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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 <iostream>
#include "itkCannyEdgeDetectionImageFilter.h"
#include "itkImageFileReader.h"
#include "itkImageFileWriter.h"
#include "itkSimpleFilterWatcher.h"
#include "itkRescaleIntensityImageFilter.h"
#include "itkMath.h"
#include "itkTestingMacros.h"
int itkCannyEdgeDetectionImageFilterTest( int argc, char * argv[] )
{
if(argc < 3)
{
std::cerr << "Usage: " << argv[0] << " InputImage OutputImage" << std::endl;
return EXIT_FAILURE;
}
const unsigned int Dimension = 2;
typedef float InputPixelType;
typedef itk::Image< InputPixelType, Dimension > InputImage;
typedef unsigned char OutputPixelType;
typedef itk::Image< OutputPixelType, Dimension > OutputImage;
typedef itk::CannyEdgeDetectionImageFilter<InputImage, InputImage>
CannyEdgeDetectionImageFilterType;
itk::ImageFileReader< InputImage >::Pointer reader =
itk::ImageFileReader< InputImage >::New();
reader->SetFileName( argv[1] );
// Set up the filter
CannyEdgeDetectionImageFilterType::Pointer filter = CannyEdgeDetectionImageFilterType::New();
EXERCISE_BASIC_OBJECT_METHODS( filter, CannyEdgeDetectionImageFilter, ImageToImageFilter );
itk::SimpleFilterWatcher watcher( filter );
filter->SetInput( reader->GetOutput() );
CannyEdgeDetectionImageFilterType::OutputImagePixelType upperThreshold = 30;
filter->SetUpperThreshold( upperThreshold );
TEST_SET_GET_VALUE( upperThreshold, filter->GetUpperThreshold() );
CannyEdgeDetectionImageFilterType::OutputImagePixelType lowerThreshold = 15;
filter->SetLowerThreshold( lowerThreshold );
TEST_SET_GET_VALUE( lowerThreshold, filter->GetLowerThreshold() );
CannyEdgeDetectionImageFilterType::ArrayType variance = 1.0f;
filter->SetVariance( variance );
TEST_SET_GET_VALUE( variance, filter->GetVariance() );
CannyEdgeDetectionImageFilterType::ArrayType maximumError = .01f;
filter->SetMaximumError( maximumError );
TEST_SET_GET_VALUE( maximumError, filter->GetMaximumError() );
itk::RescaleIntensityImageFilter<InputImage, OutputImage>::Pointer rescale =
itk::RescaleIntensityImageFilter<InputImage, OutputImage>::New();
rescale->SetInput( filter->GetOutput() );
rescale->SetOutputMinimum( 0);
rescale->SetOutputMaximum( 255 );
itk::ImageFileWriter<OutputImage>::Pointer writer = itk::ImageFileWriter<OutputImage>::New();
writer->SetInput( rescale->GetOutput() );
writer->SetFileName( argv[2] );
TRY_EXPECT_NO_EXCEPTION( writer->Update() );
return EXIT_SUCCESS;
}
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