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| ==ScalarToRGBColormapImageFilter.cxx== | | {{warning|1=The media wiki content on this page is no longer maintained.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 "itkImage.h"
| |
| #include "itkImageRegionConstIterator.h"
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| #include "itkScalarToRGBColormapImageFilter.h"
| |
| #include "itkRescaleIntensityImageFilter.h"
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| #include "itkImageFileWriter.h"
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| #include "itkRGBPixel.h"
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|
| |
|
| typedef itk::RGBPixel<unsigned char> RGBPixelType;
| | [https://itk.org/ITKExamples[ITK Sphinx Examples]] |
| typedef itk::Image<RGBPixelType, 2> RGBImageType;
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| | |
| typedef itk::Image<float, 2> FloatImageType;
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| typedef itk::Image<unsigned char, 2> UnsignedCharImageType;
| |
| | |
| int main( int argc, char *argv[])
| |
| {
| |
| FloatImageType::Pointer image = FloatImageType::New();
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| | |
| itk::Index<2> start;
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| start.Fill(0);
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| | |
| itk::Size<2> size;
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| size.Fill(20);
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| | |
| itk::ImageRegion<2> region(start, size);
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| | |
| image->SetRegions(region);
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| image->Allocate();
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| | |
| for(unsigned int i = 0; i < 20; i++)
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| {
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| for(unsigned int j = 0; j < 20; j++)
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| {
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| itk::Index<2> pixel;
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| pixel[0] = i;
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| pixel[1] = j;
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| image->SetPixel(pixel, j);
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| }
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| }
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| | |
| typedef itk::RescaleIntensityImageFilter< FloatImageType, UnsignedCharImageType > RescaleFilterType;
| |
| RescaleFilterType::Pointer rescaleFilter = RescaleFilterType::New();
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| rescaleFilter->SetInput(image);
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| rescaleFilter->SetOutputMinimum(0);
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| rescaleFilter->SetOutputMaximum(255);
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| rescaleFilter->Update();
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| | |
| {
| |
| typedef itk::ImageFileWriter< UnsignedCharImageType > WriterType;
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| WriterType::Pointer writer = WriterType::New();
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| writer->SetFileName("original.png");
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| writer->SetInput(rescaleFilter->GetOutput());
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| writer->Update();
| |
| }
| |
| | |
| typedef itk::ScalarToRGBColormapImageFilter<FloatImageType, RGBImageType> RGBFilterType;
| |
| RGBFilterType::Pointer rgbfilter = RGBFilterType::New();
| |
| rgbfilter->SetInput(image);
| |
| rgbfilter->SetColormap( RGBFilterType::Hot );
| |
| | |
| {
| |
| typedef itk::ImageFileWriter< RGBImageType > WriterType;
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| WriterType::Pointer writer = WriterType::New();
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| writer->SetFileName("hot.png");
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| writer->SetInput(rgbfilter->GetOutput());
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| writer->Update();
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| }
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| | |
| return EXIT_SUCCESS;
| |
| }
| |
| | |
| </source>
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| | |
| {{ITKCMakeLists|{{SUBPAGENAME}}}}
| |
