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/*
* Copyright (C) 2005-2020 Centre National d'Etudes Spatiales (CNES)
*
* This file is part of Orfeo Toolbox
*
* https://www.orfeo-toolbox.org/
*
* 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
*
* 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 "otbImageFileReader.h"
#include "otbImageFileWriter.h"
#include "otbImage.h"
#include "otbCLHistogramEqualizationFilter.h"
int otbCLHistogramEqualizationFilter(int itkNotUsed(argc), char* argv[])
{
typedef int InputPixelType;
const unsigned int Dimension = 2;
typedef otb::Image<InputPixelType, Dimension> InputImageType;
typedef otb::CLHistogramEqualizationFilter<InputImageType, InputImageType> FilterType;
typedef otb::ImageFileReader<InputImageType> ReaderType;
typedef otb::ImageFileWriter<InputImageType> WriterType;
ReaderType::Pointer reader(ReaderType::New());
WriterType::Pointer writer(WriterType::New());
reader->SetFileName(argv[1]);
writer->SetFileName(argv[2]);
reader->UpdateOutputInformation();
FilterType::Pointer histoEqualize(FilterType::New());
histoEqualize->SetInput(reader->GetOutput());
histoEqualize->SetMin(0);
histoEqualize->SetMax(255);
histoEqualize->SetNbBin(256);
auto size = reader->GetOutput()->GetLargestPossibleRegion().GetSize();
size[0] /= 4;
size[1] /= 4;
histoEqualize->SetThumbSize(size);
writer->SetInput(histoEqualize->GetOutput());
writer->Update();
return EXIT_SUCCESS;
}
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