Difference between revisions of "ITK/Examples/WishList/Registration/BlockMatchingImageFilter"

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(Deprecated content that is moved to sphinx)
 
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This currently segfaults on the line  blockMatchingImageFilter->UpdateLargestPossibleRegion();
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{{warning|1=The media wiki content on this page is no longer maintainedThe examples presented on the https://itk.org/Wiki/*  pages likely require ITK version 4.13 or earlier releasesIn many cases, the examples on this page no longer conform to the best practices for modern ITK versions.}}
 
 
==BlockMatchingImageFilter.cxx==
 
<source lang="cpp">
 
#include "itkBlockMatchingImageFilter.h"
 
#include "itkImage.h"
 
#include "itkImageFileWriter.h"
 
#include "itkPoint.h"
 
#include "itkPointSet.h"
 
 
 
typedef itk::Image<unsigned char, 2> ImageType;
 
 
 
static void CreateImage(ImageType::Pointer image, const unsigned int x);
 
 
 
int main(int argc, char *argv[])
 
{
 
  // Create input images
 
  ImageType::Pointer fixedImage = ImageType::New();
 
  CreateImage(fixedImage, 40);
 
 
 
  ImageType::Pointer movingImage = ImageType::New();
 
  CreateImage(movingImage, 50);
 
 
 
//  typedef  itk::ImageFileWriter<ImageType> WriterType;
 
//  WriterType::Pointer writer = WriterType::New();
 
//  writer->SetFileName("input.png");
 
// writer->SetInput(input);
 
//  writer->Update();
 
 
 
  //  typedef itk::BlockMatchingImageFilter<ImageType, ImageType, PointSetType> BlockMatchingImageFilterType;
 
  typedef itk::BlockMatchingImageFilter<ImageType> BlockMatchingImageFilterType;
 
  BlockMatchingImageFilterType::Pointer blockMatchingImageFilter =
 
        BlockMatchingImageFilterType::New();
 
 
 
  // Generate feature points
 
// typedef itk::PointSet< float, 2>  PointSetType;
 
  typedef BlockMatchingImageFilterType::FeaturePointsType  PointSetType;
 
  typedef PointSetType::PointType PointType;
 
  typedef PointSetType::PointsContainerPointer PointsContainerPointer;
 
 
 
  PointSetType::Pointer  pointSet = PointSetType::New();
 
  PointsContainerPointer  points = pointSet->GetPoints();
 
 
 
  PointType p0, p1, p2, p3;
 
 
 
  p0[0]=  40.0; p0[1]= 40.0;
 
  p1[0]=  40.0; p1[1]= 60.0;
 
  p2[0]=  60.0; p2[1]= 40.0;
 
  p3[0]=  60.0; p2[1]= 60.0;
 
 
 
  points->InsertElement(0, p0);
 
  points->InsertElement(1, p1);
 
  points->InsertElement(2, p2);
 
  points->InsertElement(3, p3);
 
 
 
  blockMatchingImageFilter->SetFixedImage(fixedImage);
 
  blockMatchingImageFilter->SetMovingImage(movingImage);
 
  blockMatchingImageFilter->SetFeaturePoints(pointSet);
 
  blockMatchingImageFilter->UpdateLargestPossibleRegion();
 
 
 
  typename BlockMatchingImageFilterType::DisplacementsType * displacements =
 
          blockMatchingImageFilter->GetDisplacements();
 
 
 
  std::cout << "There are " << displacements->GetNumberOfPoints() << " displacements." << std::endl;
 
 
 
  return EXIT_SUCCESS;
 
}
 
 
 
void CreateImage(ImageType::Pointer image, const unsigned int x)
 
{
 
  // Allocate empty image
 
  itk::Index<2> start; start.Fill(0);
 
  itk::Size<2> size; size.Fill(100);
 
   ImageType::RegionType region(start, size);
 
  image->SetRegions(region);
 
  image->Allocate();
 
  image->FillBuffer(0);
 
 
 
  // Make a white square
 
  for(unsigned int r = x; r < x+20; r++)
 
    {
 
    for(unsigned int c = 40; c < 60; c++)
 
      {
 
      ImageType::IndexType pixelIndex;
 
      pixelIndex[0] = r;
 
      pixelIndex[1] = c;
 
      image->SetPixel(pixelIndex, 255);
 
      }
 
    }
 
}
 
 
 
</source>
 
 
 
{{ITKCMakeLists|{{SUBPAGENAME}}}}
 

Latest revision as of 15:11, 7 June 2019

Warning: 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.