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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.
*
*=========================================================================*/
/** Example illustrating use of functions to convert between complex valued
* voxels, magnitude and phase, and real and imaginary representations.
*
* \author Simon K. Warfield simon.warfield\@childrens.harvard.edu
*
* \note Attribution Notice. This research work was made possible by Grant
* Number R01 RR021885 (PI Simon K. Warfield, Ph.D.) from
* the National Center for Research Resources (NCRR), a component of the
* National Institutes of Health (NIH). Its contents are solely the
* responsibility of the authors and do not necessarily represent the
* official view of NCRR or NIH.
*
*/
#include "itkImageFileReader.h"
#include "itkImageFileWriter.h"
#include "itkComposeImageFilter.h"
int itkImageReadRealAndImaginaryWriteComplexTest( int argc, char * argv[] )
{
if( argc != 4 )
{
std::cerr << "Usage: " << argv[0] << " inputReal inputImaginary outputComplex" << std::endl;
return EXIT_FAILURE;
}
const unsigned int Dimension = 2;
typedef float InputPixelType;
typedef float OutputPixelType;
typedef itk::Image< InputPixelType,Dimension > InputImageType;
typedef itk::Image< std::complex<OutputPixelType>,Dimension > OutputImageType;
typedef itk::ImageFileReader< InputImageType > ReaderType;
typedef itk::ImageFileWriter< OutputImageType > WriterType;
typedef itk::ComposeImageFilter <
InputImageType, OutputImageType > RealAndImaginary2ComplexFilterType;
ReaderType::Pointer readerReal = ReaderType::New();
ReaderType::Pointer readerImag = ReaderType::New();
WriterType::Pointer writer = WriterType::New();
RealAndImaginary2ComplexFilterType::Pointer RealAndImaginary2Complex = RealAndImaginary2ComplexFilterType::New();
readerReal->SetFileName( argv[1] );
readerImag->SetFileName( argv[2] );
writer->SetFileName( argv[3] );
// Read the image and get its size
readerReal->Update();
readerImag->Update();
RealAndImaginary2Complex->SetInput1(readerReal->GetOutput());
RealAndImaginary2Complex->SetInput2(readerImag->GetOutput());
writer->SetInput(RealAndImaginary2Complex->GetOutput());
try
{
writer->Update();
}
catch( itk::ExceptionObject & excp )
{
std::cerr << "Error writing the magnitude image: " << std::endl;
std::cerr << excp << std::endl;
return EXIT_FAILURE;
}
// check that the default template parameters work
typedef itk::ComposeImageFilter < InputImageType > DefaultParametersFilterType;
DefaultParametersFilterType::Pointer temp = DefaultParametersFilterType::New();
if( temp.IsNull() )
{
return EXIT_FAILURE;
}
return EXIT_SUCCESS;
}
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