55 lines
1.9 KiB
C
55 lines
1.9 KiB
C
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/*=========================================================================
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Program: Visualization Toolkit
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Module: vtkImageFourierCenter.h
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Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
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All rights reserved.
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See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
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This software is distributed WITHOUT ANY WARRANTY; without even
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the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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PURPOSE. See the above copyright notice for more information.
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=========================================================================*/
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/**
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* @class vtkImageFourierCenter
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* @brief Shifts constant frequency to center for
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* display.
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*
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* Is used for dispaying images in frequency space. FFT converts spatial
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* images into frequency space, but puts the zero frequency at the origin.
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* This filter shifts the zero frequency to the center of the image.
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* Input and output are assumed to be doubles.
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*/
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#ifndef vtkImageFourierCenter_h
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#define vtkImageFourierCenter_h
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#include "vtkImageDecomposeFilter.h"
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#include "vtkImagingFourierModule.h" // For export macro
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class VTKIMAGINGFOURIER_EXPORT vtkImageFourierCenter : public vtkImageDecomposeFilter
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{
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public:
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static vtkImageFourierCenter* New();
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vtkTypeMacro(vtkImageFourierCenter, vtkImageDecomposeFilter);
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void PrintSelf(ostream& os, vtkIndent indent) override;
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protected:
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vtkImageFourierCenter();
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~vtkImageFourierCenter() override = default;
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int IterativeRequestUpdateExtent(vtkInformation* in, vtkInformation* out) override;
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void ThreadedRequestData(vtkInformation* vtkNotUsed(request),
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vtkInformationVector** vtkNotUsed(inputVector), vtkInformationVector* outputVector,
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vtkImageData*** inDataVec, vtkImageData** outDataVec, int outExt[6], int threadId) override;
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private:
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vtkImageFourierCenter(const vtkImageFourierCenter&) = delete;
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void operator=(const vtkImageFourierCenter&) = delete;
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};
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#endif
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