/usr/include/ITK-4.5/itkVectorLinearInterpolateNearestNeighborExtrapolateImageFunction.h is in libinsighttoolkit4-dev 4.5.0-3.
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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 __itkVectorLinearInterpolateNearestNeighborExtrapolateImageFunction_h
#define __itkVectorLinearInterpolateNearestNeighborExtrapolateImageFunction_h
#include "itkVectorInterpolateImageFunction.h"
namespace itk
{
/**
* \class VectorLinearInterpolateNearestNeighborExtrapolateImageFunction
* \brief Linearly interpolate or NN extrapolate a vector image at
* specified positions.
*
* VectorLinearInterpolateNearestNeighborExtrapolateImageFunction
* linearly interpolates (or NN extrapolates) a vector
* image intensity non-integer pixel position. This class is templated
* over the input image type and the coordinate representation type.
*
* This class is designed to work as a VectorInterpolateImageFunction,
* hence the IsInsideBuffer(PointType p) is overridden to always
* answer true
*
* This function works for N-dimensional images.
*
* \author Tom Vercauteren, INRIA & Mauna Kea Technologies
*
* \warning This function work only for Vector images. For
* scalar images use LinearInterpolateImageFunction.
*
* This paper was contributed in the Insight Journal paper:
* http://hdl.handle.net/1926/510
*
* \ingroup ImageFunctions ImageInterpolators
* \ingroup ITKImageFunction
*
*/
template< typename TInputImage, typename TCoordRep = float >
class VectorLinearInterpolateNearestNeighborExtrapolateImageFunction:
public VectorInterpolateImageFunction< TInputImage, TCoordRep >
{
public:
/** Standard class typedefs. */
typedef VectorLinearInterpolateNearestNeighborExtrapolateImageFunction Self;
typedef VectorInterpolateImageFunction< TInputImage, TCoordRep > Superclass;
typedef SmartPointer< Self > Pointer;
typedef SmartPointer< const Self > ConstPointer;
/** Method for creation through the object factory. */
itkNewMacro(Self);
/** Run-time type information (and related methods). */
itkTypeMacro(VectorLinearInterpolateNearestNeighborExtrapolateImageFunction,
VectorInterpolateImageFunction);
/** InputImageType typedef support. */
typedef typename Superclass::InputImageType InputImageType;
typedef typename Superclass::PixelType PixelType;
typedef typename Superclass::ValueType ValueType;
typedef typename Superclass::RealType RealType;
typedef typename Superclass::PointType PointType;
/** Grab the vector dimension from the superclass. */
//itkStaticConstMacro(Dimension, unsigned int,
// Superclass::Dimension);
/** Dimension underlying input image. */
itkStaticConstMacro(ImageDimension, unsigned int, Superclass::ImageDimension);
/** Index typedef support. */
typedef typename Superclass::IndexType IndexType;
typedef typename Superclass::IndexValueType IndexValueType;
/** ContinuousIndex typedef support. */
typedef typename Superclass::ContinuousIndexType ContinuousIndexType;
/** Output type is Vector<double,Dimension> */
typedef typename Superclass::OutputType OutputType;
/** Should check if an index is inside the image buffer, however we
* require that it answers true to use the extrapolation possibility. */
virtual bool IsInsideBuffer(const IndexType &) const
{
return true;
}
/** Should check if a point is inside the image buffer, however we
* require that it answers true to use the extrapolation possibility. */
virtual bool IsInsideBuffer(const PointType &) const
{
return true;
}
/** Should check if a continuous index is inside the image buffer, however we
* require that it answers true to use the extrapolation possibility. */
virtual bool IsInsideBuffer(const ContinuousIndexType &) const
{
return true;
}
/** Evaluate the function at a ContinuousIndex position
*
* Returns the linearly interpolated image intensity at a
* specified point position. If the point does not lie within the
* image buffer a nearest neighbor interpolation is done. */
virtual OutputType EvaluateAtContinuousIndex(
const ContinuousIndexType & index) const;
/** Evaluate the function at an index position
*
* Simply returns the image value at the
* specified index position. If the index does not lie within the
* image buffer a nearest neighbor interpolation is done. */
virtual OutputType EvaluateAtIndex(const IndexType & index) const;
protected:
VectorLinearInterpolateNearestNeighborExtrapolateImageFunction();
virtual ~VectorLinearInterpolateNearestNeighborExtrapolateImageFunction() {}
virtual void PrintSelf(std::ostream & os, Indent indent) const;
private:
VectorLinearInterpolateNearestNeighborExtrapolateImageFunction(const Self &); //purposely
// not
// implemented
void operator=(const Self &); //purposely
// not
// implemented
/** Number of neighbors used in the interpolation */
static const unsigned int m_Neighbors;
};
} // end namespace itk
#ifndef ITK_MANUAL_INSTANTIATION
#include "itkVectorLinearInterpolateNearestNeighborExtrapolateImageFunction.hxx"
#endif
#endif
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