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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.
*/
/* Example usage:
./ScalingFilterExample Input/QB_Toulouse_Ortho_PAN.tif Output/QB_Toulouse_Ortho_PAN_rescaled.png Output/QB_Toulouse_Ortho_PAN_casted.png
*/
#include "otbImage.h"
#include "otbImageFileReader.h"
#include "otbImageFileWriter.h"
#include "itkUnaryFunctorImageFilter.h"
#include "itkRescaleIntensityImageFilter.h"
#include "itkCastImageFilter.h"
int main(int argc, char* argv[])
{
if (argc != 4)
{
std::cerr << "Usage: " << argv[0] << " <inputImageFile> ";
std::cerr << " <outputRescaledImageFile> <outputCastedImageFile>" << std::endl;
return EXIT_FAILURE;
}
using InputPixelType = unsigned short;
using OutputPixelType = unsigned char;
using InputImageType = otb::Image<InputPixelType, 2>;
using OutputImageType = otb::Image<OutputPixelType, 2>;
using ReaderType = otb::ImageFileReader<InputImageType>;
ReaderType::Pointer reader = ReaderType::New();
reader->SetFileName(argv[1]);
// The RescaleIntensityImageFilter is used to rescale the value
using RescalerType = itk::RescaleIntensityImageFilter<InputImageType, OutputImageType>;
RescalerType::Pointer rescaler = RescalerType::New();
rescaler->SetInput(reader->GetOutput());
using WriterType = otb::ImageFileWriter<OutputImageType>;
WriterType::Pointer writer = WriterType::New();
writer->SetFileName(argv[2]);
writer->SetInput(rescaler->GetOutput());
writer->Update();
using CasterType = itk::CastImageFilter<InputImageType, OutputImageType>;
CasterType::Pointer caster = CasterType::New();
caster->SetInput(reader->GetOutput());
writer->SetFileName(argv[3]);
writer->SetInput(caster->GetOutput());
writer->Update();
}
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