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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.
*
*=========================================================================*/
#include "itkDivideOrZeroOutImageFilter.h"
#include "itkImageRegionConstIteratorWithIndex.h"
#include "itkNumericTraits.h"
#include "itkMath.h"
int itkDivideOrZeroOutImageFilterTest(int, char* [])
{
const unsigned int Dimension = 3;
typedef float PixelType;
typedef itk::Image< PixelType, Dimension > ImageType;
typedef itk::DivideOrZeroOutImageFilter< ImageType > DivideFilterType;
ImageType::SizeType size = {{10, 12, 14}};
ImageType::Pointer numeratorImage = ImageType::New();
numeratorImage->SetRegions( size );
numeratorImage->Allocate();
numeratorImage->FillBuffer( 1.0f );
ImageType::Pointer denominatorImage = ImageType::New();
denominatorImage->SetRegions( size );
denominatorImage->Allocate();
// Set input test values
denominatorImage->FillBuffer( 1.0f );
ImageType::IndexType zeroIndex = {{4, 5, 6}};
denominatorImage->SetPixel( zeroIndex, 0.0f );
// Instantiate and run the filter
DivideFilterType::Pointer divider = DivideFilterType::New();
divider->SetInput1( numeratorImage );
divider->SetInput2( denominatorImage );
divider->InPlaceOn();
divider->UpdateLargestPossibleRegion();
ImageType::RegionType region = divider->GetOutput()->GetLargestPossibleRegion();
itk::ImageRegionConstIteratorWithIndex< ImageType > iter( divider->GetOutput(), region );
for (; !iter.IsAtEnd(); ++iter)
{
ImageType::IndexType index = iter.GetIndex();
if ( index != zeroIndex )
{
if ( iter.Get() != 1.0f )
{
std::cerr << "Incorrect value. Got " << iter.Get() << ", expected 1.0"
<< std::endl;
return EXIT_FAILURE;
}
}
else
{
if ( iter.Get() != 0.0f )
{
std::cerr << "Incorrect value when denominator is below threshold. "
<< "Got " << iter.Get() << ", expected 0.0" << std::endl;
return EXIT_FAILURE;
}
}
}
divider->Print( std::cout );
divider->SetThreshold( 2.0f );
if ( divider->GetThreshold() != 2.0f )
{
std::cerr << "Threshold not set correctly. Got " << divider->GetThreshold()
<< ", expected 2.0." << std::endl;
return EXIT_FAILURE;
}
divider->SetConstant( -2.3f );
if ( itk::Math::NotExactlyEquals(divider->GetConstant(), -2.3f) )
{
std::cerr << "Constant not set correctly. Got " << divider->GetConstant()
<< ", expected -2.3 ." << std::endl;
return EXIT_FAILURE;
}
return EXIT_SUCCESS;
}
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