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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 <iostream>
#include "itkCropImageFilter.h"
int itkCropImageFilter3DTest(int, char* [] )
{
typedef itk::Image<unsigned short,3> ImageType;
ImageType::RegionType region;
const unsigned int dimSize(8);
ImageType::RegionType::SizeType size = {{dimSize,dimSize,dimSize}};
ImageType::RegionType::IndexType index = {{0,0,0}};
region.SetSize(size);
region.SetIndex(index);
ImageType::Pointer image = ImageType::New();
image->SetRegions(region);
image->Allocate();
itk::ImageRegionIterator<ImageType> it(image,region);
for(unsigned short i = 0; !it.IsAtEnd(); ++it, ++i)
{
it.Set(i);
}
itk::CropImageFilter<ImageType,ImageType>::Pointer cropFilter =
itk::CropImageFilter<ImageType,ImageType>::New();
cropFilter->SetInput(image);
ImageType::SizeType extractSize = {{1,1,1}};
// set crop size
cropFilter->SetBoundaryCropSize(extractSize);
// redundant, SetBoundaryCropSize sets both upper and lower;
cropFilter->SetUpperBoundaryCropSize(extractSize);
cropFilter->SetLowerBoundaryCropSize(extractSize);
try
{
cropFilter->Update();
}
catch( itk::ExceptionObject & err )
{
std::cerr << "Error: " << err << std::endl;
return EXIT_FAILURE;
}
ImageType::Pointer croppedImage = cropFilter->GetOutput();
// check size of cropped image
ImageType::RegionType::SizeType croppedSize =
croppedImage->GetLargestPossibleRegion().GetSize();
for(unsigned i = 0; i < 3; i++)
{
if(croppedSize[i] != dimSize-2)
{
std::cerr << "Unexpected cropped Image size[" << i
<< "] = " << croppedSize[i] << ". Expected "
<< dimSize << std::endl;
return EXIT_FAILURE;
}
}
ImageType::RegionType subRegion;
ImageType::RegionType::SizeType subSize = {{ dimSize-2, dimSize-2, dimSize-2 }};
ImageType::RegionType::IndexType subIndex = {{ 1,1,1 }};
subRegion.SetSize(subSize);
subRegion.SetIndex(subIndex);
itk::ImageRegionIterator<ImageType> it1(image,subRegion);
itk::ImageRegionIterator<ImageType> it2(croppedImage,croppedImage->GetLargestPossibleRegion());
for(; !it1.IsAtEnd() && !it2.IsAtEnd(); ++it1, ++it2)
{
if(it1.Get() != it2.Get())
{
std::cerr << "Expected Pixel " << it1.Get()
<< " saw " << it2.Get() << " instead."
<< std::endl;
return EXIT_FAILURE;
}
}
return EXIT_SUCCESS;
}
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