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/*=========================================================================
Program: Visualization Toolkit
Module: $RCSfile: vtkImageSeparableConvolution.h,v $
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.
=========================================================================*/
// .NAME vtkImageSeparableConvolution - 3 1D convolutions on an image
// .SECTION Description
// vtkImageSeparableConvolution performs a convolution along the X, Y,
// and Z axes of an image, based on the three different 1D convolution
// kernels. The kernels must be of odd size, and are considered to be
// centered at (int)((kernelsize - 1) / 2.0 ). If a kernel is NULL,
// that dimension is skipped. This filter is designed to efficiently
// convolve separable filters that can be decomposed into 1 or more 1D
// convolutions. It also handles arbitrarly large kernel sizes, and
// uses edge replication to handle boundaries.
#ifndef __vtkImageSeparableConvolution_h
#define __vtkImageSeparableConvolution_h
#include "vtkImageDecomposeFilter.h"
class vtkFloatArray;
class VTK_IMAGING_EXPORT vtkImageSeparableConvolution : public vtkImageDecomposeFilter
{
public:
static vtkImageSeparableConvolution *New();
vtkTypeRevisionMacro(vtkImageSeparableConvolution,vtkImageDecomposeFilter);
// Set the X convolution kernel, a null value indicates no convolution to
// be done. The kernel must be of odd length
virtual void SetXKernel(vtkFloatArray*);
vtkGetObjectMacro ( XKernel, vtkFloatArray );
// Set the Y convolution kernel, a null value indicates no convolution to
// be done The kernel must be of odd length
virtual void SetYKernel(vtkFloatArray*);
vtkGetObjectMacro ( YKernel, vtkFloatArray );
// Set the Z convolution kernel, a null value indicates no convolution to
// be done The kernel must be of odd length
virtual void SetZKernel(vtkFloatArray*);
vtkGetObjectMacro ( ZKernel, vtkFloatArray );
void PrintSelf(ostream& os, vtkIndent indent);
// Description:
// Overload standard modified time function. If kernel arrays are modified,
// then this object is modified as well.
unsigned long int GetMTime();
protected:
vtkImageSeparableConvolution();
~vtkImageSeparableConvolution();
vtkFloatArray* XKernel;
vtkFloatArray* YKernel;
vtkFloatArray* ZKernel;
virtual int IterativeRequestData(vtkInformation*,
vtkInformationVector**,
vtkInformationVector*);
virtual int IterativeRequestInformation(vtkInformation* in,
vtkInformation* out);
virtual int IterativeRequestUpdateExtent(vtkInformation* in,
vtkInformation* out);
private:
vtkImageSeparableConvolution(const vtkImageSeparableConvolution&); // Not implemented.
void operator=(const vtkImageSeparableConvolution&); // Not implemented.
};
#endif
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