ITK/Examples/Smoothing/BilateralImageFilter

Blur an image while preserving edges.

BilateralImageFilter.cxx

<source lang="cpp">

1. include "itkImage.h"
2. include "itkImageFileReader.h"
3. include "itkBilateralImageFilter.h"
4. include "itkSubtractImageFilter.h"

1. include "QuickView.h"

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

 // Verify command line arguments
 if( argc < 2 )
   {
   std::cerr << "Usage: " << std::endl;
   std::cerr << argv[0] << " inputImageFile [domainSigma] [rangeSigma]" << std::endl;
   return EXIT_FAILURE;
   }
 double rangeSigma = 2.0;
 double domainSigma = 2.0;
 if (argc > 2)
   {
   domainSigma = atof(argv[2]);
   }
 if (argc > 3)
   {
   rangeSigma = atof(argv[3]);
   }

 // Parse command line arguments
 std::string inputFilename = argv[1];

 // Setup types
 typedef itk::Image< float, 2 >   ImageType;

 typedef itk::ImageFileReader< ImageType >
   ReaderType;
 typedef itk::BilateralImageFilter<
   ImageType, ImageType >
   FilterType;
 typedef itk::SubtractImageFilter< ImageType >
   SubtractImageFilterType;

 // Create and setup a reader
 ReaderType::Pointer reader = ReaderType::New();
 reader->SetFileName( inputFilename.c_str() );

 // Create and setup a derivative filter
 FilterType::Pointer bilateralFilter = FilterType::New();
 bilateralFilter->SetInput( reader->GetOutput() );
 bilateralFilter->SetDomainSigma(domainSigma);
 bilateralFilter->SetRangeSigma(rangeSigma);

 SubtractImageFilterType::Pointer diff = SubtractImageFilterType::New();
 diff->SetInput1(reader->GetOutput());
 diff->SetInput2(bilateralFilter->GetOutput());

 QuickView viewer;
 viewer.AddImage(
   reader->GetOutput(),true,
   itksys::SystemTools::GetFilenameName(argv[1]));  

 std::stringstream desc;
 desc << "Bilateral\ndomainSigma = " << domainSigma
      << " rangeSigma = " << rangeSigma;
 viewer.AddImage(
   bilateralFilter->GetOutput(),
   true,
   desc.str());  

 std::stringstream desc2;
 desc2 << "Original - Bilateral";
 viewer.AddImage(
   diff->GetOutput(),
   true,
   desc2.str());  

 viewer.Visualize();

 return EXIT_SUCCESS;

} </source>

CMakeLists.txt

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

PROJECT(BilateralImageFilter)

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(BilateralImageFilter BilateralImageFilter.cxx) TARGET_LINK_LIBRARIES(BilateralImageFilter vtkHybrid ITKBasicFilters ITKIO ITKCommon)

</source>