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/*=========================================================================
Program: ORFEO Toolbox
Language: C++
Date: $Date$
Version: $Revision$
Copyright (c) Centre National d'Etudes Spatiales. All rights reserved.
See OTBCopyright.txt 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.
=========================================================================*/
#include "otbImage.h"
#include "otbVectorImage.h"
#include "otbGridResampleImageFilter.h"
#include "itkResampleImageFilter.h"
#include "itkGaussianImageSource.h"
#include "itkMersenneTwisterRandomVariateGenerator.h"
#include "itkIdentityTransform.h"
#include "otbDifferenceImageFilter.h"
#include "itkStreamingImageFilter.h"
#include "otbImageFileWriter.h"
int otbGridResampleImageFilter(int itkNotUsed(argc), char * itkNotUsed(argv)[])
{
// This test is only to check that filter builds with VectorImage
// too
typedef otb::VectorImage<double> VectorImageType;
typedef otb::GridResampleImageFilter<VectorImageType,VectorImageType> VectorFilterType;
VectorFilterType::Pointer vectorFilter = VectorFilterType::New();
typedef otb::Image<double> ImageType;
typedef otb::GridResampleImageFilter<ImageType,ImageType> FilterType;
FilterType::Pointer filter = FilterType::New();
typedef itk::ResampleImageFilter<ImageType,ImageType> RefFilterType;
RefFilterType::Pointer refFilter = RefFilterType::New();
// We will resample a random image with GridResampleImageFilter and
// ResampleImageFilter, and check that outputs are the same
typedef itk::Statistics::MersenneTwisterRandomVariateGenerator RandomGeneratorType;
RandomGeneratorType::Pointer randomGenerator = RandomGeneratorType::GetInstance();
ImageType::SizeType size;
size.Fill(1000);
ImageType::RegionType region;
region.SetSize(size);
ImageType::Pointer randomImage = ImageType::New();
randomImage->SetRegions(region);
randomImage->Allocate();
typedef itk::ImageRegionIterator<ImageType> IteratorType;
IteratorType iter(randomImage,region);
for (iter.GoToBegin() ; !iter.IsAtEnd() ; ++iter)
{
iter.Set(randomGenerator->GetUniformVariate(0.0, 1.0) * 1000);
}
filter->SetInput(randomImage);
refFilter->SetInput(randomImage);
typedef itk::IdentityTransform<double,2> IdentityTransformType;
IdentityTransformType::Pointer idTransform = IdentityTransformType::New();
refFilter->SetTransform(idTransform);
ImageType::SpacingType spacing;
spacing[0]=0.12;
spacing[1]=-0.19;
ImageType::PointType origin;
origin[0]=11;
origin[1]=17;
ImageType::SizeType outSize;
outSize.Fill(103);
filter->SetOutputSize(outSize);
filter->SetOutputOrigin(origin);
filter->SetOutputSpacing(spacing);
refFilter->SetSize(outSize);
refFilter->SetOutputOrigin(origin);
refFilter->SetOutputSpacing(spacing);
typedef otb::DifferenceImageFilter<ImageType,ImageType> ComparisonFilterType;
typedef itk::StreamingImageFilter<ImageType,ImageType> StreamingFilterType;
StreamingFilterType::Pointer streamingRef = StreamingFilterType::New();
streamingRef->SetInput(refFilter->GetOutput());
streamingRef->SetNumberOfStreamDivisions(10);
StreamingFilterType::Pointer streaming = StreamingFilterType::New();
streaming->SetInput(filter->GetOutput());
streaming->SetNumberOfStreamDivisions(10);
ComparisonFilterType::Pointer comparisonFilter = ComparisonFilterType::New();
comparisonFilter->SetValidInput(streamingRef->GetOutput());
comparisonFilter->SetTestInput(streaming->GetOutput());
comparisonFilter->SetDifferenceThreshold(1e-9);
comparisonFilter->Update();
unsigned int nbPixelsWithDiff = comparisonFilter->GetNumberOfPixelsWithDifferences();
std::cout<<"Number of pixels with differences: "<<nbPixelsWithDiff<<std::endl;
if(nbPixelsWithDiff)
{
std::cerr<<"Output of itk::GridResampleImageFilter does not match output of itk::ResampleImageFilter with same parameters"<<std::endl;
typedef otb::ImageFileWriter<ImageType> WriterType;
WriterType::Pointer writer = WriterType::New();
writer->SetInput(comparisonFilter->GetOutput());
writer->SetFileName("otbGridResampleImageFilterTestOutput.tif");
writer->Update();
writer = WriterType::New();
writer->SetInput(streamingRef->GetOutput());
writer->SetFileName("otbGridResampleImageFilterTestOutput1.tif");
writer->Update();
writer = WriterType::New();
writer->SetInput(streaming->GetOutput());
writer->SetFileName("otbGridResampleImageFilterTestOutput2.tif");
writer->Update();
return EXIT_FAILURE;
}
return EXIT_SUCCESS;
}
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