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78 lines
2.8 KiB
78 lines
2.8 KiB
/*=========================================================================
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Program: Visualization Toolkit
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Module: $RCSfile: vtkImageGradient.h,v $
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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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// .NAME vtkImageGradient - Computes the gradient vector.
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// .SECTION Description
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// vtkImageGradient computes the gradient vector of an image. The
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// vector results are stored as scalar components. The Dimensionality
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// determines whether to perform a 2d or 3d gradient. The default is
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// two dimensional XY gradient. OutputScalarType is always
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// double. Gradient is computed using central differences.
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#ifndef __vtkImageGradient_h
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#define __vtkImageGradient_h
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#include "vtkThreadedImageAlgorithm.h"
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class VTK_IMAGING_EXPORT vtkImageGradient : public vtkThreadedImageAlgorithm
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{
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public:
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static vtkImageGradient *New();
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vtkTypeRevisionMacro(vtkImageGradient,vtkThreadedImageAlgorithm);
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void PrintSelf(ostream& os, vtkIndent indent);
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// Description:
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// Determines how the input is interpreted (set of 2d slices ...)
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vtkSetClampMacro(Dimensionality,int,2,3);
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vtkGetMacro(Dimensionality,int);
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// Description:
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// Get/Set whether to handle boundaries. If enabled, boundary
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// pixels are treated as duplicated so that central differencing
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// works for the boundary pixels. If disabled, the output whole
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// extent of the image is reduced by one pixel.
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vtkSetMacro(HandleBoundaries, int);
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vtkGetMacro(HandleBoundaries, int);
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vtkBooleanMacro(HandleBoundaries, int);
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protected:
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vtkImageGradient();
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~vtkImageGradient() {};
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int HandleBoundaries;
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int Dimensionality;
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virtual int RequestInformation (vtkInformation*,
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vtkInformationVector**,
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vtkInformationVector*);
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virtual int RequestUpdateExtent(vtkInformation*,
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vtkInformationVector**,
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vtkInformationVector*);
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void ThreadedRequestData(vtkInformation*,
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vtkInformationVector**,
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vtkInformationVector*,
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vtkImageData*** inData,
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vtkImageData** outData,
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int outExt[6],
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int threadId);
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private:
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vtkImageGradient(const vtkImageGradient&); // Not implemented.
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void operator=(const vtkImageGradient&); // Not implemented.
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};
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#endif
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