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/*=========================================================================
Program: ORFEO Toolbox
Language: C++
Date: $Date$
Version: $Revision$
Copyright (c) Centre National d'Etudes Spatiales. All rights reserved.
See OTBCopyright.txt for details.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notices for more information.
=========================================================================*/
#include "otbKMeansImageClassificationFilter.h"
#include "otbVectorImage.h"
#include "otbImage.h"
#include "otbImageFileReader.h"
#include "otbImageFileWriter.h"
int otbKMeansImageClassificationFilter(int itkNotUsed(argc), char * argv[])
{
const char * infname = argv[1];
const char * outfname = argv[2];
const unsigned int nbClasses = atoi(argv[3]);
const unsigned int Dimension = 2;
typedef double PixelType;
typedef unsigned short LabeledPixelType;
typedef otb::VectorImage<PixelType, Dimension> ImageType;
typedef otb::Image<LabeledPixelType, Dimension> LabeledImageType;
typedef otb::KMeansImageClassificationFilter<ImageType, LabeledImageType> ClassificationFilterType;
typedef ClassificationFilterType::KMeansParametersType KMeansParametersType;
typedef otb::ImageFileReader<ImageType> ReaderType;
typedef otb::ImageFileWriter<LabeledImageType> WriterType;
// Instantiating object
ClassificationFilterType::Pointer filter = ClassificationFilterType::New();
ReaderType::Pointer reader = ReaderType::New();
reader->SetFileName(infname);
reader->GenerateOutputInformation();
const unsigned int sampleSize = ClassificationFilterType::MaxSampleDimension;
const unsigned int parameterSize = nbClasses * sampleSize;
KMeansParametersType parameters;
parameters.SetSize(parameterSize);
parameters.Fill(0);
for (unsigned int i = 0; i < nbClasses; ++i)
{
for (unsigned int j = 0; j < reader->GetOutput()->GetNumberOfComponentsPerPixel(); ++j)
{
parameters[i * sampleSize + j] = atof(argv[4 + i * reader->GetOutput()->GetNumberOfComponentsPerPixel() + j]);
}
}
std::cout << "Parameters: " << parameters << std::endl;
filter->SetCentroids(parameters);
filter->SetInput(reader->GetOutput());
WriterType::Pointer writer = WriterType::New();
writer->SetInput(filter->GetOutput());
writer->SetFileName(outfname);
writer->Update();
return EXIT_SUCCESS;
}
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