/usr/include/InsightToolkit/Common/itkInterpolateImageFunction.h is in libinsighttoolkit3-dev 3.20.1-1.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 | /*=========================================================================
Program: Insight Segmentation & Registration Toolkit
Module: itkInterpolateImageFunction.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.
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 __itkInterpolateImageFunction_h
#define __itkInterpolateImageFunction_h
#include "itkImageFunction.h"
namespace itk
{
/** \class InterpolateImageFunction
* \brief Base class for all image interpolaters.
*
* InterpolateImageFunction is the base for all ImageFunctions that
* interpolates image intensity at a non-integer pixel position.
* This class is templated over the input image type and the
* coordinate representation type (e.g. float or double ).
*
* \warning This heirarchy of functions work only for images
* with scalar pixel types. For images of vector pixel types
* use VectorInterpolateImageFunctions.
*
* \sa VectorInterpolateImageFunction
* \ingroup ImageFunctions ImageInterpolators
*
* */
template <class TInputImage, class TCoordRep = double>
class ITK_EXPORT InterpolateImageFunction :
public ImageFunction< TInputImage,
ITK_TYPENAME NumericTraits<typename TInputImage::PixelType>::RealType, TCoordRep >
{
public:
/** Standard class typedefs. */
typedef InterpolateImageFunction Self;
typedef ImageFunction<TInputImage,
typename NumericTraits<typename TInputImage::PixelType>::RealType,
TCoordRep> Superclass;
typedef SmartPointer<Self> Pointer;
typedef SmartPointer<const Self> ConstPointer;
/** Run-time type information (and related methods). */
itkTypeMacro(InterpolateImageFunction, ImageFunction);
/** OutputType typedef support. */
typedef typename Superclass::OutputType OutputType;
/** InputImageType typedef support. */
typedef typename Superclass::InputImageType InputImageType;
/** Dimension underlying input image. */
itkStaticConstMacro(ImageDimension, unsigned int,
Superclass::ImageDimension);
/** Point typedef support. */
typedef typename Superclass::PointType PointType;
/** Index typedef support. */
typedef typename Superclass::IndexType IndexType;
typedef typename Superclass::IndexValueType IndexValueType;
/** ContinuousIndex typedef support. */
typedef typename Superclass::ContinuousIndexType ContinuousIndexType;
/** RealType typedef support. */
typedef typename NumericTraits<typename TInputImage::PixelType>::RealType RealType;
/** Interpolate the image at a point position
*
* Returns the interpolated image intensity at a
* specified point position. No bounds checking is done.
* The point is assume to lie within the image buffer.
*
* ImageFunction::IsInsideBuffer() can be used to check bounds before
* calling the method. */
virtual OutputType Evaluate( const PointType& point ) const
{
ContinuousIndexType index;
this->GetInputImage()->TransformPhysicalPointToContinuousIndex( point, index );
return ( this->EvaluateAtContinuousIndex( index ) );
}
/** Interpolate the image at a continuous index position
*
* Returns the interpolated image intensity at a
* specified index position. No bounds checking is done.
* The point is assume to lie within the image buffer.
*
* Subclasses must override this method.
*
* ImageFunction::IsInsideBuffer() can be used to check bounds before
* calling the method. */
virtual OutputType EvaluateAtContinuousIndex(
const ContinuousIndexType & index ) const = 0;
/** Interpolate the image at an index position.
*
* Simply returns the image value at the
* specified index position. No bounds checking is done.
* The point is assume to lie within the image buffer.
*
* ImageFunction::IsInsideBuffer() can be used to check bounds before
* calling the method. */
virtual OutputType EvaluateAtIndex( const IndexType & index ) const
{
return ( static_cast<RealType>( this->GetInputImage()->GetPixel( index ) ) );
}
protected:
InterpolateImageFunction(){};
~InterpolateImageFunction(){};
void PrintSelf(std::ostream& os, Indent indent) const
{ Superclass::PrintSelf( os, indent ); }
private:
InterpolateImageFunction( const Self& ); //purposely not implemented
void operator=( const Self& ); //purposely not implemented
};
} // end namespace itk
#endif
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