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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 "itkDerivativeImageFilter.h"
#include "itkImageFileReader.h"
#include "itkImageFileWriter.h"
#include "itkRescaleIntensityImageFilter.h"
#include "itkSimpleFilterWatcher.h"
int itkDerivativeImageFilterTest(int argc, char *argv [] )
{
if( argc < 5 )
{
std::cerr << "Usage: " << std::endl;
std::cerr << argv[0] << " inputImageFile normalizedOutputImageFile ";
std::cerr << " derivativeOrder direction" << std::endl;
return EXIT_FAILURE;
}
// Test using an unsigned integral pixel type and generate a signed
// integral pixel type
typedef unsigned short InputPixelType;
typedef 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 reader = ReaderType::New();
reader->SetFileName( argv[1] );
// Define the filter
typedef itk::DerivativeImageFilter<
InputImageType, OutputImageType > FilterType;
FilterType::Pointer filter = FilterType::New();
// setup the filter
filter->SetOrder( atoi( argv[3] ) );
filter->SetDirection( atoi( argv[4] ) );
itk::SimpleFilterWatcher watcher(filter, "Derivative");
// wire the pipeline
filter->SetInput( reader->GetOutput() );
// Write the output
typedef itk::Image< unsigned char, Dimension > WriteImageType;
typedef itk::RescaleIntensityImageFilter<
OutputImageType,
WriteImageType > NormalizeFilterType;
typedef itk::ImageFileWriter< WriteImageType > NormalizedWriterType;
NormalizeFilterType::Pointer normalizer = NormalizeFilterType::New();
NormalizedWriterType::Pointer normalizedWriter = NormalizedWriterType::New();
normalizer->SetInput( filter->GetOutput() );
normalizedWriter->SetInput( normalizer->GetOutput() );
normalizer->SetOutputMinimum( 0 );
normalizer->SetOutputMaximum( 255 );
normalizedWriter->SetFileName( argv[2] );
normalizedWriter->Update();
return EXIT_SUCCESS;
}
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