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| ==SpatialObjectToImageFilter.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| | {{warning|1=The media wiki content on this page is no longer maintained.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">
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| #include "itkSpatialObjectToImageFilter.h"
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| #include "itkEllipseSpatialObject.h"
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| #include "itkImageFileWriter.h"
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| int main( int argc, char *argv[] )
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| { | |
| if( argc != 2 )
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| {
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| std::cerr << "Usage: " << argv[0] << " outputimagefile " << std::endl;
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| return EXIT_FAILURE;
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| }
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| | |
| typedef unsigned char PixelType;
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| const unsigned int Dimension = 2;
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| typedef itk::Image< PixelType, Dimension > ImageType;
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| typedef itk::EllipseSpatialObject< Dimension > EllipseType;
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| typedef itk::SpatialObjectToImageFilter<
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| EllipseType, ImageType > SpatialObjectToImageFilterType;
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| SpatialObjectToImageFilterType::Pointer imageFilter =
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| SpatialObjectToImageFilterType::New();
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| // The SpatialObjectToImageFilter requires that the user defines the grid
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| // parameters of the output image. This includes the number of pixels along
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| // each dimension, the pixel spacing, image direction and
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| ImageType::SizeType size;
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| size[ 0 ] = 50;
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| size[ 1 ] = 50;
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| imageFilter->SetSize( size );
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| ImageType::SpacingType spacing;
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| spacing[0] = 100.0 / size[0];
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| spacing[1] = 100.0 / size[1];
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| imageFilter->SetSpacing( spacing );
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| EllipseType::Pointer ellipse = EllipseType::New();
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| EllipseType::ArrayType radiusArray;
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| radiusArray[0] = 10;
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| radiusArray[1] = 20;
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| //ellipse->SetRadius( size[0] * 0.2 * spacing[0] );
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| ellipse->SetRadius(radiusArray);
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| // Position the ellipse
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| typedef EllipseType::TransformType TransformType;
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| TransformType::Pointer transform = TransformType::New();
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| transform->SetIdentity();
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| TransformType::OutputVectorType translation;
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| TransformType::CenterType center;
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| translation[ 0 ] = size[0] * spacing[0] / 2.0;
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| translation[ 1 ] = size[1] * spacing[1] / 4.0;
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| transform->Translate( translation, false ); | |
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| ellipse->SetObjectToParentTransform( transform );
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| imageFilter->SetInput(ellipse);
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| ellipse->SetDefaultInsideValue(255);
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| ellipse->SetDefaultOutsideValue(0);
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| imageFilter->SetUseObjectValue( true );
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| imageFilter->SetOutsideValue( 0 );
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| typedef itk::ImageFileWriter< ImageType > WriterType;
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| WriterType::Pointer writer = WriterType::New();
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| writer->SetFileName( argv[1] );
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| writer->SetInput( imageFilter->GetOutput() );
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| try
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| {
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| imageFilter->Update();
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| writer->Update();
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| }
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| catch( itk::ExceptionObject & excp )
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| {
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| std::cerr << excp << std::endl;
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| return EXIT_FAILURE;
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| }
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| return EXIT_SUCCESS;
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| }
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| | |
| </source>
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| {{ITKCMakeLists|{{SUBPAGENAME}}}}
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