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
137
138
139
140
141
142
143
144
|
/*=========================================================================
*
* Copyright NumFOCUS
*
* 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
*
* https://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 itkVectorInterpolateImageFunction_h
#define itkVectorInterpolateImageFunction_h
#include "itkImageFunction.h"
#include "itkFixedArray.h"
namespace itk
{
/**
* \class VectorInterpolateImageFunction
* \brief Base class for all vector image interpolators.
*
* VectorInterpolateImageFunction is the base for all ImageFunctions that
* interpolates image with vector pixel types. This function outputs
* a return value of type Vector<double,Dimension>.
*
* This class is templated input image type and the coordinate
* representation type.
*
* \warning This hierarchy of functions work only for images
* with Vector-based pixel types. For scalar images use
* InterpolateImageFunction.
*
* \sa InterpolateImageFunction
* \ingroup ImageFunctions ImageInterpolators
* \ingroup ITKImageFunction
*/
template <typename TInputImage, typename TCoordRep = double>
class ITK_TEMPLATE_EXPORT VectorInterpolateImageFunction
: public ImageFunction<TInputImage, typename NumericTraits<typename TInputImage::PixelType>::RealType, TCoordRep>
{
public:
ITK_DISALLOW_COPY_AND_MOVE(VectorInterpolateImageFunction);
/** Extract the vector dimension from the pixel template parameter. */
static constexpr unsigned int Dimension = TInputImage::PixelType::Dimension;
/** Dimension underlying input image. */
static constexpr unsigned int ImageDimension = TInputImage::ImageDimension;
/** Standard class type aliases. */
using Self = VectorInterpolateImageFunction;
using Superclass =
ImageFunction<TInputImage, typename NumericTraits<typename TInputImage::PixelType>::RealType, TCoordRep>;
using Pointer = SmartPointer<Self>;
using ConstPointer = SmartPointer<const Self>;
/** \see LightObject::GetNameOfClass() */
itkOverrideGetNameOfClassMacro(VectorInterpolateImageFunction);
/** InputImageType type alias support */
using typename Superclass::InputImageType;
using PixelType = typename InputImageType::PixelType;
using ValueType = typename PixelType::ValueType;
using RealType = typename NumericTraits<ValueType>::RealType;
/** Point type alias support */
using typename Superclass::PointType;
/** Index type alias support */
using typename Superclass::IndexType;
/** ContinuousIndex type alias support */
using typename Superclass::ContinuousIndexType;
/** Output type is RealType of TInputImage::PixelType. */
using typename Superclass::OutputType;
/** CoordRep type alias support */
using CoordinateType = TCoordRep;
using CoordRepType = CoordinateType;
/** 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. */
OutputType
Evaluate(const PointType & point) const override
{
const ContinuousIndexType index =
this->GetInputImage()->template TransformPhysicalPointToContinuousIndex<TCoordRep>(point);
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. */
OutputType
EvaluateAtContinuousIndex(const ContinuousIndexType & index) const override = 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. */
OutputType
EvaluateAtIndex(const IndexType & index) const override
{
OutputType output;
PixelType input = this->GetInputImage()->GetPixel(index);
for (unsigned int k = 0; k < this->GetInputImage()->GetNumberOfComponentsPerPixel(); ++k)
{
output[k] = static_cast<double>(input[k]);
}
return (output);
}
protected:
VectorInterpolateImageFunction() = default;
~VectorInterpolateImageFunction() override = default;
};
} // end namespace itk
#endif
|
