ITK  5.2.0
Insight Toolkit
SphinxExamples/src/Filtering/BinaryMathematicalMorphology/ThinImage/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"
using ImageType = itk::Image<unsigned char, 2>;
static void
WriteImage(const ImageType::Pointer image, const std::string & fileName);
static void
CreateImage(ImageType::Pointer image);
int
main(int argc, char * argv[])
{
ImageType::Pointer image = ImageType::New();
if (argc == 2)
{
using ImageReader = itk::ImageFileReader<ImageType>;
ImageReader::Pointer reader = ImageReader::New();
std::string fileName = argv[1];
reader->SetFileName(fileName);
reader->Update();
image = reader->GetOutput();
}
else
{
CreateImage(image);
WriteImage(image, "input.png");
}
using BinaryThinningImageFilterType = itk::BinaryThinningImageFilter<ImageType, ImageType>;
BinaryThinningImageFilterType::Pointer binaryThinningImageFilter = BinaryThinningImageFilterType::New();
binaryThinningImageFilter->SetInput(image);
binaryThinningImageFilter->Update();
// Rescale the image so that it can be seen (the output is 0 and 1, we want 0 and 255)
RescaleType::Pointer rescaler = RescaleType::New();
rescaler->SetInput(binaryThinningImageFilter->GetOutput());
rescaler->SetOutputMinimum(0);
rescaler->SetOutputMaximum(255);
rescaler->Update();
WriteImage(rescaler->GetOutput(), "output.png");
return EXIT_SUCCESS;
}
void
CreateImage(ImageType::Pointer image)
{
// Create an image
start.Fill(0);
size.Fill(100);
ImageType::RegionType region(start, size);
image->SetRegions(region);
image->Allocate();
image->FillBuffer(0);
// Draw a 5 pixel wide line
for (unsigned int i = 20; i < 80; ++i)
{
for (unsigned int j = 50; j < 55; ++j)
{
index[0] = i;
index[1] = j;
image->SetPixel(index, 255);
}
}
}
void
WriteImage(const ImageType::Pointer image, const std::string & fileName)
{
using WriterType = itk::ImageFileWriter<ImageType>;
WriterType::Pointer writer = WriterType::New();
writer->SetFileName(fileName);
writer->SetInput(image);
writer->Update();
}
itkBinaryThinningImageFilter.h
itk::Index
Represent a n-dimensional index in a n-dimensional image.
Definition: itkIndex.h:66
itkImageFileReader.h
itk::GTest::TypedefsAndConstructors::Dimension2::SizeType
ImageBaseType::SizeType SizeType
Definition: itkGTestTypedefsAndConstructors.h:49
itkImage.h
itk::Index::Fill
void Fill(IndexValueType value)
Definition: itkIndex.h:270
itk::Size::Fill
void Fill(SizeValueType value)
Definition: itkSize.h:211
itk::ImageFileReader
Data source that reads image data from a single file.
Definition: itkImageFileReader.h:75
itk::GTest::TypedefsAndConstructors::Dimension2::IndexType
ImageBaseType::IndexType IndexType
Definition: itkGTestTypedefsAndConstructors.h:50
itk::ImageFileWriter
Writes image data to a single file.
Definition: itkImageFileWriter.h:87
itk::GTest::TypedefsAndConstructors::Dimension2::RegionType
ImageBaseType::RegionType RegionType
Definition: itkGTestTypedefsAndConstructors.h:54
itkRescaleIntensityImageFilter.h
itkImageFileWriter.h
itk::BinaryThinningImageFilter
This filter computes one-pixel-wide edges of the input image.
Definition: itkBinaryThinningImageFilter.h:62
itk::RescaleIntensityImageFilter
Applies a linear transformation to the intensity levels of the input Image.
Definition: itkRescaleIntensityImageFilter.h:154
itk::Image
Templated n-dimensional image class.
Definition: itkImage.h:86
fileName
std::string fileName
Definition: itkTestDriverInclude.h:118