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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 "itkBinShrinkImageFilter.h"
#include "itkPhysicalPointImageSource.h"
#include "itkVectorImage.h"
#include "itkImageRegionConstIterator.h"
namespace
{
// This function checks that all values in an image are equivalent to
// the physical point of the image.
template <typename TImageType>
bool CheckValueIsPhysicalPoint( const TImageType *img )
{
typedef itk::ImageRegionConstIterator<TImageType> IteratorType;
IteratorType it(img, img->GetBufferedRegion() );
bool match = true;
typename TImageType::PointType pt;
img->TransformIndexToPhysicalPoint( it.GetIndex(), pt );
while( !it.IsAtEnd() )
{
for ( unsigned int i = 0; i < TImageType::ImageDimension; ++i )
{
img->TransformIndexToPhysicalPoint( it.GetIndex(), pt );
if ( !itk::Math::FloatAlmostEqual(pt[i], it.Get()[i]) )
{
typename TImageType::PointType::VectorType diff;
for( unsigned int j = 0; j < TImageType::ImageDimension; ++j )
{
diff[j] = pt[j] - it.Get()[j];
}
std::cout << "Index: " << it.GetIndex() << " Point: " << pt << " Value: " << it.Get() << " Difference:" <<
diff << std::endl;
match = false;
}
}
++it;
}
return match;
}
}
int itkBinShrinkImageFilterTest2( int , char *[] )
{
const unsigned int ImageDimension = 2;
typedef itk::Vector<double, ImageDimension> PixelType;
typedef itk::Image<PixelType, ImageDimension> ImageType;
typedef itk::PhysicalPointImageSource<ImageType> SourceType;
SourceType::Pointer source = SourceType::New();
SourceType::SizeValueType size[] = {512,509};
source->SetSize( size );
float origin[] = {1.1, 2.22};
source->SetOrigin( origin );
unsigned int factors[] = {1,1};
bool pass = true;
for( unsigned int xf = 1; xf < 5; ++xf )
{
factors[0] = xf;
for( unsigned int yf = 1; yf < 5; ++yf )
{
factors[1] = yf;
std::cout << "Testing with shrink factors:" << xf << " " << yf << std::endl;
typedef itk::BinShrinkImageFilter<ImageType, ImageType> FilterType;
FilterType::Pointer shrink = FilterType::New();
shrink->SetInput(source->GetOutput() );
std::cout << "Testing with shrink factors:" << xf << " " << yf << std::endl;
shrink->SetShrinkFactors( factors );
shrink->UpdateLargestPossibleRegion();
if ( !CheckValueIsPhysicalPoint( shrink->GetOutput() ) )
{
pass = false;
std::cout << "== Failed with shrink factors " << factors[0] << " " << factors[1] << " == " << std::endl;
}
}
}
if ( pass )
{
return EXIT_SUCCESS;
}
else
{
return EXIT_FAILURE;
}
}
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