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/*=========================================================================
Program: Insight Segmentation & Registration Toolkit
Module: itkMinimumMaximumImageFilterTest.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 "itkMinimumMaximumImageFilter.h"
#include "itkSize.h"
#include "itkFilterWatcher.h"
int
itkMinimumMaximumImageFilterTest(int , char *[] )
{
typedef itk::Size<3> SizeType;
typedef itk::Image<float, 3> ImageType;
typedef itk::MinimumMaximumImageFilter<ImageType> MinMaxFilterType;
/* Define the image size and physical coordinates */
SizeType size = {{20, 20, 20}};
double origin [3] = { 0.0, 0.0, 0.0};
double spacing[3] = { 1, 1 , 1};
int flag = 0; /* Did this test program work? */
std::cout << "Testing Minimum and Maximum Image Calulator:\n";
// Allocate a simple test image
ImageType::Pointer image = ImageType::New();
ImageType::RegionType region;
region.SetSize(size);
image->SetLargestPossibleRegion(region);
image->SetRequestedRegion(region);
image->SetBufferedRegion(region);
image->Allocate();
// Set origin and spacing of physical coordinates
image->SetOrigin(origin);
image->SetSpacing(spacing);
float minimum = -52;
float maximum = -10;
// Initialize the image contents with the minimum value
itk::Index<3> index;
for (int slice = 0; slice < 20; slice++)
{
index[2] = slice;
for (int row = 0; row <20; row++)
{
index[1] = row;
for (int col = 0; col < 20; col++)
{
index[0] = col;
image->SetPixel(index, minimum);
}
}
}
// Set voxel (10,10,10) to maximum value
index[0] = 10;
index[1] = 10;
index[2] = 10;
image->SetPixel(index, maximum);
// Create and initialize the filter
MinMaxFilterType::Pointer filter = MinMaxFilterType::New();
FilterWatcher watcher(filter);
filter->SetInput(image);
filter->Update();
// Return minimum of intensity
float minimumResult = filter->GetMinimum();
std::cout << "The Minimum intensity value is : " << minimumResult << std::endl;
if(minimumResult != minimum)
{
std::cout << "Minimum Value is wrong : " << minimumResult ;
std::cout << " != " << minimum << std::endl;
flag = 1;
}
// Return maximum of intensity
float maximumResult = filter->GetMaximum();
std::cout << "The Maximum intensity value is : " << maximumResult << std::endl;
if(maximumResult != maximum)
{
std::cout << "Maximum Value is wrong : " << maximumResult ;
std::cout << " != " << maximum << std::endl;
flag = 2;
}
// Return results of test
if (flag != 0)
{
std::cout << "*** Some tests failed" << std::endl;
return flag;
}
else
{
std::cout << "All tests successfully passed" << std::endl;
return EXIT_SUCCESS;
}
}
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