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/*
* Copyright (C) 1999-2011 Insight Software Consortium
* Copyright (C) 2005-2022 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.
*/
// This example illustrates how to read and write an image of pixel type
// \code{std::complex}. The complex type is defined as an integral part of the
// C++ language.
//
// We start by including the headers of the complex class, the image, and the
// reader and writer classes.
//
// \index{otb::ImageFileRead!Complex images}
// \index{otb::ImageFileWrite!Complex images}
// \index{Complex images!Instantiation}
// \index{Complex images!Reading}
// \index{Complex images!Writing}
#include <complex>
#include "otbImage.h"
#include "otbImageFileReader.h"
#include "otbImageFileWriter.h"
int main(int argc, char* argv[])
{
// Verify the number of parameters in the command line
if (argc < 3)
{
std::cerr << "Usage: " << std::endl;
std::cerr << argv[0] << " inputImageFile outputImageFile " << std::endl;
return EXIT_FAILURE;
}
// The image dimension and pixel type must be declared. In this case we use the
// \code{std::complex<>} as the pixel type. Using the dimension and pixel type
// we proceed to instantiate the image type.
const unsigned int Dimension = 2;
using PixelType = std::complex<float>;
using ImageType = otb::Image<PixelType, Dimension>;
// The image file reader and writer types are instantiated using the image
// type. We can then create objects for both of them.
using ReaderType = otb::ImageFileReader<ImageType>;
using WriterType = otb::ImageFileWriter<ImageType>;
ReaderType::Pointer reader = ReaderType::New();
WriterType::Pointer writer = WriterType::New();
// Filenames should be provided for both the reader and the writer. In this
// particular example we take those filenames from the command line arguments.
reader->SetFileName(argv[1]);
writer->SetFileName(argv[2]);
// Here we simply connect the output of the reader as input to the writer.
// This simple program could be used for converting complex images from one
// fileformat to another.
writer->SetInput(reader->GetOutput());
// The execution of this short pipeline is triggered by invoking the Update()
// method of the writer. This invocation must be placed inside a try/catch
// block since its execution may result in exceptions being thrown.
try
{
writer->Update();
}
catch (itk::ExceptionObject& err)
{
std::cerr << "ExceptionObject caught !" << std::endl;
std::cerr << err << std::endl;
return EXIT_FAILURE;
}
// For a more interesting use of this code, you may want to add a filter in
// between the reader and the writer and perform any complex image to complex
// image operation.
return EXIT_SUCCESS;
}
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