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89 lines
3.4 KiB
89 lines
3.4 KiB
/*=========================================================================
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Program: Visualization Toolkit
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Module: $RCSfile: vtkExtractVOI.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 vtkExtractVOI - select piece (e.g., volume of interest) and/or subsample structured points dataset
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// .SECTION Description
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// vtkExtractVOI is a filter that selects a portion of an input structured
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// points dataset, or subsamples an input dataset. (The selected portion of
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// interested is referred to as the Volume Of Interest, or VOI.) The output of
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// this filter is a structured points dataset. The filter treats input data
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// of any topological dimension (i.e., point, line, image, or volume) and can
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// generate output data of any topological dimension.
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//
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// To use this filter set the VOI ivar which are i-j-k min/max indices that
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// specify a rectangular region in the data. (Note that these are 0-offset.)
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// You can also specify a sampling rate to subsample the data.
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//
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// Typical applications of this filter are to extract a slice from a volume
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// for image processing, subsampling large volumes to reduce data size, or
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// extracting regions of a volume with interesting data.
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// .SECTION See Also
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// vtkGeometryFilter vtkExtractGeometry vtkExtractGrid
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#ifndef __vtkExtractVOI_h
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#define __vtkExtractVOI_h
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#include "vtkImageAlgorithm.h"
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class VTK_IMAGING_EXPORT vtkExtractVOI : public vtkImageAlgorithm
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{
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public:
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vtkTypeRevisionMacro(vtkExtractVOI,vtkImageAlgorithm);
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void PrintSelf(ostream& os, vtkIndent indent);
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// Description:
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// Construct object to extract all of the input data.
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static vtkExtractVOI *New();
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// Description:
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// Specify i-j-k (min,max) pairs to extract. The resulting structured points
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// dataset can be of any topological dimension (i.e., point, line, image,
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// or volume).
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vtkSetVector6Macro(VOI,int);
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vtkGetVectorMacro(VOI,int,6);
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// Description:
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// Set the sampling rate in the i, j, and k directions. If the rate is >
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// 1, then the resulting VOI will be subsampled representation of the
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// input. For example, if the SampleRate=(2,2,2), every other point will
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// be selected, resulting in a volume 1/8th the original size.
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vtkSetVector3Macro(SampleRate, int);
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vtkGetVectorMacro(SampleRate, int, 3);
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protected:
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vtkExtractVOI();
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~vtkExtractVOI() {};
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virtual int RequestUpdateExtent(vtkInformation*,
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vtkInformationVector**,
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vtkInformationVector*);
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virtual int RequestInformation (vtkInformation*,
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vtkInformationVector**,
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vtkInformationVector*);
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virtual int RequestData(vtkInformation* request,
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vtkInformationVector** inputVector,
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vtkInformationVector* outputVector);
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int VOI[6];
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int SampleRate[3];
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private:
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vtkExtractVOI(const vtkExtractVOI&); // Not implemented.
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void operator=(const vtkExtractVOI&); // Not implemented.
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};
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#endif
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