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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 "itkTestingComparisonImageFilter.h"
#include "itkImageFileReader.h"
#include "itkImageFileWriter.h"
#include "itkSimpleFilterWatcher.h"
#include "itkTestingMacros.h"
#include <cstdlib>
#ifdef ITKV3_COMPATIBILITY
#include "itkDifferenceImageFilter.h"
#endif
int itkTestingComparisonImageFilterTest(int argc, char *argv [] )
{
if( argc < 7 )
{
std::cerr << "Usage: " << std::endl;
std::cerr << argv[0];
std::cerr << " inputImageFile1 inputImageFile2 outputImage threshold radius numberOfPixelsWithDifferences" << std::endl;
return EXIT_FAILURE;
}
// Test using an unsigned integral pixel type and generate a signed
// integral pixel type
typedef signed short InputPixelType;
typedef unsigned short OutputPixelType;
const unsigned int Dimension = 2;
typedef itk::Image< InputPixelType, Dimension > InputImageType;
typedef itk::Image< OutputPixelType, Dimension > OutputImageType;
typedef itk::ImageFileReader< InputImageType > ReaderType;
ReaderType::Pointer reader1 = ReaderType::New();
ReaderType::Pointer reader2 = ReaderType::New();
reader1->SetFileName( argv[1] );
reader2->SetFileName( argv[2] );
#ifdef ITKV3_COMPATIBILITY
typedef itk::DifferenceImageFilter<
InputImageType,
OutputImageType > DiffFilterType;
DiffFilterType::Pointer testInit=DiffFilterType::New();
// setup the testInit
testInit->SetDifferenceThreshold( atoi( argv[4] ) );
testInit->SetToleranceRadius( atoi( argv[5] ) );
// wire the pipeline
testInit->SetValidInput( reader1->GetOutput() );
testInit->SetTestInput( reader2->GetOutput() );
testInit->Update();
#endif
// Define the filter
typedef itk::Testing::ComparisonImageFilter<
InputImageType,
OutputImageType > FilterType;
FilterType::Pointer filter = FilterType::New();
// setup the filter
filter->SetDifferenceThreshold( atoi( argv[4] ) );
filter->SetToleranceRadius( atoi( argv[5] ) );
itk::SimpleFilterWatcher watcher( filter, "Difference");
// wire the pipeline
filter->SetValidInput( reader1->GetOutput() );
filter->SetTestInput( reader2->GetOutput() );
// Write the output
typedef itk::ImageFileWriter< OutputImageType > WriterType;
WriterType::Pointer writer = WriterType::New();
writer->SetInput( filter->GetOutput() );
writer->SetFileName( argv[3] );
TRY_EXPECT_NO_EXCEPTION( writer->Update() );
unsigned long numberOfPixelsWithDifferences =
filter->GetNumberOfPixelsWithDifferences();
char *end;
TEST_EXPECT_EQUAL(numberOfPixelsWithDifferences, std::strtoul( argv[6], &end, 10 ) );
// Change test input spacing to test that comparison filter fails if spacings are different
InputImageType::SpacingType spacing;
spacing[0] = 5;
spacing[1] = 1;
// Expect failure
reader2->GetOutput()->SetSpacing( spacing );
TRY_EXPECT_EXCEPTION( filter->Update() );
// Expect success
double coordinateTolerance = static_cast<double>( spacing[0] );
filter->SetCoordinateTolerance(coordinateTolerance);
TEST_SET_GET_VALUE( coordinateTolerance, filter->GetCoordinateTolerance() );
TRY_EXPECT_NO_EXCEPTION( filter->Update() );
// Reset
filter->SetCoordinateTolerance(1.0e-6);
reader2->GetOutput()->SetSpacing( reader1->GetOutput()->GetSpacing() );
// Change test input origin to test that comparison filter fails if origins are different
InputImageType::PointType origin;
origin[0] = 5;
origin[1] = 1;
// Expect failure
reader2->GetOutput()->SetOrigin( origin );
TRY_EXPECT_EXCEPTION( filter->Update() );
filter->SetCoordinateTolerance( 10 );
// Expect success
TRY_EXPECT_NO_EXCEPTION( filter->Update() );
// Reset
filter->SetCoordinateTolerance( 1.0e-6 );
reader2->GetOutput()->SetOrigin( reader1->GetOutput()->GetOrigin() );
// Change test input direction to test that comparison filter fails if directions are different
InputImageType::DirectionType direction;
direction[0][0] = 2;
direction[0][1] = 0;
direction[1][0] = 0;
direction[1][1] = 1;
// Expect failure
reader2->GetOutput()->SetDirection( direction );
TRY_EXPECT_EXCEPTION( filter->Update() );
// Expect success
filter->SetDirectionTolerance( 2 );
TEST_SET_GET_VALUE( 2, filter->GetDirectionTolerance() );
TRY_EXPECT_NO_EXCEPTION( filter->Update() );
// Reset
filter->SetDirectionTolerance( 1.0e-6 );
// Test disabling VerifyInputInformation()
filter->SetVerifyInputInformation(false);
TEST_SET_GET_VALUE( false, filter->GetVerifyInputInformation() );
filter->VerifyInputInformationOn();
TEST_SET_GET_VALUE( true, filter->GetVerifyInputInformation() );
filter->VerifyInputInformationOff();
TEST_SET_GET_VALUE( false, filter->GetVerifyInputInformation() );
TRY_EXPECT_NO_EXCEPTION( filter->Update() );
return EXIT_SUCCESS;
}
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