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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 "itkPoint.h"
#include "itkEuclideanDistanceMetric.h"
#include "otbGeographicalDistance.h"
#include "otbImageMetadata.h"
#include "otbMetaDataKey.h"
#include "otbGeomMetadataSupplier.h"
#include "otbImageMetadataInterfaceFactory.h"
#include "otbMacro.h"
#include "otbDEMHandler.h"
#include "otbImage.h"
#include "otbImageFileReader.h"
#include "otbRPCForwardTransform.h"
#include "otbRPCInverseTransform.h"
#include "otbGenericRSTransform.h"
using PointType = itk::Point<double, 3>;
using PointsContainerType = std::vector<PointType>;
using ForwardTransformType = otb::RPCForwardTransform<double, 3, 3>;
using InverseTransformType = otb::RPCInverseTransform<double, 3, 3>;
using GenericRSTransformType = otb::GenericRSTransform<double, 3, 3>;
using DistanceType = itk::Statistics::EuclideanDistanceMetric<PointType>;
using GeographicalDistanceType = otb::GeographicalDistance<PointType>;
int otbRPCTransformTest(int argc, char* argv[])
{
bool success = true;
PointType imagePoint;
PointType geo3dPoint;
// Inputs
std::string rpcFile(argv[1]);
std::string gcpFileName(argv[2]);
double geoTol(atof(argv[3]));
double imgTol(atof(argv[4]));
double lineOffset(0);
double sampleOffset(0);
if(argc == 7)
{
lineOffset = atof(argv[5]);
sampleOffset = atof(argv[6]);
}
// Tools
auto imgDistance = DistanceType::New();
auto geoDistance = GeographicalDistanceType::New();
OGRSpatialReference oSRS;
oSRS.SetWellKnownGeogCS("WGS84");
char* wgsRef = nullptr;
oSRS.exportToWkt(&wgsRef);
otb::ImageMetadata imd;
if (0 == rpcFile.compare(rpcFile.length() - 4, 4, "geom"))
{
// Fetching the RPC model from a GEOM file
otb::GeomMetadataSupplier geomSupplier(rpcFile);
for (int loop = 0 ; loop < geomSupplier.GetNbBands() ; ++loop)
imd.Bands.emplace_back();
otb::ImageMetadataInterfaceFactory::CreateIMI(imd, geomSupplier);
geomSupplier.FetchRPC(imd, lineOffset, sampleOffset);
}
else
{
// Fetching the RPC model from a product
using ImageType = otb::Image<double, 2>;
using ImageFileReaderType = otb::ImageFileReader<ImageType>;
auto reader = ImageFileReaderType::New();
reader->SetFileName(rpcFile);
reader->UpdateOutputInformation();
imd = reader->GetOutput()->GetImageMetadata();
imd.Remove(otb::MDGeom::ProjectionWKT);
}
// Setting the transforms
auto ForwardTransform = ForwardTransformType::New();
ForwardTransform->SetMetadata(imd);
auto InverseTransform = InverseTransformType::New();
InverseTransform->SetMetadata(imd);
auto GenericRSTransform_img2wgs = GenericRSTransformType::New();
GenericRSTransform_img2wgs->SetInputProjectionRef("");
GenericRSTransform_img2wgs->SetOutputProjectionRef(wgsRef);
GenericRSTransform_img2wgs->SetInputImageMetadata(&imd);
GenericRSTransform_img2wgs->InstantiateTransform();
auto GenericRSTransform_wgs2img = GenericRSTransformType::New();
GenericRSTransform_wgs2img->SetInputProjectionRef(wgsRef);
GenericRSTransform_wgs2img->SetOutputProjectionRef("");
GenericRSTransform_wgs2img->SetOutputImageMetadata(&imd);
GenericRSTransform_wgs2img->InstantiateTransform();
// Loading the GCP
PointsContainerType pointsContainer;
PointsContainerType geo3dPointsContainer;
std::ifstream file(gcpFileName, std::ios::in);
if (file)
{
std::string line;
while (getline(file, line))
{
if (line.find_first_of("#") != 0)
{
std::istringstream iss(line);
iss >> imagePoint[0] >> imagePoint[1] >> geo3dPoint[0] >> geo3dPoint[1] >> geo3dPoint[2];
imagePoint[2] = geo3dPoint[2];
pointsContainer.push_back(imagePoint);
geo3dPointsContainer.push_back(geo3dPoint);
}
}
file.close();
}
// For each CGP
double distance;
for (PointsContainerType::iterator pointsIt = pointsContainer.begin(), geo3dPointsIt = geo3dPointsContainer.begin() ;
(pointsIt != pointsContainer.end()) && (geo3dPointsIt != geo3dPointsContainer.end()) ;
++pointsIt, ++geo3dPointsIt)
{
// Testing forward transform
geo3dPoint = ForwardTransform->TransformPoint(*pointsIt);
distance = geoDistance->Evaluate(geo3dPoint, *geo3dPointsIt);
if (distance > geoTol)
{
std::cerr << "Geo distance between ForwardTransform->TransformPoint and GCP too high :\n"
<< "GCP: " << *geo3dPointsIt << " / computed: " << geo3dPoint << "\n"
<< "dist = " << distance << " (tol = " << geoTol << ")" << std::endl;
success = false;
}
// Testing inverse transform
imagePoint = InverseTransform->TransformPoint(*geo3dPointsIt);
distance = imgDistance->Evaluate(imagePoint, *pointsIt);
if (distance > imgTol)
{
std::cerr << "Distance between InverseTransform->TransformPoint and GCP too high :\n"
<< "GCP: " << *pointsIt << " / computed: " << imagePoint << "\n"
<< "dist = " << distance << " (tol = " << imgTol << ")" << std::endl;
success = false;
}
// Testing image to wgs transform
geo3dPoint = GenericRSTransform_img2wgs->TransformPoint(*pointsIt);
distance = geoDistance->Evaluate(geo3dPoint, *geo3dPointsIt);
if (distance > geoTol)
{
std::cerr << "Geo distance between GenericRSTransform_img2wgs->TransformPoint and GCP too high :\n"
<< "GCP: " << *geo3dPointsIt << " / computed: " << geo3dPoint << "\n"
<< "dist = " << distance << " (tol = " << geoTol << ")" << std::endl;
success = false;
}
// Testing wgs to image transform
imagePoint = GenericRSTransform_wgs2img->TransformPoint(*geo3dPointsIt);
distance = imgDistance->Evaluate(imagePoint, *pointsIt);
if (distance > imgTol)
{
std::cerr << "Distance between GenericRSTransform_wgs2img->TransformPoint and GCP too high :\n"
<< "GCP: " << *pointsIt << " / computed: " << imagePoint << "\n"
<< "dist = " << distance << " (tol = " << imgTol << ")" << std::endl;
success = false;
}
}
if (success)
return EXIT_SUCCESS;
else
return EXIT_FAILURE;
}
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