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/*=========================================================================
Program: Insight Segmentation & Registration Toolkit
Module: $RCSfile: itkBSplineCenteredL2ResampleImageFilterBase.h,v $
Language: C++
Date: $Date: 2003-09-10 14:28:43 $
Version: $Revision: 1.4 $
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 __itkBSplineCenteredL2ResampleImageFilterBase_h
#define __itkBSplineCenteredL2ResampleImageFilterBase_h
#include <vector>
#include "itkBSplineCenteredResampleImageFilterBase.h"
namespace itk
{
/** \class itkBSplineCenteredL2ResampleImageFilterBase
* \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 Centered L2 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 between 0 and 4.
* 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 itkBSplineL2ResampleImageFilterBase
*
* \ingroup GeometricTransformationFilters
* \ingroup SingleThreaded
* \ingroup CannotBeStreamed
*/
template <class TInputImage, class TOutputImage>
class ITK_EXPORT BSplineCenteredL2ResampleImageFilterBase :
public BSplineCenteredResampleImageFilterBase<TInputImage, TOutputImage>
{
public:
/** Standard class typedefs. */
typedef BSplineCenteredL2ResampleImageFilterBase Self;
typedef BSplineCenteredResampleImageFilterBase<TInputImage, TOutputImage> Superclass;
typedef SmartPointer<Self> Pointer;
typedef SmartPointer<const Self> ConstPointer;
/** Run-time type information (and related methods). */
itkTypeMacro(BSplineCenteredL2ResampleImageFilterBase, BSplineCenteredResampleImageFilterBase);
protected:
virtual void InitializePyramidSplineFilter(int SplineOrder);
BSplineCenteredL2ResampleImageFilterBase();
virtual ~BSplineCenteredL2ResampleImageFilterBase() {};
void PrintSelf(std::ostream& os, Indent indent) const;
private:
BSplineCenteredL2ResampleImageFilterBase( const Self& ); //purposely not implemented
void operator=( const Self& ); //purposely not implemented
};
} // namespace itk
#ifndef ITK_MANUAL_INSTANTIATION
#include "itkBSplineCenteredL2ResampleImageFilterBase.txx"
#endif
#endif
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