ITK  5.2.0
Insight Toolkit
SphinxExamples/src/Filtering/ImageGrid/WarpAnImageUsingADeformationField/Code.cxx
/*=========================================================================
*
* 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
*
* 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 "itkImage.h"
#include "itkVector.h"
int
main(int argc, char * argv[])
{
if (argc < 4)
{
std::cerr << "Usage: \n" << argv[0] << "<InputFileName> <DisplacementFieldFileName> <OutputFileName>" << std::endl;
return EXIT_FAILURE;
}
const char * inputFileName = argv[1];
const char * displacementFieldFileName = argv[2];
const char * outputFileName = argv[3];
constexpr unsigned int Dimension = 2;
using VectorComponentType = float;
using DisplacementFieldType = itk::Image<VectorPixelType, Dimension>;
using PixelType = unsigned char;
using ReaderType = itk::ImageFileReader<ImageType>;
using WriterType = itk::ImageFileWriter<ImageType>;
ReaderType::Pointer reader = ReaderType::New();
reader->SetFileName(inputFileName);
FieldReaderType::Pointer fieldReader = FieldReaderType::New();
fieldReader->SetFileName(displacementFieldFileName);
fieldReader->Update();
DisplacementFieldType::ConstPointer deformationField = fieldReader->GetOutput();
FilterType::Pointer filter = FilterType::New();
InterpolatorType::Pointer interpolator = InterpolatorType::New();
filter->SetInterpolator(interpolator);
filter->SetOutputSpacing(deformationField->GetSpacing());
filter->SetOutputOrigin(deformationField->GetOrigin());
filter->SetOutputDirection(deformationField->GetDirection());
filter->SetDisplacementField(deformationField);
filter->SetInput(reader->GetOutput());
WriterType::Pointer writer = WriterType::New();
writer->SetInput(filter->GetOutput());
writer->SetFileName(outputFileName);
try
{
writer->Update();
}
catch (itk::ExceptionObject & error)
{
std::cerr << "Error: " << error << std::endl;
return EXIT_FAILURE;
}
return EXIT_SUCCESS;
}
itk::Vector
A templated class holding a n-Dimensional vector.
Definition: itkVector.h:62
itkImageFileReader.h
itkImage.h
itkWarpImageFilter.h
itk::ImageFileReader
Data source that reads image data from a single file.
Definition: itkImageFileReader.h:75
itk::LinearInterpolateImageFunction
Linearly interpolate an image at specified positions.
Definition: itkLinearInterpolateImageFunction.h:50
itk::ImageFileWriter
Writes image data to a single file.
Definition: itkImageFileWriter.h:87
itkImageFileWriter.h
itk::WarpImageFilter
Warps an image using an input displacement field.
Definition: itkWarpImageFilter.h:85
itkVector.h
itk::Image
Templated n-dimensional image class.
Definition: itkImage.h:86
itk::GTest::TypedefsAndConstructors::Dimension2::Dimension
constexpr unsigned int Dimension
Definition: itkGTestTypedefsAndConstructors.h:44