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/*
* 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.
*/
#include "otbImage.h"
#include "otbImageFileReader.h"
#include "itkLabelImageToLabelMapFilter.h"
#include "otbAttributesMapLabelObject.h"
#include "otbLabelObjectToPolygonFunctor.h"
#include "otbVectorData.h"
#include "otbVectorDataProjectionFilter.h"
#include "otbVectorDataFileWriter.h"
#include "otbStopwatch.h"
#include "itkMinimumMaximumImageCalculator.h"
#include "otbCorrectPolygonFunctor.h"
int otbLabelObjectMapVectorizer(int argc, char* argv[])
{
const char* infname = argv[1];
const char* outfname = argv[2];
// Labeled image type
const unsigned int Dimension = 2;
typedef unsigned short LabelType;
typedef otb::Image<LabelType, Dimension> LabeledImageType;
typedef otb::ImageFileReader<LabeledImageType> LabeledReaderType;
// Label map typedef
typedef otb::AttributesMapLabelObject<LabelType, Dimension, double> LabelObjectType;
typedef itk::LabelMap<LabelObjectType> LabelMapType;
typedef itk::LabelImageToLabelMapFilter<LabeledImageType, LabelMapType> LabelMapFilterType;
typedef otb::Polygon<double> PolygonType;
typedef otb::Functor::LabelObjectToPolygonFunctor<LabelObjectType, PolygonType> FunctorType;
typedef otb::VectorData<double, 2> VectorDataType;
typedef VectorDataType::DataNodeType DataNodeType;
typedef otb::VectorDataFileWriter<VectorDataType> WriterType;
typedef otb::VectorDataProjectionFilter<VectorDataType, VectorDataType> VectorDataFilterType;
typedef itk::MinimumMaximumImageCalculator<LabeledImageType> MinMaxCalculatorType;
typedef otb::CorrectPolygonFunctor<PolygonType> CorrectPolygonFunctorType;
LabeledReaderType::Pointer lreader = LabeledReaderType::New();
lreader->SetFileName(infname);
LabelMapFilterType::Pointer labelMapFilter = LabelMapFilterType::New();
labelMapFilter->SetInput(lreader->GetOutput());
labelMapFilter->SetBackgroundValue(itk::NumericTraits<LabelType>::max());
std::cout << "min: " << itk::NumericTraits<LabelType>::min() << std::endl;
std::cout << "max: " << itk::NumericTraits<LabelType>::max() << std::endl;
// labelMapFilter->SetBackgroundValue(0);
labelMapFilter->Update();
FunctorType functor;
// correct
CorrectPolygonFunctorType correctPolygon;
WriterType::Pointer writer = WriterType::New();
VectorDataType::Pointer data = VectorDataType::New();
DataNodeType::Pointer document = DataNodeType::New();
DataNodeType::Pointer folder1 = DataNodeType::New();
document->SetNodeType(otb::DOCUMENT);
folder1->SetNodeType(otb::FOLDER);
DataNodeType::Pointer root = data->GetDataTree()->GetRoot()->Get();
data->GetDataTree()->Add(document, root);
data->GetDataTree()->Add(folder1, document);
data->SetProjectionRef(lreader->GetOutput()->GetProjectionRef());
otb::Stopwatch chrono = otb::Stopwatch::StartNew();
// If a label is given, extract only this label
if (argc == 4)
{
std::cout << "Label is given; Vectorizing object " << atoi(argv[3]) << std::endl;
PolygonType::Pointer polygon = functor(labelMapFilter->GetOutput()->GetLabelObject(atoi(argv[3])));
// correct polygon
PolygonType::Pointer correct_polygon = correctPolygon(polygon);
DataNodeType::Pointer node = DataNodeType::New();
node->SetNodeType(otb::FEATURE_POLYGON);
node->SetPolygonExteriorRing(correct_polygon);
data->GetDataTree()->Add(node, folder1);
}
// Else extract all labels
else
{
MinMaxCalculatorType::Pointer minMax = MinMaxCalculatorType::New();
minMax->SetImage(lreader->GetOutput());
minMax->Compute();
for (LabelType label = minMax->GetMinimum(); label <= minMax->GetMaximum(); ++label)
{
if (labelMapFilter->GetOutput()->HasLabel(label) && label != labelMapFilter->GetOutput()->GetBackgroundValue())
{
std::cout << "Vectorizing object " << label << std::endl;
PolygonType::Pointer polygon = functor(labelMapFilter->GetOutput()->GetLabelObject(label));
// correct polygon
PolygonType::Pointer correct_polygon = correctPolygon(polygon);
DataNodeType::Pointer node = DataNodeType::New();
node->SetNodeType(otb::FEATURE_POLYGON);
node->SetPolygonExteriorRing(correct_polygon);
data->GetDataTree()->Add(node, folder1);
}
}
}
std::cout << "Total vectorization time: " << chrono.GetElapsedMilliseconds() << " ms." << std::endl;
VectorDataFilterType::Pointer vectorDataProjection = VectorDataFilterType::New();
vectorDataProjection->SetInputOrigin(lreader->GetOutput()->GetOrigin());
vectorDataProjection->SetInputSpacing(lreader->GetOutput()->GetSignedSpacing());
vectorDataProjection->SetInput(data);
writer->SetFileName(outfname);
writer->SetInput(vectorDataProjection->GetOutput());
writer->Update();
return EXIT_SUCCESS;
}
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