ITK  5.3.0
Insight Toolkit
SphinxExamples/src/Core/ImageAdaptors/ExtractChannelOfImageWithMultipleComponents/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.
*
*=========================================================================*/
using VectorImageType = itk::Image<itk::CovariantVector<float, 3>, 2>;
static void
CreateImage(VectorImageType::Pointer image);
int
main(int, char *[])
{
VectorImageType::Pointer image = VectorImageType::New();
CreateImage(image);
index.Fill(0);
std::cout << image->GetPixel(index) << std::endl;
ImageAdaptorType::Pointer adaptor = ImageAdaptorType::New();
adaptor->SelectNthElement(0);
adaptor->SetImage(image);
std::cout << adaptor->GetPixel(index) << std::endl;
return EXIT_SUCCESS;
}
void
CreateImage(VectorImageType::Pointer image)
{
start.Fill(0);
size.Fill(2);
region.SetSize(size);
region.SetIndex(start);
image->SetRegions(region);
image->Allocate();
// Create a pixel and fill it with (1,2,3), and set every pixel of the image to this pixel.
itk::ImageRegionIterator<VectorImageType> imageIterator(image, image->GetLargestPossibleRegion());
vectorPixel[0] = 1;
vectorPixel[1] = 2;
vectorPixel[2] = 3;
image->FillBuffer(vectorPixel);
}
itk::NthElementImageAdaptor
Presents an image as being composed of the N-th element of its pixels.
Definition: itkNthElementImageAdaptor.h:58
itk::Index
Represent a n-dimensional index in a n-dimensional image.
Definition: itkIndex.h:66
itkNthElementImageAdaptor.h
itk::GTest::TypedefsAndConstructors::Dimension2::SizeType
ImageBaseType::SizeType SizeType
Definition: itkGTestTypedefsAndConstructors.h:49
itkImageRegionIterator.h
itkImageAdaptor.h
itk::Index::Fill
void Fill(IndexValueType value)
Definition: itkIndex.h:270
itk::Size::Fill
void Fill(SizeValueType value)
Definition: itkSize.h:211
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
itk::GTest::TypedefsAndConstructors::Dimension2::RegionType
ImageBaseType::RegionType RegionType
Definition: itkGTestTypedefsAndConstructors.h:54
itk::CovariantVector
A templated class holding a n-Dimensional covariant vector.
Definition: itkCovariantVector.h:70
itk::Image
Templated n-dimensional image class.
Definition: itkImage.h:86
itk::ImageRegion::SetSize
void SetSize(const SizeType &size)
Definition: itkImageRegion.h:174