ITK/Examples/ImageProcessing/SquaredDifferenceImageFilter

SquaredDifferenceImageFilter.cxx

<source lang="cpp">

1. include "itkImage.h"
2. include "itkSquaredDifferenceImageFilter.h"
3. include "itkImageRegionIterator.h"

typedef itk::Image<unsigned char, 2> UnsignedCharImageType; typedef itk::Image<float, 2> FloatImageType;

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

int main(int, char *[]) {

 UnsignedCharImageType::Pointer image1 = UnsignedCharImageType::New();
 CreateImage1(image1);

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

 typedef itk::SquaredDifferenceImageFilter <UnsignedCharImageType, UnsignedCharImageType,
                                            FloatImageType>
         SquaredDifferenceImageFilterType;

 SquaredDifferenceImageFilterType::Pointer squaredDifferenceFilter
         = SquaredDifferenceImageFilterType::New ();
 squaredDifferenceFilter->SetInput1(image1);
 squaredDifferenceFilter->SetInput2(image2);
 squaredDifferenceFilter->Update();

 return EXIT_SUCCESS;

}

void CreateImage1(UnsignedCharImageType::Pointer image) {

 UnsignedCharImageType::IndexType start;
 start.Fill(0);

 UnsignedCharImageType::SizeType size;
 size.Fill(10);

 UnsignedCharImageType::RegionType region;
 region.SetSize(size);
 region.SetIndex(start);

 image->SetRegions(region);
 image->Allocate();
 
 itk::ImageRegionIterator<UnsignedCharImageType> imageIterator(image,region);

 while(!imageIterator.IsAtEnd())
   {
   imageIterator.Set(255);

   ++imageIterator;
   }

}

void CreateImage2(UnsignedCharImageType::Pointer image) {

 // Create an image with 2 connected components
 UnsignedCharImageType::IndexType start;
 start.Fill(0);

 UnsignedCharImageType::SizeType size;
 size.Fill(10);

 UnsignedCharImageType::RegionType region;
 region.SetSize(size);
 region.SetIndex(start);

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

 itk::ImageRegionIterator<UnsignedCharImageType> imageIterator(image,region);

 while(!imageIterator.IsAtEnd())
   {
   imageIterator.Set(100);

   ++imageIterator;
   }

} </source>

CMakeLists.txt

<source lang="cmake"> cmake_minimum_required(VERSION 2.6)

PROJECT(SquaredDifferenceImageFilter)

include_directories(/home/doriad/src/ITK/Wrapping/WrapITK/ExternalProjects/ItkVtkGlue/src/)

FIND_PACKAGE(VTK REQUIRED) INCLUDE(${VTK_USE_FILE})

FIND_PACKAGE(ITK REQUIRED) INCLUDE(${ITK_USE_FILE})

ADD_EXECUTABLE(SquaredDifferenceImageFilter SquaredDifferenceImageFilter.cxx) TARGET_LINK_LIBRARIES(SquaredDifferenceImageFilter vtkHybrid ITKBasicFilters ITKCommon ITKIO) </source>