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/*=========================================================================
*
* Copyright NumFOCUS
*
* 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
*
* https://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.
*
*=========================================================================*/
#include "itkMinimumMaximumImageFilter.h"
#include "itkSimpleFilterWatcher.h"
#include "itkMacro.h"
#include "itkMath.h"
#include "itkTestingMacros.h"
int
itkMinimumMaximumImageFilterTest(int argc, char * argv[])
{
if (argc != 2)
{
std::cerr << "Missing parameters." << std::endl;
std::cerr << "Usage: " << itkNameOfTestExecutableMacro(argv) << " numberOfStreamDivisions" << std::endl;
return EXIT_FAILURE;
}
using SizeType = itk::Size<3>;
using ImageType = itk::Image<float, 3>;
using MinMaxFilterType = itk::MinimumMaximumImageFilter<ImageType>;
/* 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
auto image = ImageType::New();
ImageType::RegionType region;
region.SetSize(size);
image->SetRegions(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
auto filter = MinMaxFilterType::New();
ITK_EXERCISE_BASIC_OBJECT_METHODS(filter, MinimumMaximumImageFilter, ImageSink);
itk::SimpleFilterWatcher watcher(filter);
const auto numberOfStreamDivisions = static_cast<unsigned int>(std::stoi(argv[1]));
filter->SetNumberOfStreamDivisions(numberOfStreamDivisions);
ITK_TEST_SET_GET_VALUE(numberOfStreamDivisions, filter->GetNumberOfStreamDivisions());
filter->SetInput(image);
filter->Update();
// Return minimum of intensity
float minimumResult = filter->GetMinimum();
std::cout << "The Minimum intensity value is : " << minimumResult << std::endl;
if (itk::Math::NotExactlyEquals(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 (itk::Math::NotExactlyEquals(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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