/*========================================================================= Program: Visualization Toolkit Module: vtkImageIdealLowPass.h Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen All rights reserved. See Copyright.txt or http://www.kitware.com/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 notice for more information. =========================================================================*/ /** * @class vtkImageIdealLowPass * @brief Simple frequency domain band pass. * * This filter only works on an image after it has been converted to * frequency domain by a vtkImageFFT filter. A vtkImageRFFT filter * can be used to convert the output back into the spatial domain. * vtkImageIdealLowPass just sets a portion of the image to zero. The result * is an image with a lot of ringing. Input and Output must be doubles. * Dimensionality is set when the axes are set. Defaults to 2D on X and Y * axes. * * @sa * vtkImageButterworthLowPass vtkImageIdealHighPass vtkImageFFT vtkImageRFFT */ #ifndef vtkImageIdealLowPass_h #define vtkImageIdealLowPass_h #include "vtkImagingFourierModule.h" // For export macro #include "vtkThreadedImageAlgorithm.h" class VTKIMAGINGFOURIER_EXPORT vtkImageIdealLowPass : public vtkThreadedImageAlgorithm { public: static vtkImageIdealLowPass* New(); vtkTypeMacro(vtkImageIdealLowPass, vtkThreadedImageAlgorithm); void PrintSelf(ostream& os, vtkIndent indent) override; //@{ /** * Set/Get the cutoff frequency for each axis. * The values are specified in the order X, Y, Z, Time. * Units: Cycles per world unit (as defined by the data spacing). */ vtkSetVector3Macro(CutOff, double); void SetCutOff(double v) { this->SetCutOff(v, v, v); } void SetXCutOff(double v); void SetYCutOff(double v); void SetZCutOff(double v); vtkGetVector3Macro(CutOff, double); double GetXCutOff() { return this->CutOff[0]; } double GetYCutOff() { return this->CutOff[1]; } double GetZCutOff() { return this->CutOff[2]; } //@} protected: vtkImageIdealLowPass(); ~vtkImageIdealLowPass() override {} double CutOff[3]; void ThreadedRequestData(vtkInformation* request, vtkInformationVector** inputVector, vtkInformationVector* outputVector, vtkImageData*** inData, vtkImageData** outData, int outExt[6], int id) override; private: vtkImageIdealLowPass(const vtkImageIdealLowPass&) = delete; void operator=(const vtkImageIdealLowPass&) = delete; }; #endif