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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 "itkRescaleIntensityImageFilter.h"
// This test is was written to test bug 9431
//
// It run a filter multiple times and expects the output to be the
// same when run with the same parameters. The two output images
// should be identical
int itkCannyEdgeDetectionImageFilterTest2(int argc, char * argv[] )
{
if(argc < 4)
{
std::cerr << "Usage: " << argv[0] << " InputImage OutputImage1 OutputImage2\n";
return -1;
}
const unsigned int Dimension = 2;
typedef float InputPixelType;
typedef itk::Image< InputPixelType, Dimension > InputImage;
typedef unsigned char OutputPixelType;
typedef itk::Image< OutputPixelType, Dimension > OutputImage;
itk::ImageFileReader<InputImage>::Pointer input
= itk::ImageFileReader<InputImage>::New();
input->SetFileName(argv[1]);
// Set up filter
itk::CannyEdgeDetectionImageFilter<InputImage, InputImage>::Pointer
filter =
itk::CannyEdgeDetectionImageFilter<InputImage, InputImage>::New();
filter->SetInput(input->GetOutput());
filter->SetVariance(1.0f);
filter->SetMaximumError(.01f);
filter->SetUpperThreshold(25);
filter->SetLowerThreshold(10);
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;
writer = itk::ImageFileWriter<OutputImage>::New();
writer->SetInput( rescale->GetOutput() );
try
{
// Generate test image
writer->SetFileName( argv[2] );
writer->Update();
// set canny filter to another value
filter->SetUpperThreshold(20);
filter->SetLowerThreshold(5);
rescale->Update();
// set it back expecting the same results
filter->SetUpperThreshold(25);
filter->SetLowerThreshold(10);
// Generate test image
writer->SetFileName( argv[3] );
writer->Update();
}
catch(itk::ExceptionObject &err)
{
(&err)->Print(std::cerr);
return EXIT_FAILURE;
}
return EXIT_SUCCESS;
}
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