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/*=========================================================================
Program: Insight Segmentation & Registration Toolkit
Module: itkVectorConnectedComponentImageFilterTest.cxx
Language: C++
Date: $Date$
Version: $Revision$
Copyright (c) Insight Software Consortium. All rights reserved.
See ITKCopyright.txt or http://www.itk.org/HTML/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 notices for more information.
=========================================================================*/
#if defined(_MSC_VER)
#pragma warning ( disable : 4786 )
#endif
#include <fstream>
#include "itkVectorConnectedComponentImageFilter.h"
#include "itkRelabelComponentImageFilter.h"
#include "itkImageFileWriter.h"
#include "itkImageRegionIterator.h"
#include "itkVector.h"
#include "itkTextOutput.h"
int itkVectorConnectedComponentImageFilterTest(int argc, char* argv[] )
{
if( argc < 1 )
{
std::cerr << "Missing Parameters " << std::endl;
std::cerr << "Usage: " << argv[0];
std::cerr << " outputImage" << std::endl;
return EXIT_FAILURE;
}
// Comment the following if you want to use the itk text output window
itk::OutputWindow::SetInstance(itk::TextOutput::New());
const unsigned int Dimension = 2;
typedef itk::Vector<float,Dimension> PixelType;
typedef unsigned long OutputPixelType;
typedef unsigned char LabelPixelType;
typedef itk::Image<PixelType, Dimension> ImageType;
typedef itk::Image<OutputPixelType, Dimension> OutputImageType;
typedef itk::Image<LabelPixelType, Dimension> LabelImageType;
// create an image of vectors
ImageType::Pointer image = ImageType::New();
ImageType::RegionType region;
ImageType::SizeType size; size.Fill(100);
ImageType::IndexType index; index.Fill(0);
region.SetSize(size);
region.SetIndex(index);
image->SetRegions( region );
image->Allocate();
size = region.GetSize();
index = region.GetIndex();
unsigned int width = size[0];
size[0] = width / 2;
size[1] = width / 2;
index[0] = 0;
index[1] = 0;
region.SetSize(size);
region.SetIndex(index);
{
PixelType pixel;
pixel[0] = 1; pixel[1] = 0;
std::cout << "pixel: " << pixel << std::endl;
itk::ImageRegionIterator<ImageType> it(image, region);
std::cout << region;
it.GoToBegin();
while (!it.IsAtEnd())
{
it.Set(pixel);
++it;
}
}
index[0] = width/2;
index[1] = 0;
region.SetSize(size);
region.SetIndex(index);
{
PixelType pixel;
pixel[0] = 0; pixel[1] = -1;
std::cout << "pixel: " << pixel << std::endl;
std::cout << region;
itk::ImageRegionIterator<ImageType> it(image, region);
it.GoToBegin();
while (!it.IsAtEnd())
{
it.Set(pixel);
++it;
}
}
index[0] = 0;
index[1] = width/2;
region.SetSize(size);
region.SetIndex(index);
{
PixelType pixel;
pixel[0] = -1; pixel[1] = 0;
std::cout << "pixel: " << pixel << std::endl;
std::cout << region;
itk::ImageRegionIterator<ImageType> it(image, region);
it.GoToBegin();
while (!it.IsAtEnd())
{
it.Set(pixel);
++it;
}
}
index[0] = width/2;
index[1] = width/2;
region.SetSize(size);
region.SetIndex(index);
{
PixelType pixel;
pixel[0] = 0; pixel[1] = 1;
std::cout << "pixel: " << pixel << std::endl;
std::cout << region;
itk::ImageRegionIterator<ImageType> it(image, region);
it.GoToBegin();
while (!it.IsAtEnd())
{
it.Set(pixel);
++it;
}
}
index[0] = width/4;
index[1] = width/4;
size[0] = width/2;
size[1] = width/2;
region.SetSize(size);
region.SetIndex(index);
{
PixelType pixel;
pixel[0] = 1; pixel[1] = 1;
pixel.Normalize();
std::cout << "pixel: " << pixel << std::endl;
std::cout << region;
itk::ImageRegionIterator<ImageType> it(image, region);
it.GoToBegin();
while (!it.IsAtEnd())
{
it.Set(pixel);
++it;
}
}
typedef itk::VectorConnectedComponentImageFilter<
ImageType,
OutputImageType > VectorFilterType;
VectorFilterType::Pointer filter = VectorFilterType::New();
filter->SetInput( image );
filter->SetDistanceThreshold(.01);
typedef itk::RelabelComponentImageFilter< OutputImageType, LabelImageType > RelabelComponentType;
RelabelComponentType::Pointer relabel = RelabelComponentType::New();
relabel->SetInput( filter->GetOutput() );
typedef itk::ImageFileWriter< LabelImageType > WriterType;
WriterType::Pointer writer = WriterType::New();
try
{
writer->SetInput (relabel->GetOutput());
writer->SetFileName( argv[1] );
writer->Update();
filter->SetFunctor(filter->GetFunctor());
}
catch( itk::ExceptionObject & excep )
{
std::cerr << "Exception caught !" << std::endl;
std::cerr << excep << std::endl;
return EXIT_FAILURE;
}
return EXIT_SUCCESS;
}
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