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| ==ImageAdaptorExtractVectorComponent.cxx==
| | {{warning|1=The media wiki content on this page is no longer maintained. The examples presented on the https://itk.org/Wiki/* pages likely require ITK version 4.13 or earlier releases. In many cases, the examples on this page no longer conform to the best practices for modern ITK versions. |
| <source lang="cpp">
| | }} |
| #include "itkImageAdaptor.h"
| |
| #include "itkImageRegionIterator.h"
| |
| | |
| typedef itk::Image<float, 2> ScalarImageType;
| |
| typedef itk::Image<itk::CovariantVector< float, 3>, 2> VectorImageType;
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| | |
| | |
| static void CreateImage(VectorImageType::Pointer image);
| |
| | |
| class VectorPixelAccessor
| |
| { | |
| public:
| |
| typedef itk::CovariantVector<float,3> InternalType;
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| typedef float ExternalType;
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| | |
| void operator=( const VectorPixelAccessor & vpa )
| |
| {
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| m_Index = vpa.m_Index;
| |
| }
| |
| ExternalType Get( const InternalType & input ) const
| |
| {
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| return static_cast<ExternalType>( input[ m_Index ] );
| |
| }
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| void SetIndex( unsigned int index )
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| {
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| m_Index = index;
| |
| }
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| private:
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| unsigned int m_Index;
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| };
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|
| |
| int main(int, char *[])
| |
| {
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| VectorImageType::Pointer image = VectorImageType::New();
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| CreateImage(image);
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| | |
| itk::Index<2> index;
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| index.Fill(0);
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|
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| std::cout << image->GetPixel(index) << std::endl;
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|
| |
| typedef itk::ImageAdaptor< VectorImageType,
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| VectorPixelAccessor > ImageAdaptorType;
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| | |
| ImageAdaptorType::Pointer adaptor = ImageAdaptorType::New();
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| | |
| VectorPixelAccessor accessor;
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| accessor.SetIndex(0);
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| adaptor->SetPixelAccessor( accessor );
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| adaptor->SetImage(image);
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| | |
| std::cout << adaptor->GetPixel(index) << std::endl;
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|
| |
| return EXIT_SUCCESS;
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| }
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| | |
| void CreateImage(VectorImageType::Pointer image)
| |
| {
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| VectorImageType::IndexType start;
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| start.Fill(0);
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| | |
| VectorImageType::SizeType size;
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| size.Fill(2);
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| | |
| VectorImageType::RegionType region; | |
| region.SetSize(size);
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| region.SetIndex(start);
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| | |
| image->SetRegions(region);
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| image->Allocate();
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|
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| itk::ImageRegionIterator<VectorImageType> imageIterator(image,image->GetLargestPossibleRegion());
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| itk::CovariantVector<float, 3> vec;
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| vec[0] = 1;
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| vec[1] = 2;
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| vec[2] = 3;
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|
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| while(!imageIterator.IsAtEnd())
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| {
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| imageIterator.Set(vec);
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| | |
| ++imageIterator;
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| }
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| } | |
| </source>
| |
| | |
| ==CMakeLists.txt==
| |
| <source lang="cmake">
| |
| cmake_minimum_required(VERSION 2.6)
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| | |
| PROJECT(ImageAdaptorExtractVectorComponent)
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| | |
| FIND_PACKAGE(ITK REQUIRED)
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| INCLUDE(${ITK_USE_FILE})
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| | |
| ADD_EXECUTABLE(ImageAdaptorExtractVectorComponent ImageAdaptorExtractVectorComponent.cxx)
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| TARGET_LINK_LIBRARIES(ImageAdaptorExtractVectorComponent ITKIO)
| |
| | |
| </source>
| |
