ITK/Examples/ImageProcessing/MultiplyByConstantImageFilter

MultiplyByConstantImageFilter.cxx

<source lang="cpp">

1. include "itkImage.h"
2. include "itkMultiplyByConstantImageFilter.h"
3. include "itkImageRegionConstIterator.h"

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

void OutputImage(ImageType::Pointer image);

int main( int argc, char *argv[]) {

 ImageType::Pointer image = ImageType::New();
 
 itk::Index<2> start;
 start.Fill(0);

 itk::Size<2> size;
 size.Fill(3);

 itk::ImageRegion<2> region(start, size);

 image->SetRegions(region);
 image->Allocate();
 image->FillBuffer(2);

 OutputImage(image);

 typedef itk::MultiplyByConstantImageFilter<ImageType, unsigned char, ImageType> MultiplyByConstantImageFilterType;
 MultiplyByConstantImageFilterType::Pointer multiplyByConstantImageFilter = MultiplyByConstantImageFilterType::New();
 multiplyByConstantImageFilter->SetInput(image);
 multiplyByConstantImageFilter->SetConstant(3);
 multiplyByConstantImageFilter->Update();

 OutputImage(multiplyByConstantImageFilter->GetOutput());
 
 return EXIT_SUCCESS;

}

void OutputImage(ImageType::Pointer image) {

 itk::ImageRegionConstIterator<ImageType> imageIterator(image,image->GetLargestPossibleRegion());

 while(!imageIterator.IsAtEnd())
   {
   // Get the value of the current pixel
   unsigned char val = imageIterator.Get();
   std::cout << (int)val << std::endl;

   ++imageIterator;
   }

} </source>

CMakeLists.txt

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

PROJECT(MultiplyByConstantImageFilter)

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

ADD_EXECUTABLE(MultiplyByConstantImageFilter MultiplyByConstantImageFilter.cxx) TARGET_LINK_LIBRARIES(MultiplyByConstantImageFilter ITKIO)

</source>