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/*=========================================================================
*
* Copyright NumFOCUS
*
* 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
*
* https://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 "itkImage.h"
#include "itkImageFileReader.h"
#include "itkImageFileWriter.h"
#include "itkMatrix.h"
#include "itkResampleImageFilter.h"
int
main(int argc, char * argv[])
{
if (argc < 7)
{
std::cerr << "Usage: " << std::endl;
std::cerr << argv[0] << " inputImageFile outputImageFile";
std::cerr << " direction cosines" << std::endl;
return EXIT_FAILURE;
}
constexpr unsigned int Dimension = 2;
using InputPixelType = unsigned char;
using OutputPixelType = unsigned char;
using InputImageType = itk::Image<InputPixelType, Dimension>;
using OutputImageType = itk::Image<OutputPixelType, Dimension>;
using ReaderType = itk::ImageFileReader<InputImageType>;
using WriterType = itk::ImageFileWriter<OutputImageType>;
auto reader = ReaderType::New();
auto writer = WriterType::New();
reader->SetFileName(argv[1]);
writer->SetFileName(argv[2]);
using FilterType =
itk::ResampleImageFilter<InputImageType, OutputImageType>;
auto filter = FilterType::New();
filter->SetDefaultPixelValue(0);
{
// pixel spacing in millimeters
const double spacing[Dimension] = { 1.0, 1.0 };
filter->SetOutputSpacing(spacing);
}
{
// space coordinate of origin
const double origin[Dimension] = { 0.0, 0.0 };
filter->SetOutputOrigin(origin);
}
OutputImageType::DirectionType direction;
direction(0, 0) = std::stoi(argv[3]);
direction(1, 0) = std::stoi(argv[4]);
direction(0, 1) = std::stoi(argv[5]);
direction(1, 1) = std::stoi(argv[6]);
filter->SetOutputDirection(direction);
InputImageType::SizeType size;
size[0] = 300; // number of pixels along X
size[1] = 300; // number of pixels along Y
filter->SetSize(size);
filter->SetInput(reader->GetOutput());
writer->SetInput(filter->GetOutput());
writer->Update();
return EXIT_SUCCESS;
}
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