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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 itkSliceBySliceImageFilter_h
#define itkSliceBySliceImageFilter_h
#include "itkImageToImageFilter.h"
namespace itk
{
/**
* \class SliceBySliceImageFilter
* \brief Apply a filter or a pipeline slice by slice on an image
*
* SliceBySliceImageFilter let the user apply a filter or a pipeline
* of filters on the slices of an image. The filters must work on images
* smaller of one dimension than the input and output images of the
* SliceBySliceImageFilter - if the SliceBySliceImageFilter work on 3D
* images, the filters used internally must work on 2D images.
*
* The dimension along which the slices are extracted can be selected with SetDimension()
* and defaults to the last one.
*
* SliceBySliceImageFilter takes the input and the output filters of a pipeline
* as parameter. They can be set with SetInputFilter() and SetOutputFilter().
* The pipeline will be run once per slice.
*
* If there is only one filter to apply to the slices of the input image,
* the SetFilter() method can be used to set the filter passed as parameter
* both as the input and as the output filter.
*
* SliceBySliceImageFilter can take several images as input. In that case, the same
* number of slices will be passed to the input filter. If the output filter
* produce several output slices, SliceBySliceImageFilter produce the same number
* of output images. The input images are passed with the same input number
* to the input filter - if SetInput( 3, img ) is used on the SliceBySliceImageFilter
* the corresponding slice will be passed to the input filter with SetInput( 3, img ).
* See https://www.itk.org/pipermail/insight-users/2008-May/026112.html for an
* example of usage of that feature with MaskImageFilter.
*
* The input requested region is enlarged to cover whole slices,
* but not in the slice direction - however, the internal pipeline
* only requests the output requested region for that slice (the
* requested region per slice is not enlarged to the whole slice
* unless done by the internal filters ).
*
* The output images of SliceBySliceImageFilter must be of the same size than the
* input images. All the input images must be of the same pixel type. All the
* output images must be of the same pixel type.
*
* \author Gaetan Lehmann
*
* This class was taken from the Insight Journal paper:
* https://hdl.handle.net/1926/368
*
* \ingroup ITKImageGrid
*/
template< typename TInputImage,
typename TOutputImage,
typename TInputFilter = ImageToImageFilter<
Image< typename TInputImage::PixelType, TInputImage::ImageDimension - 1 >,
Image< typename TOutputImage::PixelType, TOutputImage ::ImageDimension - 1 > >,
class TOutputFilter = typename TInputFilter::Superclass,
class TInternalInputImage = typename TInputFilter::InputImageType,
class TInternalOutputImage = typename TOutputFilter::OutputImageType >
class ITK_TEMPLATE_EXPORT SliceBySliceImageFilter:
public ImageToImageFilter< TInputImage, TOutputImage >
{
public:
/** Standard class typedefs. */
typedef SliceBySliceImageFilter Self;
typedef ImageToImageFilter< TInputImage, TOutputImage > Superclass;
typedef SmartPointer< Self > Pointer;
typedef SmartPointer< const Self > ConstPointer;
/** Superclass typedefs. */
typedef typename Superclass::InputImagePointer InputImagePointer;
/** Standard New method. */
itkNewMacro(Self);
/** Runtime information support. */
itkTypeMacro(SliceBySliceImageFilter, ImageToImageFilter);
/** Image related typedefs. */
typedef TInputImage InputImageType;
typedef typename TInputImage::RegionType RegionType;
typedef typename TInputImage::SizeType SizeType;
typedef typename TInputImage::IndexType IndexType;
typedef typename TInputImage::PixelType PixelType;
typedef typename TInputImage::OffsetType OffsetType;
typedef TOutputImage OutputImageType;
typedef typename TOutputImage::PixelType OutputPixelType;
typedef TInputFilter InputFilterType;
typedef TOutputFilter OutputFilterType;
typedef TInternalInputImage InternalInputImageType;
typedef typename InternalInputImageType::RegionType InternalRegionType;
typedef typename InternalInputImageType::SizeType InternalSizeType;
typedef typename InternalInputImageType::IndexType InternalIndexType;
typedef typename InternalInputImageType::OffsetType InternalOffsetType;
typedef typename InternalInputImageType::PixelType InternalInputPixelType;
typedef typename InternalInputImageType::SpacingType InternalSpacingType;
typedef typename InternalInputImageType::PointType InternalPointType;
typedef TInternalOutputImage InternalOutputImageType;
typedef typename InternalOutputImageType::PixelType InternalOutputPixelType;
/** Image related typedefs. */
itkStaticConstMacro(ImageDimension, unsigned int,
TInputImage::ImageDimension);
itkStaticConstMacro(InternalImageDimension, unsigned int,
InternalInputImageType::ImageDimension);
itkSetMacro(Dimension, unsigned int);
itkGetConstMacro(Dimension, unsigned int);
void SetFilter(InputFilterType *filter);
InputFilterType * GetFilter()
{
return this->m_InputFilter;
}
const InputFilterType * GetFilter() const
{
return this->m_InputFilter;
}
void SetInputFilter(InputFilterType *filter);
itkGetModifiableObjectMacro(InputFilter, InputFilterType);
void SetOutputFilter(OutputFilterType *filter);
itkGetModifiableObjectMacro(OutputFilter, OutputFilterType);
/** The index of the slice currently processed by the filter. This is intended to be
* used with the IterationEvent sent before the processing of each object. It contains
* a relevant value only during the filter update.
*/
itkGetConstMacro(SliceIndex, IndexValueType);
protected:
SliceBySliceImageFilter();
~SliceBySliceImageFilter() ITK_OVERRIDE {}
void VerifyInputInformation() ITK_OVERRIDE;
void GenerateData() ITK_OVERRIDE;
void PrintSelf(std::ostream & os, Indent indent) const ITK_OVERRIDE;
virtual void GenerateInputRequestedRegion() ITK_OVERRIDE;
private:
ITK_DISALLOW_COPY_AND_ASSIGN(SliceBySliceImageFilter);
unsigned int m_Dimension;
typename InputFilterType::Pointer m_InputFilter;
typename OutputFilterType::Pointer m_OutputFilter;
IndexValueType m_SliceIndex;
};
}
#ifndef ITK_MANUAL_INSTANTIATION
#include "itkSliceBySliceImageFilter.hxx"
#endif
#endif
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