ITK/Examples/ImageProcessing/MultiplyImageFilter

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ITK Examples Baseline ImageProcessing TestMultiplyImageFilter.png

Contents

MultiplyImageFilter.cxx

#include "itkImage.h"
#include "itkImageFileWriter.h"
#include "itkRescaleIntensityImageFilter.h"
#include "itkMultiplyImageFilter.h"
 
#include "QuickView.h"
 
typedef itk::Image<unsigned char, 2>  ImageType;
 
static void CreateImage1(ImageType::Pointer image);
static 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::MultiplyImageFilter <ImageType, ImageType >
    MultiplyImageFilterType;
 
  MultiplyImageFilterType::Pointer multiplyFilter
    = MultiplyImageFilterType::New ();
  multiplyFilter->SetInput1(image1);
  multiplyFilter->SetInput2(image2);
 
  QuickView viewer;
  viewer.AddImage<ImageType>(image1);
  viewer.AddImage<ImageType>(image2);
  viewer.AddImage<ImageType>(multiplyFilter->GetOutput());
  viewer.Visualize();
 
  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);
      }
    }
}

CMakeLists.txt

cmake_minimum_required(VERSION 2.8)
 
project(MultiplyImageFilter)
 
find_package(ItkVtkGlue REQUIRED)
include(${ItkVtkGlue_USE_FILE})
 
add_executable(MultiplyImageFilter MultiplyImageFilter.cxx)
target_link_libraries(MultiplyImageFilter
  ItkVtkGlue  ${VTK_LIBRARIES} ${ITK_LIBRARIES})

Building All of the Examples

Many of the examples in the ITK Wiki Examples Collection require VTK. You can build all of the the examples by following these instructions. If you are a new VTK user, you may want to try the Superbuild which will build a proper ITK and VTK.

ItkVtkGlue

If you download the entire ITK Wiki Examples Collection, the ItkVtkGlue directory will be included and configured. If you wish to just build a few examples, then you will need to download ItkVtkGlue and build it. When you run cmake it will ask you to specify the location of the ItkVtkGlue binary directory.

Retrieved from "http://www.itk.org/Wiki/ITK/Examples/ImageProcessing/MultiplyImageFilter"
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