WikiExamples/ImageProcessing/DivideImageFilter.cxx

#include "itkDivideImageFilter.h"
#include "itkImage.h"
#include "itkImageFileWriter.h"

typedef itk::Image<unsigned char, 2>  ImageType;

void CreateImage1(ImageType::Pointer image);
void CreateImage2(ImageType::Pointer image);

int main(int, char *[])
{
  ImageType::Pointer image1 = ImageType::New();
  CreateImage1(image1);

  ImageType::Pointer image2 = ImageType::New();
  CreateImage2(image2);

  typedef itk::DivideImageFilter <ImageType, ImageType, ImageType > DivideImageFilterType;

  DivideImageFilterType::Pointer divideImageFilter = DivideImageFilterType::New ();
  divideImageFilter->SetInput1(image1);
  divideImageFilter->SetInput2(image2);
  divideImageFilter->Update();

  typedef  itk::ImageFileWriter< ImageType  > WriterType;
  WriterType::Pointer writer = WriterType::New();
  writer->SetFileName("test.png");
  writer->SetInput(divideImageFilter->GetOutput());
  writer->Update();
  
  return EXIT_SUCCESS;
}

void CreateImage1(ImageType::Pointer image)
{
  // Create an image with 2 connected components
  ImageType::RegionType region;
  ImageType::IndexType start;
  start[0] = 0;
  start[1] = 0;

  ImageType::SizeType size;
  unsigned int NumRows = 200;
  unsigned int NumCols = 300;
  size[0] = NumRows;
  size[1] = NumCols;

  region.SetSize(size);
  region.SetIndex(start);

  image->SetRegions(region);
  image->Allocate();

  // Make a square
  for(unsigned int r = 20; r < 80; r++)
  {
      for(unsigned int c = 20; c < 80; c++)
      {
          ImageType::IndexType pixelIndex;
          pixelIndex[0] = r;
          pixelIndex[1] = c;

          image->SetPixel(pixelIndex, 15);
      }
  }
}


void CreateImage2(ImageType::Pointer image)
{
  // Create an image with 2 connected components
  ImageType::RegionType region;
  ImageType::IndexType start;
  start[0] = 0;
  start[1] = 0;

  ImageType::SizeType size;
  unsigned int NumRows = 200;
  unsigned int NumCols = 300;
  size[0] = NumRows;
  size[1] = NumCols;

  region.SetSize(size);
  region.SetIndex(start);

  image->SetRegions(region);
  image->Allocate();

  // Make another square
  for(unsigned int r = 40; r < 100; r++)
  {
      for(unsigned int c = 40; c < 100; c++)
      {
          ImageType::IndexType pixelIndex;
          pixelIndex[0] = r;
          pixelIndex[1] = c;

          image->SetPixel(pixelIndex, 15);
      }
  }
}