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/*=========================================================================
Copyright (c) Kitware, Inc.
All rights reserved.
See Copyright.txt or http://www.kitware.com/VolViewCopyright.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.
=========================================================================*/
/* Computes the gradient magnitude using finite differences localy */
#include "vvITKFilterModule.h"
#include "itkGradientMagnitudeImageFilter.h"
template <class InputPixelType>
class GradientMagnitudeRunner
{
public:
typedef InputPixelType PixelType;
typedef itk::Image< PixelType, 3 > ImageType;
typedef itk::GradientMagnitudeImageFilter< ImageType,
ImageType > FilterType;
typedef VolView::PlugIn::FilterModule< FilterType > ModuleType;
public:
GradientMagnitudeRunner() {}
void Execute( vtkVVPluginInfo *info, vtkVVProcessDataStruct *pds )
{
ModuleType module;
module.SetPluginInfo( info );
module.SetUpdateMessage("Computing the gradient magnitude...");
// Execute the filter
module.ProcessData( pds );
}
};
static int ProcessData(void *inf, vtkVVProcessDataStruct *pds)
{
vtkVVPluginInfo *info = (vtkVVPluginInfo *)inf;
const unsigned int Dimension = 3;
try
{
switch( info->InputVolumeScalarType )
{
case VTK_CHAR:
{
GradientMagnitudeRunner<signed char> runner;
runner.Execute( info, pds );
break;
}
case VTK_UNSIGNED_CHAR:
{
GradientMagnitudeRunner<unsigned char> runner;
runner.Execute( info, pds );
break;
}
case VTK_SHORT:
{
GradientMagnitudeRunner<signed short> runner;
runner.Execute( info, pds );
break;
}
case VTK_UNSIGNED_SHORT:
{
GradientMagnitudeRunner<unsigned short> runner;
runner.Execute( info, pds );
break;
}
case VTK_INT:
{
GradientMagnitudeRunner<signed int> runner;
runner.Execute( info, pds );
break;
}
case VTK_UNSIGNED_INT:
{
GradientMagnitudeRunner<unsigned int> runner;
runner.Execute( info, pds );
break;
}
case VTK_LONG:
{
GradientMagnitudeRunner<signed long> runner;
runner.Execute( info, pds );
break;
}
case VTK_UNSIGNED_LONG:
{
GradientMagnitudeRunner<unsigned long> runner;
runner.Execute( info, pds );
break;
}
case VTK_FLOAT:
{
GradientMagnitudeRunner<float> runner;
runner.Execute( info, pds );
break;
}
case VTK_DOUBLE:
{
GradientMagnitudeRunner<double> runner;
runner.Execute( info, pds );
break;
}
}
}
catch( itk::ExceptionObject & except )
{
info->SetProperty( info, VVP_ERROR, except.what() );
return -1;
}
return 0;
}
static int UpdateGUI(void *inf)
{
vtkVVPluginInfo *info = (vtkVVPluginInfo *)inf;
info->SetProperty(info, VVP_REQUIRED_Z_OVERLAP, "0");
info->OutputVolumeScalarType = info->InputVolumeScalarType;
info->OutputVolumeNumberOfComponents =
info->InputVolumeNumberOfComponents;
memcpy(info->OutputVolumeDimensions,info->InputVolumeDimensions,
3*sizeof(int));
memcpy(info->OutputVolumeSpacing,info->InputVolumeSpacing,
3*sizeof(float));
memcpy(info->OutputVolumeOrigin,info->InputVolumeOrigin,
3*sizeof(float));
// if multi component we have 1 scalar for input and 1 scalar for output
if (info->InputVolumeNumberOfComponents > 1)
{
int sizeReq = 2*info->InputVolumeScalarSize;
char tmps[500];
sprintf(tmps,"%i",sizeReq);
info->SetProperty(info, VVP_PER_VOXEL_MEMORY_REQUIRED, tmps);
}
else
{
// otherwise no memory is required
info->SetProperty(info, VVP_PER_VOXEL_MEMORY_REQUIRED, "0");
}
return 1;
}
extern "C" {
void VV_PLUGIN_EXPORT vvITKGradientMagnitudeInit(vtkVVPluginInfo *info)
{
vvPluginVersionCheck();
// setup information that never changes
info->ProcessData = ProcessData;
info->UpdateGUI = UpdateGUI;
info->SetProperty(info, VVP_NAME, "Gradient Magnitude (ITK)");
info->SetProperty(info, VVP_GROUP, "Utility");
info->SetProperty(info, VVP_TERSE_DOCUMENTATION,
"Gradient Magnitude");
info->SetProperty(info, VVP_FULL_DOCUMENTATION,
"This filter computes the magnitude if the gradient using finite differences. Basically by convolving with masks of type [-1,0,1].");
info->SetProperty(info, VVP_SUPPORTS_IN_PLACE_PROCESSING, "0");
info->SetProperty(info, VVP_SUPPORTS_PROCESSING_PIECES, "0");
info->SetProperty(info, VVP_NUMBER_OF_GUI_ITEMS, "0");
info->SetProperty(info, VVP_REQUIRED_Z_OVERLAP, "0");
info->SetProperty(info, VVP_PER_VOXEL_MEMORY_REQUIRED, "0");
info->SetProperty(info, VVP_REQUIRES_SERIES_INPUT, "0");
info->SetProperty(info, VVP_SUPPORTS_PROCESSING_SERIES_BY_VOLUMES, "0");
info->SetProperty(info, VVP_PRODUCES_OUTPUT_SERIES, "0");
info->SetProperty(info, VVP_PRODUCES_PLOTTING_OUTPUT, "0");
}
}
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