ITK  5.3.0
Insight Toolkit
SphinxExamples/src/Filtering/ImageIntensity/ConvertRGBImageToGrayscaleImage/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[])
{
if (argc != 3)
{
std::cerr << "Usage: " << std::endl;
std::cerr << argv[0];
std::cerr << "<InputFileName> <OutputFileName>";
std::cerr << std::endl;
return EXIT_FAILURE;
}
constexpr unsigned int Dimension = 2;
using ComponentType = unsigned char;
using InputPixelType = itk::RGBPixel<ComponentType>;
using InputImageType = itk::Image<InputPixelType, Dimension>;
const auto input = itk::ReadImage<InputImageType>(argv[1]);
using OutputPixelType = unsigned char;
using OutputImageType = itk::Image<OutputPixelType, Dimension>;
FilterType::Pointer filter = FilterType::New();
filter->SetInput(input);
try
{
itk::WriteImage(filter->GetOutput(), argv[2]);
}
catch (itk::ExceptionObject & error)
{
std::cerr << "Error: " << error << std::endl;
return EXIT_FAILURE;
}
return EXIT_SUCCESS;
}
itk::RGBPixel
Represent Red, Green and Blue components for color images.
Definition: itkRGBPixel.h:58
itkRGBToLuminanceImageFilter.h
itkImageFileReader.h
itkImage.h
itkImageFileWriter.h
itk::RGBToLuminanceImageFilter
Converts an RGB image into a grayscale image.
Definition: itkRGBToLuminanceImageFilter.h:65
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