ITK  5.3.0
Insight Toolkit
SphinxExamples/src/Filtering/ImageIntensity/ComputerMagInVectorImageToMakeMagImage/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 "itkVectorImage.h"
int
main(int argc, char * argv[])
{
// Verify command line arguments
if (argc < 3)
{
std::cerr << "Usage: " << std::endl;
std::cerr << argv[0] << " inputImageFile outputImageFile" << std::endl;
return EXIT_FAILURE;
}
// Parse command line arguments
std::string inputFileName = argv[1];
std::string outputFileName = argv[2];
// Setup types
using VectorImageType = itk::VectorImage<float, 2>;
using UnsignedCharImageType = itk::Image<unsigned char, 2>;
const auto input = itk::ReadImage<VectorImageType>(inputFileName);
VectorMagnitudeFilterType::Pointer magnitudeFilter = VectorMagnitudeFilterType::New();
magnitudeFilter->SetInput(input);
// To write the magnitude image file, we should rescale the gradient values
// to a reasonable range
rescaleFilterType::Pointer rescaler = rescaleFilterType::New();
rescaler->SetOutputMinimum(0);
rescaler->SetOutputMaximum(255);
rescaler->SetInput(magnitudeFilter->GetOutput());
itk::WriteImage(rescaler->GetOutput(), outputFileName);
return EXIT_SUCCESS;
}
itk::VectorMagnitudeImageFilter
Take an image of vectors as input and produce an image with the magnitude of those vectors.
Definition: itkVectorMagnitudeImageFilter.h:71
itk::VectorImage
Templated n-dimensional vector image class.
Definition: itkImageAlgorithm.h:29
itkImageFileReader.h
itkImage.h
itkVectorImage.h
itkRescaleIntensityImageFilter.h
itkVectorMagnitudeImageFilter.h
itkImageFileWriter.h
itk::RescaleIntensityImageFilter
Applies a linear transformation to the intensity levels of the input Image.
Definition: itkRescaleIntensityImageFilter.h:147
itk::Image
Templated n-dimensional image class.
Definition: itkImage.h:88
itk::WriteImage
ITK_TEMPLATE_EXPORT void WriteImage(TImagePointer &&image, const std::string &filename, bool compress=false)
Definition: itkImageFileWriter.h:254