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/*=========================================================================
Program: Insight Segmentation & Registration Toolkit
Module: itkBSplineL2ResampleImageFilterBase.h
Language: C++
Date: $Date$
Version: $Revision$
Copyright (c) Insight Software Consortium. All rights reserved.
See ITKCopyright.txt or http://www.itk.org/HTML/Copyright.htm for details.
Portions of this code are covered under the VTK copyright.
See VTKCopyright.txt or http://www.kitware.com/VTKCopyright.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 __itkBSplineL2ResampleImageFilterBase_h
#define __itkBSplineL2ResampleImageFilterBase_h
#include <vector>
namespace itk
{
/** \class BSplineL2ResampleImageFilterBase
* \brief Uses the "Centered l2" B-Spline pyramid implementation of B-Spline Filters
* to up/down sample an image by a factor of 2.
*
* This class defines N-Dimension B-Spline transformation.
* It is based on:
* [1] M. Unser,
* "Splines: A Perfect Fit for Signal and Image Processing,"
* IEEE Signal Processing Magazine, vol. 16, no. 6, pp. 22-38,
* November 1999.
* [2] M. Unser, A. Aldroubi and M. Eden,
* "B-Spline Signal Processing: Part I--Theory,"
* IEEE Transactions on Signal Processing, vol. 41, no. 2, pp. 821-832,
* February 1993.
* [3] M. Unser, A. Aldroubi and M. Eden,
* "B-Spline Signal Processing: Part II--Efficient Design and Applications,"
* IEEE Transactions on Signal Processing, vol. 41, no. 2, pp. 834-848,
* February 1993.
* [4] P. Brigger, F. Miller, K. Illgner, M. Unser, "Centered Pyramids,"
* IEEE Transactions on Image Processing, vol. 8, no. 9, pp. 1254-1264,
* September 1999.
* And code obtained from bigwww.epfl.ch by Philippe Thevenaz
*
* Limitations: Spline order for the centered l2 pyramid must be 0,1,3, or 5.
* This code cannot be multi-threaded since the entire image must be
* traversed in the proper order.
* This code cannot be streamed and requires the all of the input image.
* Only up/down samples by a factor of 2.
* This is a base class and is not meant to be instantiated on its own.
* It requires one of the itkBSplineDownsampleImageFilter or
* itkBSplineUpsampleImageFilter classes.
* Spline order must be set before setting the image.
* Uses mirror boundary conditions.
* Requires the same order of Spline for each dimension.
*
* \sa itkBSplineDownsampleImageFilter
* \sa itkBSplineUpsampleImageFilter
* \sa itkBSplineResampleImageFilterBase
* \sa itkBSplineCenteredResampleImageFilterBase
* \sa itkBSplineCenteredL2ResampleImageFilterBase
*
* \ingroup GeometricTransformationFilters
* \ingroup SingleThreaded
* \ingroup CannotBeStreamed
*/
template <class TInputImage, class TOutputImage>
class ITK_EXPORT BSplineL2ResampleImageFilterBase :
public BSplineResampleImageFilterBase<TInputImage,TOutputImage>
{
public:
/** Standard class typedefs. */
typedef BSplineL2ResampleImageFilterBase Self;
typedef BSplineResampleImageFilterBase<TInputImage, TOutputImage> Superclass;
typedef SmartPointer<Self> Pointer;
typedef SmartPointer<const Self> ConstPointer;
/** Run-time type information (and related methods). */
itkTypeMacro(BSplineL2ResampleImageFilterBase, BSplineResampleImageFilterBase);
protected:
virtual void InitializePyramidSplineFilter(int SplineOrder);
BSplineL2ResampleImageFilterBase();
virtual ~BSplineL2ResampleImageFilterBase() {};
void PrintSelf(std::ostream& os, Indent indent) const;
private:
BSplineL2ResampleImageFilterBase( const Self& ); //purposely not implemented
void operator=( const Self& ); //purposely not implemented
};
} // namespace itk
#ifndef ITK_MANUAL_INSTANTIATION
#include "itkBSplineL2ResampleImageFilterBase.txx"
#endif
#endif
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