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/*=========================================================================
Program: Insight Segmentation & Registration Toolkit
Module: itkNaryMaximumImageFilterTest.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 "itkImage.h"
#include "itkNaryMaximumImageFilter.h"
#include "itkImageRegionIteratorWithIndex.h"
// Create a namespace in order to avoid conflicts with other tests.
namespace NaryMaximumImageFilterTest
{
// Define the dimension of the images
const unsigned int Dimension = 3;
// Declare the types of the images
typedef itk::Image<float, Dimension> InputImageType;
typedef itk::Image<float, Dimension> OutputImageType;
// Declare the type of the index to access images
typedef itk::Index<Dimension> IndexType;
// Declare the type of the size
typedef itk::Size<Dimension> SizeType;
// Declare the type of the Region
typedef itk::ImageRegion<Dimension> RegionType;
// Declare the type of the Iterators
typedef itk::ImageRegionIteratorWithIndex< InputImageType > InImageIteratorType;
typedef itk::ImageRegionIteratorWithIndex< OutputImageType > OutImageIteratorType;
// Declare the type for the ADD filter
typedef itk::NaryMaximumImageFilter<
InputImageType,
OutputImageType > FilterType;
// Function for image initialization
void InitializeImage( InputImageType * image, double value )
{
InputImageType::Pointer inputImage( image );
// Define their size, and start index
SizeType size;
size[0] = 2;
size[1] = 2;
size[2] = 2;
IndexType start;
start.Fill(0);
RegionType region;
region.SetIndex( start );
region.SetSize( size );
inputImage->SetLargestPossibleRegion( region );
inputImage->SetBufferedRegion( region );
inputImage->SetRequestedRegion( region );
inputImage->Allocate();
InImageIteratorType it( inputImage,
inputImage->GetRequestedRegion() );
it.GoToBegin();
while( !it.IsAtEnd() )
{
it.Set( value );
++it;
}
}
// Function for image printing
void PrintImage( InputImageType * image, const char *)
{
// Create an iterator for going through the image
InImageIteratorType it( image,
image->GetRequestedRegion() );
it.GoToBegin();
// Print the content of the image
//std::cout << text << std::endl;
while( !it.IsAtEnd() )
{
std::cout << it.Get() << std::endl;
++it;
}
}
} // end namespace NaryMaximumImageFilterTest
int itkNaryMaximumImageFilterTest(int, char* [] )
{
// It is safe to open the namespace here because
// the symbols will not be exposed outside this function
using namespace NaryMaximumImageFilterTest;
// Create two images
InputImageType::Pointer inputImageA = InputImageType::New();
InputImageType::Pointer inputImageB = InputImageType::New();
static const int minValue = 12;
static const int maxValue = 13;
InitializeImage( inputImageA, minValue );
InitializeImage( inputImageB, maxValue );
PrintImage( inputImageA, "Input image A" );
PrintImage( inputImageB, "Input image B" );
// Create an ADD Filter
FilterType::Pointer filter = FilterType::New();
// Connect the input images
filter->SetInput( 0, inputImageA );
filter->SetInput( 1, inputImageB );
// Get the Smart Pointer to the Filter Output
OutputImageType::Pointer outputImage = filter->GetOutput();
// Execute the filter
filter->Update();
filter->SetFunctor(filter->GetFunctor());
PrintImage( outputImage, "Resulting image 1" );
OutImageIteratorType it( outputImage,
outputImage->GetRequestedRegion() );
it.GoToBegin();
while( !it.IsAtEnd() )
{
if (it.Get() != maxValue)
{
std::cerr << "Test Failed!" << std::endl;
return -1;
}
++it;
}
// now try it the other way
InitializeImage( inputImageA, minValue );
InitializeImage( inputImageB, maxValue );
filter->SetInput( 1, inputImageA );
filter->SetInput( 0, inputImageB );
filter->InPlaceOff(); // let's make sure this works too, while we're at it...
filter->Update();
PrintImage( outputImage, "Resulting image 2" );
OutImageIteratorType it2( outputImage,
outputImage->GetRequestedRegion() );
it2.GoToBegin();
while( !it2.IsAtEnd() )
{
if (it2.Get() != maxValue)
{
std::cerr << "Test Failed!" << std::endl;
return -1;
}
++it2;
}
std::cerr << "Test Passed!" << std::endl;
// All objects should be automatically destroyed at this point
return EXIT_SUCCESS;
}
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