1 /*=========================================================================
2  *
3  *  Copyright Insight Software Consortium
4  *
5  *  Licensed under the Apache License, Version 2.0 (the "License");
6  *  you may not use this file except in compliance with the License.
7  *  You may obtain a copy of the License at
8  *
9  *         http://www.apache.org/licenses/LICENSE-2.0.txt
10  *
11  *  Unless required by applicable law or agreed to in writing, software
12  *  distributed under the License is distributed on an "AS IS" BASIS,
13  *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14  *  See the License for the specific language governing permissions and
15  *  limitations under the License.
16  *
17  *=========================================================================*/
18 #include "itkComplexToComplexFFTImageFilter.h"
19 
20 #ifndef itkVnlComplexToComplexFFTImageFilter_h
21 #define itkVnlComplexToComplexFFTImageFilter_h
22 
23 namespace itk
24 {
25 /** \class VnlComplexToComplexFFTImageFilter
26  *
27  * \brief VNL based complex to complex Fast Fourier Transform.
28  *
29  * This filter requires input images with sizes which are a power of two.
30  *
31  * \ingroup FourierTransform
32  * \ingroup ITKFFT
33  *
34  * \sa ComplexToComplexFFTImageFilter
35  * \sa FFTWComplexToComplexFFTImageFilter
36  * \sa VnlForwardFFTImageFilter
37  * \sa VnlInverseFFTImageFilter
38  */
39 template< typename TImage >
40 class ITK_TEMPLATE_EXPORT VnlComplexToComplexFFTImageFilter:
41   public ComplexToComplexFFTImageFilter< TImage >
42 {
43 public:
44   ITK_DISALLOW_COPY_AND_ASSIGN(VnlComplexToComplexFFTImageFilter);
45 
46   /** Standard class type aliases. */
47   using Self = VnlComplexToComplexFFTImageFilter;
48   using Superclass = ComplexToComplexFFTImageFilter< TImage >;
49   using Pointer = SmartPointer< Self >;
50   using ConstPointer = SmartPointer< const Self >;
51 
52   using ImageType = TImage;
53   using PixelType = typename ImageType::PixelType;
54   using InputImageType = typename Superclass::InputImageType;
55   using OutputImageType = typename Superclass::OutputImageType;
56   using OutputImageRegionType = typename OutputImageType::RegionType;
57 
58   /** Method for creation through the object factory. */
59   itkNewMacro(Self);
60 
61   /** Run-time type information (and related methods). */
62   itkTypeMacro(VnlComplexToComplexFFTImageFilter,
63                ComplexToComplexFFTImageFilter);
64 
65   static constexpr unsigned int ImageDimension = ImageType::ImageDimension;
66 
67 protected:
68   VnlComplexToComplexFFTImageFilter();
69   ~VnlComplexToComplexFFTImageFilter() override = default;
70 
71   void BeforeThreadedGenerateData() override;
72   void DynamicThreadedGenerateData(const OutputImageRegionType & outputRegionForThread) override;
73 };
74 
75 } // end namespace itk
76 
77 #ifndef ITK_MANUAL_INSTANTIATION
78 #include "itkVnlComplexToComplexFFTImageFilter.hxx"
79 #endif
80 
81 #endif //itkVnlComplexToComplexFFTImageFilter_h
82