ITK  5.1.0
Insight Toolkit
SphinxExamples/src/Filtering/ImageFilterBase/CustomOperationToCorrespondingPixelsInTwoImages/Code.cxx
/*=========================================================================
*
* Copyright Insight Software Consortium
*
* 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 "itkVectorImage.h"
#include "itkVector.h"
using ImageType = itk::Image<float, 2>;
static void
CreateImage(ImageType::Pointer image);
namespace Functor
{
template <class TPixel>
class MySquaredDifference
{
public:
MySquaredDifference() = default;
~MySquaredDifference() = default;
bool
operator!=(const MySquaredDifference &) const
{
return false;
}
bool
operator==(const MySquaredDifference & other) const
{
return !(*this != other);
}
inline TPixel
operator()(const TPixel & A, const TPixel & B) const
{
const auto dA = static_cast<double>(A);
const auto dB = static_cast<double>(B);
const double diff = dA - dB;
return static_cast<TPixel>(diff * diff);
}
};
} // namespace Functor
int
main(int, char *[])
{
ImageType::Pointer image1 = ImageType::New();
CreateImage(image1);
image1->FillBuffer(2);
ImageType::Pointer image2 = ImageType::New();
CreateImage(image2);
image2->FillBuffer(5);
using FilterType =
FilterType::Pointer filter = FilterType::New();
filter->SetInput1(image1);
filter->SetInput2(image2);
filter->Update();
itk::Index<2> pixelIndex;
pixelIndex.Fill(0);
ImageType::PixelType input1PixelValue = image1->GetPixel(pixelIndex);
ImageType::PixelType input2PixelValue = image2->GetPixel(pixelIndex);
ImageType::PixelType outputPixelValue = filter->GetOutput()->GetPixel(pixelIndex);
std::cout << "pixel1 was = " << input1PixelValue << std::endl;
std::cout << "pixel2 was = " << input2PixelValue << std::endl;
std::cout << "output is = " << outputPixelValue << std::endl;
return EXIT_SUCCESS;
}
void
CreateImage(ImageType::Pointer image)
{
start.Fill(0);
size.Fill(10);
ImageType::RegionType region(start, size);
image->SetRegions(region);
image->Allocate();
}
itk::Index
Represent a n-dimensional index in a n-dimensional image.
Definition: itkIndex.h:66
itkRigid2DTransform.h
itk::ImageToImageFilterDetail::operator!=
bool operator!=(const ImageRegionCopier< D1, D2 > &c1, const ImageRegionCopier< D1, D2 > &c2)
Definition: itkImageToImageFilterDetail.h:355
itkVariableLengthVector.h
itk::GTest::TypedefsAndConstructors::Dimension2::SizeType
ImageBaseType::SizeType SizeType
Definition: itkGTestTypedefsAndConstructors.h:49
itk::BinaryFunctorImageFilter
Implements pixel-wise generic operation of two images, or of an image and a constant.
Definition: itkBinaryFunctorImageFilter.h:53
itk::Index::Fill
void Fill(IndexValueType value)
Definition: itkIndex.h:270
itk::Size::Fill
void Fill(SizeValueType value)
Definition: itkSize.h:211
itkVectorImage.h
itk::GTest::TypedefsAndConstructors::Dimension2::IndexType
ImageBaseType::IndexType IndexType
Definition: itkGTestTypedefsAndConstructors.h:50
itkBinaryFunctorImageFilter.h
itk::GTest::TypedefsAndConstructors::Dimension2::RegionType
ImageBaseType::RegionType RegionType
Definition: itkGTestTypedefsAndConstructors.h:54
itk::operator==
bool operator==(const Index< VDimension > &one, const Index< VDimension > &two)
Definition: itkIndex.h:532
itkVector.h
itk::Image
Templated n-dimensional image class.
Definition: itkImage.h:86