ITK  5.3.0
Insight Toolkit
SphinxExamples/src/Filtering/ImageIntensity/InvertImage/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"
#ifdef ENABLE_QUICKVIEW
# include "QuickView.h"
#endif
using ImageType = itk::Image<unsigned char, 2>;
static void
CreateImage(ImageType::Pointer image);
int
main(int argc, char * argv[])
{
ImageType::Pointer image = ImageType::New();
std::stringstream desc;
CreateImage(image);
unsigned int maximum = 255;
if (argc > 1)
{
image = itk::ReadImage<ImageType>(argv[1]);
desc << itksys::SystemTools::GetFilenameName(argv[1]);
if (argc > 2)
{
maximum = std::stoi(argv[2]);
}
}
else
{
CreateImage(image);
desc << "Synthetic image";
maximum = 50;
}
using InvertIntensityImageFilterType = itk::InvertIntensityImageFilter<ImageType>;
InvertIntensityImageFilterType::Pointer invertIntensityFilter = InvertIntensityImageFilterType::New();
invertIntensityFilter->SetInput(image);
invertIntensityFilter->SetMaximum(maximum);
#ifdef ENABLE_QUICKVIEW
QuickView viewer;
viewer.AddImage(image.GetPointer(), true, desc.str());
std::stringstream desc2;
desc2 << "InvertIntensity, maximum = " << maximum;
viewer.AddImage(invertIntensityFilter->GetOutput(), true, desc2.str());
viewer.Visualize();
#endif
return EXIT_SUCCESS;
}
void
CreateImage(ImageType::Pointer image)
{
// Create an image
start[0] = 0;
start[1] = 0;
unsigned int NumRows = 200;
unsigned int NumCols = 300;
size[0] = NumRows;
size[1] = NumCols;
region.SetSize(size);
region.SetIndex(start);
image->SetRegions(region);
image->Allocate();
// Make a square
for (unsigned int r = 40; r < 100; r++)
{
for (unsigned int c = 40; c < 100; c++)
{
pixelIndex[0] = r;
pixelIndex[1] = c;
image->SetPixel(pixelIndex, 50);
}
}
}
itk::InvertIntensityImageFilter
Invert the intensity of an image.
Definition: itkInvertIntensityImageFilter.h:90
itkImageFileReader.h
itk::GTest::TypedefsAndConstructors::Dimension2::SizeType
ImageBaseType::SizeType SizeType
Definition: itkGTestTypedefsAndConstructors.h:49
itkImage.h
itk::GTest::TypedefsAndConstructors::Dimension2::IndexType
ImageBaseType::IndexType IndexType
Definition: itkGTestTypedefsAndConstructors.h:50
QuickView.h
QuickView::AddImage
void AddImage(TImage *, bool FlipVertical=true, std::string Description="")
itk::GTest::TypedefsAndConstructors::Dimension2::RegionType
ImageBaseType::RegionType RegionType
Definition: itkGTestTypedefsAndConstructors.h:54
itk::Size::SetSize
void SetSize(const SizeValueType val[VDimension])
Definition: itkSize.h:179
QuickView
A convenient class to render itk images with vtk.
Definition: QuickView.h:111
itk::Image
Templated n-dimensional image class.
Definition: itkImage.h:88
QuickView::Visualize
void Visualize(bool interact=true)
itkInvertIntensityImageFilter.h