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SphinxExamples/src/Filtering/Smoothing/MedianFilteringOfAnRGBImage/Code.cxx
/*=========================================================================
*
* Copyright Insight Software Consortium
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0.txt
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*=========================================================================*/
#include "
itkMedianImageFilter.h
"
#include "
itkRGBPixel.h
"
#include "
itkImage.h
"
#include "
itkImageFileReader.h
"
#include "
itkImageFileWriter.h
"
namespace
itk
{
template
<
typename
TComponent =
unsigned
short
>
class
myRGBPixel :
public
RGBPixel<TComponent>
{
public
:
typedef
myRGBPixel Self;
typedef
RGBPixel<TComponent> Superclass;
using
RGBPixel<TComponent>::operator=;
bool
operator<=(
const
Self & r)
const
{
return
(this->GetLuminance() <= r.GetLuminance());
}
bool
operator<(
const
Self & r)
const
{
return
(this->GetLuminance() < r.GetLuminance());
}
};
}
int
main(
int
argc,
char
* argv[])
{
// Verify command line arguments
if
( argc != 4 )
{
std::cerr <<
"Usage: "
<< std::endl;
std::cerr << argv[0] <<
" <InputImageFile> <OutputImageFile> <radius>"
<< std::endl;
return
EXIT_FAILURE;
}
// Setup types
const
unsigned
int
Dimension = 2;
typedef
itk::myRGBPixel< unsigned char > MyPixelType;
typedef
itk::Image< MyPixelType, Dimension >
MyImageType;
// Create and setup a reader
typedef
itk::ImageFileReader< MyImageType >
ReaderType;
ReaderType::Pointer reader = ReaderType::New();
reader->SetFileName( argv[1] );
// Create and setup a median filter
typedef
itk::MedianImageFilter< MyImageType, MyImageType >
FilterType;
FilterType::Pointer medianFilter = FilterType::New();
FilterType::InputSizeType radius;
radius.Fill( atoi( argv[3] ) );
medianFilter->SetRadius( radius );
medianFilter->SetInput( reader->GetOutput() );
// Cast the custom myRBGPixel's to RGBPixel's
typedef
itk::RGBPixel< unsigned char >
RGBPixelType;
typedef
itk::Image< RGBPixelType, Dimension >
RGBImageType;
typedef
itk::CastImageFilter< MyImageType, RGBImageType >
CastType;
CastType::Pointer cast = CastType::New();
cast->SetInput( medianFilter->GetOutput() );
typedef
itk::ImageFileWriter< RGBImageType >
WriterType;
WriterType::Pointer writer = WriterType::New();
writer->SetInput( cast->GetOutput() );
writer->SetFileName( argv[2] );
try
{
writer->Update();
}
catch
(
itk::ExceptionObject
& error )
{
std::cerr <<
"Error: "
<< error << std::endl;
return
EXIT_FAILURE;
}
return
EXIT_SUCCESS;
}
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