|
|
| Line 1: |
Line 1: |
| ==RecursiveMultiResolutionPyramidImageFilter.cxx== | | {{warning|1=The media wiki content on this page is no longer maintained.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 "itkImageFileWriter.h"
| |
| #include "itkRescaleIntensityImageFilter.h"
| |
| #include "itkRecursiveMultiResolutionPyramidImageFilter.h"
| |
| | |
| typedef itk::Image< unsigned char, 2 > UnsignedCharImageType;
| |
| | |
| static void CreateImage(UnsignedCharImageType::Pointer image);
| |
| | |
| int main(int, char *[])
| |
| {
| |
| UnsignedCharImageType::Pointer image = UnsignedCharImageType::New();
| |
| CreateImage(image);
| |
|
| |
| typedef itk::Image<float, 2 > FloatImageType;
| |
|
| |
| unsigned int numberOfLevels = 4;
| |
|
| |
| typedef itk::RecursiveMultiResolutionPyramidImageFilter<
| |
| UnsignedCharImageType, FloatImageType> RecursiveMultiResolutionPyramidImageFilterType;
| |
| RecursiveMultiResolutionPyramidImageFilterType::Pointer recursiveMultiResolutionPyramidImageFilter =
| |
| RecursiveMultiResolutionPyramidImageFilterType::New();
| |
| recursiveMultiResolutionPyramidImageFilter->SetInput(image);
| |
| recursiveMultiResolutionPyramidImageFilter->SetNumberOfLevels(numberOfLevels);
| |
| recursiveMultiResolutionPyramidImageFilter->Update();
| |
| | |
| // This outputs the levels (0 is the lowest resolution)
| |
| for(unsigned int i = 0; i < numberOfLevels; ++i)
| |
| {
| |
| // Scale so we can write to a PNG
| |
| typedef itk::RescaleIntensityImageFilter< FloatImageType, UnsignedCharImageType > RescaleFilterType;
| |
| RescaleFilterType::Pointer rescaleFilter = RescaleFilterType::New();
| |
| rescaleFilter->SetInput(recursiveMultiResolutionPyramidImageFilter->GetOutput(i));
| |
| rescaleFilter->SetOutputMinimum(0);
| |
| rescaleFilter->SetOutputMaximum(255);
| |
| rescaleFilter->Update();
| |
| | |
| typedef itk::ImageFileWriter<UnsignedCharImageType> FileWriterType;
| |
| FileWriterType::Pointer writer = FileWriterType::New();
| |
| std::stringstream ss;
| |
| ss << "output_" << i << ".png";
| |
| std::cout << "Writing " << ss.str() << std::endl;
| |
| writer->SetFileName(ss.str());
| |
| writer->SetInput(rescaleFilter->GetOutput());
| |
| writer->Update();
| |
| }
| |
|
| |
| return EXIT_SUCCESS;
| |
| }
| |
| | |
| | |
| void CreateImage(UnsignedCharImageType::Pointer image)
| |
| {
| |
| // Create a black image with 2 white regions
| |
|
| |
| UnsignedCharImageType::IndexType start;
| |
| start.Fill(0);
| |
| | |
| UnsignedCharImageType::SizeType size;
| |
| size.Fill(200);
| |
| | |
| UnsignedCharImageType::RegionType region(start,size); | |
| image->SetRegions(region);
| |
| image->Allocate();
| |
| image->FillBuffer(0);
| |
|
| |
| // Make a square
| |
| for(unsigned int r = 20; r < 80; r++)
| |
| {
| |
| for(unsigned int c = 30; c < 100; c++)
| |
| {
| |
| UnsignedCharImageType::IndexType pixelIndex;
| |
| pixelIndex[0] = r;
| |
| pixelIndex[1] = c;
| |
| | |
| image->SetPixel(pixelIndex, 255);
| |
| | |
| }
| |
| }
| |
| | |
| }
| |
| | |
| </source>
| |
| | |
| {{ITKCMakeLists|{{SUBPAGENAME}}}}
| |
