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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 "itkImageFileReader.h"
#include "itkImageFileWriter.h"
#include "itkRescaleIntensityImageFilter.h"
#include "itkAdaptiveHistogramEqualizationImageFilter.h"
#include "itkFilterWatcher.h"
int itkAdaptiveHistogramEqualizationImageFilterTest( int argc, char * argv[] )
{
if( argc < 6 )
{
std::cerr << "Usage: " << std::endl;
std::cerr << argv[0] << " inputImageFile outputImageFile radius alpha beta" << std::endl;
return EXIT_FAILURE;
}
typedef float InputPixelType;
static const int ImageDimension = 2;
typedef itk::Image< InputPixelType, ImageDimension > InputImageType;
typedef itk::ImageFileReader< InputImageType > ReaderType;
typedef itk::AdaptiveHistogramEqualizationImageFilter<
InputImageType > FilterType;
ReaderType::Pointer reader = ReaderType::New();
reader->SetFileName( argv[1] );
FilterType::ImageSizeType radius;
radius.Fill( atoi(argv[3]) );
FilterType::Pointer filter = FilterType::New();
FilterWatcher watcher(filter);
filter->SetInput( reader->GetOutput() );
filter->SetRadius( radius );
filter->SetAlpha( atof(argv[4]) );
filter->SetBeta( atof(argv[5]) );
//
// The output of the filter is connected here to a intensity rescaler filter
// and then to a writer. Invoking \code{Update()} on the writer triggers the
// execution of both filters.
//
typedef unsigned char WritePixelType;
typedef itk::Image< WritePixelType, 2 > WriteImageType;
typedef itk::RescaleIntensityImageFilter<
InputImageType, WriteImageType > RescaleFilterType;
RescaleFilterType::Pointer rescaler = RescaleFilterType::New();
rescaler->SetOutputMinimum( 0 );
rescaler->SetOutputMaximum( 255 );
rescaler->SetInput( filter->GetOutput() );
typedef itk::ImageFileWriter< WriteImageType > WriterType;
WriterType::Pointer writer = WriterType::New();
writer->SetFileName( argv[2] );
writer->SetInput( rescaler->GetOutput() );
writer->Update();
return EXIT_SUCCESS;
}
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