1] \f$ away from the first image.
*
* The interpolation is delegated to a user specified InterpolateImageFunction.
* By default, linear interpolation is used.
*
* The filter is templated over the input image type and output image type.
* It assumes that the input and output have the same number of dimensions.
*
* \ingroup Multithreaded
*/
template < class TInputImage, class TOutputImage >
class ITK_EXPORT InterpolateImageFilter:
public ImageToImageFilter<TInputImage, TOutputImage>
{
public:
/** Standard class typedefs. */
typedef InterpolateImageFilter 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(InterpolateImageFilter, ImageToImageFilter);
/** Inherit typedefs from Superclass */
typedef typename Superclass::InputImageType InputImageType;
typedef typename Superclass::InputImagePointer InputImagePointer;
typedef typename Superclass::OutputImageType OutputImageType;
typedef typename Superclass::OutputImagePointer OutputImagePointer;
typedef typename Superclass::OutputImageRegionType OutputImageRegionType;
/** Number of dimensions. */
itkStaticConstMacro(ImageDimension, unsigned int,
TOutputImage::ImageDimension);
itkStaticConstMacro(IntermediateImageDimension, unsigned int,
TOutputImage::ImageDimension + 1);
/** Interpolator typedef. */
typedef typename TInputImage::PixelType InputPixelType;
typedef Image<InputPixelType,itkGetStaticConstMacro(IntermediateImageDimension)> IntermediateImageType;
typedef InterpolateImageFunction<IntermediateImageType> InterpolatorType;
/** Set/Get the first image */
void SetInput1( const InputImageType * image)
{ this->SetInput( image ); }
const InputImageType * GetInput1()
{ return this->GetInput(); }
/** Set/Get the second image */
void SetInput2( const InputImageType * image);
const InputImageType * GetInput2();
/** Set/Get the distance from the first image from which to generate
* interpolated image. The default value is 0.5 */
itkSetClampMacro( Distance, double, 0.0, 1.0 );
itkGetMacro( Distance, double );
/** Set the interpolator function */
itkSetObjectMacro( Interpolator, InterpolatorType )
/** Get a pointer to the interpolator function. */
itkGetObjectMacro( Interpolator, InterpolatorType );
/** This method is used to set the state of the filter before
* multi-threading. */
void BeforeThreadedGenerateData();
/** This method is used to run after multi-threading. */
void AfterThreadedGenerateData();
#ifdef ITK_USE_CONCEPT_CHECKING
/** Begin concept checking */
itkConceptMacro(InputHasNumericTraitsCheck,
(Concept::HasNumericTraits<InputPixelType>));
/** End concept checking */
#endif
protected:
InterpolateImageFilter();
~InterpolateImageFilter() {};
void PrintSelf(std::ostream& os, Indent indent) const;
/** InterpolateImageFilter can be implemented as a multithreaded filter. */
void ThreadedGenerateData(const OutputImageRegionType& outputRegionForThread,
int threadId );
private:
InterpolateImageFilter(const Self&); //purposely not implemented
void operator=(const Self&); //purposely not implemented
typename InterpolatorType::Pointer m_Interpolator;
typename IntermediateImageType::Pointer m_IntermediateImage;
double m_Distance;
};
} // end namespace itk
#ifndef ITK_MANUAL_INSTANTIATION
#include "itkInterpolateImageFilter.txx"
#endif
#endif
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