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/*=========================================================================
*
* 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 "itkBinaryThresholdImageFilter.h"
#include "itkImageFileReader.h"
#include "itkImageFileWriter.h"
#include "itkVotingBinaryHoleFillingImageFilter.h"
#include "itkTextOutput.h"
#include "itkTestingMacros.h"
int itkVotingBinaryHoleFillingImageFilterTest( int argc, char* argv[] )
{
if ( argc != 3 )
{
std::cerr << "Missing arguments" << std::endl;
std::cerr << "Usage: " << argv[0] << " Inputimage OutputImage" << std::endl;
return EXIT_FAILURE;
}
// Define the dimension of the images
const unsigned int Dimension = 2;
// Declare the pixel types of the images
typedef unsigned short InputPixelType;
typedef unsigned char OutputPixelType;
typedef itk::Image< InputPixelType, Dimension > InputImageType;
typedef itk::Image< OutputPixelType, Dimension > OutputImageType;
typedef itk::ImageFileReader< InputImageType > ReaderType;
typedef itk::ImageFileWriter< OutputImageType > WriterType;
ReaderType::Pointer reader = ReaderType::New();
reader->SetFileName( argv[1] );
TRY_EXPECT_NO_EXCEPTION( reader->Update() );
InputImageType::PixelType foreground = 97; // Prime numbers are good testers
InputImageType::PixelType background = 29;
itk::BinaryThresholdImageFilter< InputImageType, InputImageType >::Pointer thresholder =
itk::BinaryThresholdImageFilter< InputImageType, InputImageType >::New();
thresholder->SetInput( reader->GetOutput() );
thresholder->SetLowerThreshold( 30 );
thresholder->SetUpperThreshold( 100 );
thresholder->SetInsideValue( foreground );
thresholder->SetOutsideValue( background );
// Define the voting binary hole filling filter
typedef itk::VotingBinaryHoleFillingImageFilter< InputImageType, OutputImageType >
VotingBinaryHoleFillingImageFilterType;
VotingBinaryHoleFillingImageFilterType::Pointer voting =
VotingBinaryHoleFillingImageFilterType::New();
EXERCISE_BASIC_OBJECT_METHODS( voting, VotingBinaryHoleFillingImageFilter,
VotingBinaryImageFilter );
// Define the neighborhood size used for the voting filter (3x3)
InputImageType::SizeType neighRadius;
neighRadius[0] = 1;
neighRadius[1] = 1;
voting->SetRadius( neighRadius );
// Set the number of pixels over 50% that will tip the decision about
// switching a pixel
unsigned int majorityThreshold = 1;
voting->SetMajorityThreshold( majorityThreshold );
TEST_SET_GET_VALUE( majorityThreshold, voting->GetMajorityThreshold() );
voting->SetForegroundValue( foreground );
voting->SetBackgroundValue( background );
voting->SetInput( thresholder->GetOutput());
// Execute the filter
TRY_EXPECT_NO_EXCEPTION( voting->Update() );
std::cout << "Number of pixels changed: "
<< voting->GetNumberOfPixelsChanged() << std::endl;
WriterType::Pointer writer = WriterType::New();
writer->SetInput( voting->GetOutput() );
writer->SetFileName( argv[2] );
TRY_EXPECT_NO_EXCEPTION( writer->Update() );
std::cout << "Test finished" << std::endl;
return EXIT_SUCCESS;
}
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