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/*=========================================================================
*
* Copyright Insight Software Consortium
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0.txt
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*=========================================================================*/
#ifndef itkInterpolateImageFilter_h
#define itkInterpolateImageFilter_h
#include "itkImageToImageFilter.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
* \ingroup ITKImageGrid
*/
template< typename TInputImage, typename TOutputImage >
class ITK_TEMPLATE_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);
itkGetConstMacro(Distance, double);
/** Get/Set the interpolator function */
itkSetObjectMacro(Interpolator, InterpolatorType)
itkGetModifiableObjectMacro(Interpolator, InterpolatorType);
/** This method is used to set the state of the filter before
* multi-threading. */
void BeforeThreadedGenerateData() ITK_OVERRIDE;
/** This method is used to run after multi-threading. */
void AfterThreadedGenerateData() ITK_OVERRIDE;
#ifdef ITK_USE_CONCEPT_CHECKING
// Begin concept checking
itkConceptMacro( InputHasNumericTraitsCheck,
( Concept::HasNumericTraits< InputPixelType > ) );
// End concept checking
#endif
protected:
InterpolateImageFilter();
~InterpolateImageFilter() ITK_OVERRIDE {}
void PrintSelf(std::ostream & os, Indent indent) const ITK_OVERRIDE;
/** InterpolateImageFilter can be implemented as a multithreaded filter. */
void ThreadedGenerateData(const OutputImageRegionType & outputRegionForThread,
ThreadIdType threadId) ITK_OVERRIDE;
private:
ITK_DISALLOW_COPY_AND_ASSIGN(InterpolateImageFilter);
typename InterpolatorType::Pointer m_Interpolator;
typename IntermediateImageType::Pointer m_IntermediateImage;
double m_Distance;
};
} // end namespace itk
#ifndef ITK_MANUAL_INSTANTIATION
#include "itkInterpolateImageFilter.hxx"
#endif
#endif
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