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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 itkImageKernelOperator_h
#define itkImageKernelOperator_h
#include "itkNeighborhoodOperator.h"
#include "itkImage.h"
namespace itk
{
/**
* \class ImageKernelOperator
* \brief A NeighborhoodOperator whose coefficients are from an image.
*
* This code was contributed in the Insight Journal paper:
*
* "Image Kernel Convolution"
* by Tustison N., Gee J.
* https://hdl.handle.net/1926/1323
* http://www.insight-journal.org/browse/publication/208
*
*
* \sa NeighborhoodOperator
* \sa NeighborhoodIterator
* \sa Neighborhood
*
* \ingroup Operators
* \ingroup ITKCommon
*/
template< typename TPixel, unsigned int VDimension = 2,
typename TAllocator = NeighborhoodAllocator< TPixel > >
class ITK_TEMPLATE_EXPORT ImageKernelOperator :
public NeighborhoodOperator< TPixel, VDimension, TAllocator >
{
public:
/** Standard class typedefs. */
typedef ImageKernelOperator Self;
typedef NeighborhoodOperator< TPixel, VDimension, TAllocator > Superclass;
typedef Image< TPixel, VDimension > ImageType;
typedef typename Superclass::SizeType SizeType;
typedef typename Superclass::CoefficientVector CoefficientVector;
itkTypeMacro(ImageKernelOperator, NeighborhoodOperator);
/** Constructor. */
ImageKernelOperator() {}
/** Copy constructor */
ImageKernelOperator(const Self & orig):
Neighborhood< TPixel, VDimension, TAllocator >(orig)
{}
/** Assignment operator. */
Self & operator=(const Self & orig)
{
Superclass::operator=(orig);
return *this;
}
/** Set the image kernel. Only images with odd size in all
* dimensions are allowed. If an image with an even size is passed
* as an argument, an exception will be thrown. */
void SetImageKernel(const ImageType *kernel);
/** Get the image kernel. */
const ImageType * GetImageKernel() const;
/** Prints information about the object. */
virtual void PrintSelf(std::ostream & os, Indent i) const ITK_OVERRIDE
{
os << i << "ImageKernelOperator { this=" << this
<< "} " << std::endl;
Superclass::PrintSelf( os, i.GetNextIndent() );
}
protected:
/** Calculates operator coefficients. */
CoefficientVector GenerateCoefficients() ITK_OVERRIDE;
/** Arranges coefficients spatially in the memory buffer. */
void Fill(const CoefficientVector & coeff) ITK_OVERRIDE;
private:
typename ImageType::ConstPointer m_ImageKernel;
};
} // namespace itk
#ifndef ITK_MANUAL_INSTANTIATION
#include "itkImageKernelOperator.hxx"
#endif
#endif
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