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/*=========================================================================
Program: Insight Segmentation & Registration Toolkit
Module: $RCSfile: itkVectorRescaleIntensityImageFilterTest.cxx,v $
Language: C++
Date: $Date: 2006-01-15 04:28:36 $
Version: $Revision: 1.4 $
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 <iostream>
#include "itkImage.h"
#include "itkImageRegionIterator.h"
#include "itkVectorRescaleIntensityImageFilter.h"
int itkVectorRescaleIntensityImageFilterTest(int, char* [] )
{
std::cout << "itkVectorRescaleIntensityImageFilterTest Start" << std::endl;
const unsigned int VectorDimension = 3;
typedef itk::Vector< int, VectorDimension > InputPixelType;
typedef itk::Vector< float, VectorDimension > OutputPixelType;
const unsigned int ImageDimension = 3;
typedef itk::Image< InputPixelType, ImageDimension > InputImageType;
typedef itk::Image< OutputPixelType,ImageDimension > OutputImageType;
InputImageType::Pointer inputImage = InputImageType::New();
InputImageType::RegionType region;
InputImageType::SizeType size;
InputImageType::IndexType index;
size.Fill( 20 );
index.Fill( 0 );
region.SetIndex( index );
region.SetSize( size );
InputPixelType pixelValue;
pixelValue[0] = 10;
pixelValue[1] = 20;
pixelValue[2] = 30;
inputImage->SetRegions(region);
inputImage->Allocate();
inputImage->FillBuffer( pixelValue );
typedef itk::VectorRescaleIntensityImageFilter<
InputImageType,
OutputImageType> FilterType;
FilterType::Pointer filter = FilterType::New();
filter->SetInput( inputImage );
const double desiredMaximum = 1.0;
filter->SetOutputMaximumMagnitude( desiredMaximum );
try
{
filter->Update();
filter->SetFunctor(filter->GetFunctor());
}
catch (itk::ExceptionObject& e)
{
std::cerr << "Exception detected: " << e;
return -1;
}
OutputImageType::ConstPointer outputImage = filter->GetOutput();
typedef itk::ImageRegionConstIterator< OutputImageType > IteratorType;
IteratorType ot( outputImage, outputImage->GetBufferedRegion() );
ot.GoToBegin();
const double tolerance = 1e-3;
const double factor = desiredMaximum / static_cast< double >( pixelValue.GetNorm() );
while( !ot.IsAtEnd() )
{
const OutputPixelType outputValue = ot.Get();
for(unsigned int k=0; k < VectorDimension; k++)
{
if (outputValue[k] != 0)
{
if( fabs( outputValue[k] - pixelValue[k] * factor ) / outputValue[k] - 1.0 > tolerance )
{
std::cerr << "Test FAILED !" << std::endl;
std::cerr << "Input Pixel Value = " << pixelValue << std::endl;
std::cerr << "Output Pixel Value = " << outputValue << std::endl;
}
}
}
++ot;
}
std::cout << "Test PASSED ! " << std::endl;
return EXIT_SUCCESS;
}
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