ITK  5.3.0
Insight Toolkit
SphinxExamples/src/Filtering/ImageGradient/ComputeGradientMagnitude/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"
int
main(int argc, char * argv[])
{
// Verify command line arguments
if (argc != 3)
{
std::cerr << "Usage: " << std::endl;
std::cerr << argv[0] << " <InputImage> <OutputImage" << std::endl;
return EXIT_FAILURE;
}
const char * inputFileName = argv[1];
const char * outputFileName = argv[2];
constexpr unsigned int Dimension = 2;
using InputPixelType = unsigned char;
using InputImageType = itk::Image<InputPixelType, Dimension>;
using OutputPixelType = float;
using OutputImageType = itk::Image<OutputPixelType, Dimension>;
const auto input = itk::ReadImage<InputImageType>(inputFileName);
// Create and setup a gradient filter
FilterType::Pointer gradientFilter = FilterType::New();
gradientFilter->SetInput(input);
try
{
itk::WriteImage(gradientFilter->GetOutput(), outputFileName);
}
catch (itk::ExceptionObject & error)
{
std::cerr << "Error: " << error << std::endl;
return EXIT_FAILURE;
}
return EXIT_SUCCESS;
}
itk::GradientMagnitudeImageFilter
Computes the gradient magnitude of an image region at each pixel.
Definition: itkGradientMagnitudeImageFilter.h:42
itkImageFileReader.h
itkImage.h
itkImageFileWriter.h
itk::Image
Templated n-dimensional image class.
Definition: itkImage.h:88
itk::GTest::TypedefsAndConstructors::Dimension2::Dimension
constexpr unsigned int Dimension
Definition: itkGTestTypedefsAndConstructors.h:44
itk::WriteImage
ITK_TEMPLATE_EXPORT void WriteImage(TImagePointer &&image, const std::string &filename, bool compress=false)
Definition: itkImageFileWriter.h:254
itkGradientMagnitudeImageFilter.h