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
|
/*=========================================================================
*
* 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 itkFullToHalfHermitianImageFilter_h
#define itkFullToHalfHermitianImageFilter_h
#include "itkImageToImageFilter.h"
#include "itkSimpleDataObjectDecorator.h"
namespace itk
{
/**
* \class FullToHalfHermitianImageFilter
*
* \brief Reduces the size of a full complex image produced from a
* forward discrete Fourier transform of a real image to only the
* non-redundant half of the image.
*
* In particular, this filter reduces the size of the image in the
* first dimension to \f$\lfloor N/2 \rfloor + 1 \f$.
*
* \ingroup FourierTransform
*
* \sa HalfToFullHermitianImageFilter
* \sa ForwardFFTImageFilter
* \sa InverseFFTImageFilter
* \sa RealToHalfHermitianForwardFFTImageFilter
* \sa HalfHermitianToRealInverseFFTImageFilter
* \ingroup ITKFFT
*/
template <typename TInputImage>
class ITK_TEMPLATE_EXPORT FullToHalfHermitianImageFilter : public ImageToImageFilter<TInputImage, TInputImage>
{
public:
ITK_DISALLOW_COPY_AND_MOVE(FullToHalfHermitianImageFilter);
/** Standard class type aliases. */
using InputImageType = TInputImage;
using InputImagePixelType = typename InputImageType::PixelType;
using InputImageIndexType = typename InputImageType::IndexType;
using InputImageIndexValueType = typename InputImageType::IndexValueType;
using InputImageSizeType = typename InputImageType::SizeType;
using InputImageSizeValueType = typename InputImageType::SizeValueType;
using InputImageRegionType = typename InputImageType::RegionType;
using OutputImageType = TInputImage;
using OutputImagePixelType = typename OutputImageType::PixelType;
using OutputImageIndexType = typename OutputImageType::IndexType;
using OutputImageIndexValueType = typename OutputImageType::IndexValueType;
using OutputImageSizeType = typename OutputImageType::SizeType;
using OutputImageSizeValueType = typename OutputImageType::SizeValueType;
using OutputImageRegionType = typename OutputImageType::RegionType;
using Self = FullToHalfHermitianImageFilter;
using Superclass = ImageToImageFilter<TInputImage, TInputImage>;
using Pointer = SmartPointer<Self>;
using ConstPointer = SmartPointer<const Self>;
/** Method for creation through the object factory. */
itkNewMacro(Self);
/** \see LightObject::GetNameOfClass() */
itkOverrideGetNameOfClassMacro(FullToHalfHermitianImageFilter);
/** Extract the dimensionality of the input and output images. */
static constexpr unsigned int ImageDimension = TInputImage::ImageDimension;
/** Get whether the actual X dimension of the image is odd or not in the full
* representation */
itkGetDecoratedOutputMacro(ActualXDimensionIsOdd, bool);
protected:
FullToHalfHermitianImageFilter();
~FullToHalfHermitianImageFilter() override = default;
void
DynamicThreadedGenerateData(const OutputImageRegionType & outputRegionForThread) override;
/** The output is a different size from the input. */
void
GenerateOutputInformation() override;
/** This class requires the entire input. */
void
GenerateInputRequestedRegion() override;
itkSetDecoratedOutputMacro(ActualXDimensionIsOdd, bool);
};
} // end namespace itk
#ifndef ITK_MANUAL_INSTANTIATION
# include "itkFullToHalfHermitianImageFilter.hxx"
#endif
#endif // itkFullToHalfHermitianImageFilter_h
|
