ITK  5.3.0
Insight Toolkit
SphinxExamples/src/Filtering/ImageIntensity/AbsValueOfImage/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 UnsignedCharImageType = itk::Image<unsigned char, 2>;
using FloatImageType = itk::Image<float, 2>;
static void
CreateImage(FloatImageType::Pointer image);
int
main(int, char *[])
{
FloatImageType::Pointer image = FloatImageType::New();
CreateImage(image);
// Take the absolute value of the image
AbsImageFilterType::Pointer absFilter = AbsImageFilterType::New();
absFilter->SetInput(image);
#ifdef ENABLE_QUICKVIEW
QuickView viewer;
viewer.AddImage<FloatImageType>(image);
viewer.AddImage<FloatImageType>(absFilter->GetOutput());
viewer.Visualize();
#endif
return EXIT_SUCCESS;
}
void
CreateImage(FloatImageType::Pointer image)
{
// Create an image with negative values
start[0] = 0;
start[1] = 0;
size[0] = 200;
size[1] = 300;
region.SetSize(size);
region.SetIndex(start);
image->SetRegions(region);
image->Allocate();
itk::ImageRegionIterator<FloatImageType> imageIterator(image, region);
while (!imageIterator.IsAtEnd())
{
imageIterator.Set(imageIterator.GetIndex()[0] - imageIterator.GetIndex()[1]);
++imageIterator;
}
}
itk::GTest::TypedefsAndConstructors::Dimension2::SizeType
ImageBaseType::SizeType SizeType
Definition: itkGTestTypedefsAndConstructors.h:49
itkImage.h
itk::ImageRegionIterator
A multi-dimensional iterator templated over image type that walks a region of pixels.
Definition: itkImageRegionIterator.h:80
itk::GTest::TypedefsAndConstructors::Dimension2::IndexType
ImageBaseType::IndexType IndexType
Definition: itkGTestTypedefsAndConstructors.h:50
itkAbsImageFilter.h
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::AbsImageFilter
Computes the absolute value of each pixel.
Definition: itkAbsImageFilter.h:72
itkRescaleIntensityImageFilter.h
itkImageFileWriter.h
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:86
QuickView::Visualize
void Visualize(bool interact=true)