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| ==Description== | | {{warning|1=The media wiki content on this page is no longer maintained.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.}} |
| This example demonstrates how to make a filter which produces an image.
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| ==ITK Classes Demonstrated==
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| == ImageSource.cxx==
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| <source lang="cpp">
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| #include "itkImage.h"
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| #include "itkImageFileWriter.h"
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| #include "ImageFilter.h"
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| int main(int, char*[])
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| {
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| // Setup types
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| typedef itk::Image<unsigned char, 2> ImageType;
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| typedef itk::ImageFilter<ImageType> FilterType;
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| // Create and the filter
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| FilterType::Pointer filter = FilterType::New();
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| filter->Update();
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|
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| typedef itk::ImageFileWriter< ImageType > WriterType;
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| WriterType::Pointer writer = WriterType::New();
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| writer->SetFileName("Test.jpg");
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| writer->SetInput(filter->GetOutput());
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| writer->Update();
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|
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| return EXIT_SUCCESS;
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| }
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| </source>
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| ==ImageSource.h==
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| <source lang="cpp">
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| #ifndef __itkImageFilter_h
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| #define __itkImageFilter_h
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| #include "itkImageSource.h"
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| namespace itk
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| {
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| template< class TOutputImage>
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| class ImageFilter:public ImageSource< TOutputImage >
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| {
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| public:
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| /** Standard class typedefs. */
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| typedef ImageFilter Self;
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| typedef ImageSource< TOutputImage > Superclass;
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| typedef SmartPointer< Self > Pointer;
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| /** Method for creation through the object factory. */
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| itkNewMacro(Self);
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| /** Run-time type information (and related methods). */
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| itkTypeMacro(ImageFilter, ImageSource); | |
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| protected:
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| ImageFilter(){}
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| ~ImageFilter(){}
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| /** Does the real work. */
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| virtual void GenerateData();
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| private:
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| ImageFilter(const Self &); //purposely not implemented
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| void operator=(const Self &); //purposely not implemented
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| };
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| } //namespace ITK
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| #ifndef ITK_MANUAL_INSTANTIATION
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| #include "ImageFilter.txx"
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| #endif
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| #endif // __itkImageFilter_h
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| </source>
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| ==ImageSource.txx==
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| <source lang="cpp">
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| #ifndef __itkImageFilter_txx
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| #define __itkImageFilter_txx
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| #include "ImageFilter.h"
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| #include "itkObjectFactory.h"
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| namespace itk
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| {
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| template< class TOutputImage>
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| void ImageFilter< TOutputImage>
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| ::GenerateData()
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| {
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| typename TOutputImage::Pointer output = this->GetOutput();
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| typename TOutputImage::RegionType region;
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| typename TOutputImage::IndexType start;
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| start[0] = 0;
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| start[1] = 0;
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| typename TOutputImage::SizeType size;
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| size[0] = 200;
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| size[1] = 300;
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| region.SetSize(size);
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| region.SetIndex(start);
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| output->SetRegions(region);
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| output->Allocate();
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| itk::ImageRegionIterator<TOutputImage> imageIterator(output,output->GetLargestPossibleRegion());
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| while(!imageIterator.IsAtEnd())
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| {
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| if(imageIterator.GetIndex()[0] == imageIterator.GetIndex()[1])
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| {
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| imageIterator.Set(255);
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| }
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| else
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| {
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| imageIterator.Set(0);
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| }
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| ++imageIterator;
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| }
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|
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| }
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| }// end namespace
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| #endif
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| </source>
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| {{ITKCMakeLists|{{SUBPAGENAME}}}}
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