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/*=========================================================================
*
* Copyright Insight Software Consortium
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0.txt
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*=========================================================================*/
// The example takes an image (say MRA image), computes the vesselness measure
// of the image using the HessianRecursiveGaussianImageFilter and the
// Hessian3DToVesselnessMeasureImageFilter. The goal is to detect bright tubular
// structures in the image.
#include "itkHessian3DToVesselnessMeasureImageFilter.h"
#include "itkHessianRecursiveGaussianImageFilter.h"
#include "itkImageFileReader.h"
#include "itkImageFileWriter.h"
int main( int argc, char *argv[] )
{
if( argc < 3 )
{
std::cerr << "Usage: inputImage outputImage [sigma] [alpha_1] [alpha_2]" << std::endl;
}
const unsigned int Dimension = 3;
typedef double InputPixelType;
typedef float OutputPixelType;
typedef itk::Image< InputPixelType, Dimension > InputImageType;
typedef itk::Image< OutputPixelType, Dimension > OutputImageType;
typedef itk::HessianRecursiveGaussianImageFilter<
InputImageType > HessianFilterType;
typedef itk::Hessian3DToVesselnessMeasureImageFilter<
OutputPixelType > VesselnessMeasureFilterType;
typedef itk::ImageFileReader< InputImageType > ReaderType;
typedef itk::ImageFileWriter< OutputImageType > WriterType;
HessianFilterType::Pointer hessianFilter = HessianFilterType::New();
VesselnessMeasureFilterType::Pointer vesselnessFilter =
VesselnessMeasureFilterType::New();
ReaderType::Pointer reader = ReaderType::New();
WriterType::Pointer writer = WriterType::New();
reader->SetFileName( argv[1] );
hessianFilter->SetInput( reader->GetOutput() );
if( argc >= 4 )
{
hessianFilter->SetSigma( static_cast< double >(atof(argv[3])) );
}
vesselnessFilter->SetInput( hessianFilter->GetOutput() );
writer->SetInput( vesselnessFilter->GetOutput() );
writer->SetFileName( argv[2] );
if( argc >= 5 )
{
vesselnessFilter->SetAlpha1( static_cast< double >(atof(argv[4])));
}
if( argc >= 6 )
{
vesselnessFilter->SetAlpha2( static_cast< double >(atof(argv[5])));
}
writer->Update();
return EXIT_SUCCESS;
}
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