/usr/include/ITK-4.5/itkBSplineInterpolationWeightFunction.h is in libinsighttoolkit4-dev 4.5.0-3.
This file is owned by root:root, with mode 0o644.
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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 __itkBSplineInterpolationWeightFunction_h
#define __itkBSplineInterpolationWeightFunction_h
#include "itkFunctionBase.h"
#include "itkContinuousIndex.h"
#include "itkBSplineKernelFunction.h"
#include "itkArray.h"
#include "itkArray2D.h"
namespace itk
{
/** \class BSplineInterpolationWeightFunction
* \brief Returns the weights over the support region used for B-spline
* interpolation/reconstruction.
*
* Computes/evaluate the B-spline interpolation weights over the
* support region of the B-spline.
*
* This class is templated over the coordinate representation type,
* the space dimension and the spline order.
*
* \sa Point
* \sa Index
* \sa ContinuousIndex
*
* \ingroup Functions ImageInterpolators
* \ingroup ITKCommon
*/
template<
typename TCoordRep = float,
unsigned int VSpaceDimension = 2,
unsigned int VSplineOrder = 3
>
class BSplineInterpolationWeightFunction:
public FunctionBase< ContinuousIndex< TCoordRep, VSpaceDimension >,
Array< double > >
{
public:
/** Standard class typedefs. */
typedef BSplineInterpolationWeightFunction Self;
typedef FunctionBase< ContinuousIndex< TCoordRep, VSpaceDimension >,
Array< double > > Superclass;
typedef SmartPointer< Self > Pointer;
typedef SmartPointer< const Self > ConstPointer;
/** New macro for creation of through the object factory. */
itkNewMacro(Self);
/** Run-time type information (and related methods). */
itkTypeMacro(BSplineInterpolationWeightFunction, FunctionBase);
/** Space dimension. */
itkStaticConstMacro(SpaceDimension, unsigned int, VSpaceDimension);
/** Spline order. */
itkStaticConstMacro(SplineOrder, unsigned int, VSplineOrder);
/** OutputType typedef support. */
typedef Array< double > WeightsType;
/** Index and size typedef support. */
typedef Index< VSpaceDimension > IndexType;
typedef Size< VSpaceDimension > SizeType;
/** ContinuousIndex typedef support. */
typedef ContinuousIndex< TCoordRep, VSpaceDimension > ContinuousIndexType;
/** Evaluate the weights at specified ContinousIndex position.
* Subclasses must provide this method. */
virtual WeightsType Evaluate(const ContinuousIndexType & index) const;
/** Evaluate the weights at specified ContinousIndex position.
* The weights are returned in the user specified container.
* This function assume that weights can hold
* (SplineOrder + 1)^(SpaceDimension) elements. For efficiency,
* no size checking is done.
* On return, startIndex contains the start index of the
* support region over which the weights are defined.
*/
virtual void Evaluate(const ContinuousIndexType & index,
WeightsType & weights, IndexType & startIndex) const;
/** Get support region size. */
itkGetConstMacro(SupportSize, SizeType);
/** Get number of weights. */
itkGetConstMacro(NumberOfWeights, unsigned int);
protected:
BSplineInterpolationWeightFunction();
~BSplineInterpolationWeightFunction() {}
void PrintSelf(std::ostream & os, Indent indent) const;
private:
BSplineInterpolationWeightFunction(const Self &); //purposely not implemented
void operator=(const Self &); //purposely not implemented
/** Number of weights. */
unsigned int m_NumberOfWeights;
/** Size of support region. */
SizeType m_SupportSize;
/** Lookup table type. */
typedef Array2D< unsigned int > TableType;
/** Table mapping linear offset to indices. */
TableType m_OffsetToIndexTable;
/** Interpolation kernel type. */
typedef BSplineKernelFunction< itkGetStaticConstMacro(SplineOrder) > KernelType;
/** Interpolation kernel. */
typename KernelType::Pointer m_Kernel;
};
} // end namespace itk
#ifndef ITK_MANUAL_INSTANTIATION
#include "itkBSplineInterpolationWeightFunction.hxx"
#endif
#endif
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