Pose3SLAMExample_initializePose3Chordal.cpp
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1 /* ----------------------------------------------------------------------------
2 
3  * GTSAM Copyright 2010, Georgia Tech Research Corporation,
4  * Atlanta, Georgia 30332-0415
5  * All Rights Reserved
6  * Authors: Frank Dellaert, et al. (see THANKS for the full author list)
7 
8  * See LICENSE for the license information
9 
10  * -------------------------------------------------------------------------- */
11 
21 #include <gtsam/slam/dataset.h>
23 #include <fstream>
24 
25 using namespace std;
26 using namespace gtsam;
27 
28 int main(const int argc, const char* argv[]) {
29  // Read graph from file
30  string g2oFile;
31  if (argc < 2)
32  g2oFile = findExampleDataFile("pose3example.txt");
33  else
34  g2oFile = argv[1];
35 
37  Values::shared_ptr initial;
38  bool is3D = true;
39  std::tie(graph, initial) = readG2o(g2oFile, is3D);
40 
41  // Add prior on the first key
42  auto priorModel = noiseModel::Diagonal::Variances(
43  (Vector(6) << 1e-6, 1e-6, 1e-6, 1e-4, 1e-4, 1e-4).finished());
44  Key firstKey = 0;
45  for (const auto key : initial->keys()) {
46  std::cout << "Adding prior to g2o file " << std::endl;
47  firstKey = key;
48  graph->addPrior(firstKey, Pose3(), priorModel);
49  break;
50  }
51 
52  std::cout << "Initializing Pose3 - chordal relaxation" << std::endl;
53  Values initialization = InitializePose3::initialize(*graph);
54  std::cout << "done!" << std::endl;
55 
56  if (argc < 3) {
57  initialization.print("initialization");
58  } else {
59  const string outputFile = argv[2];
60  std::cout << "Writing results to file: " << outputFile << std::endl;
62  Values::shared_ptr initial2;
63  std::tie(graphNoKernel, initial2) = readG2o(g2oFile);
64  writeG2o(*graphNoKernel, initialization, outputFile);
65  std::cout << "done! " << std::endl;
66  }
67  return 0;
68 }
Initialize Pose3 in a factor graph.
const gtsam::Symbol key('X', 0)
void writeG2o(const NonlinearFactorGraph &graph, const Values &estimate, const std::string &filename)
This function writes a g2o file from NonlinearFactorGraph and a Values structure. ...
Definition: dataset.cpp:636
Values initial
Definition: BFloat16.h:88
NonlinearFactorGraph graph
void print(const std::string &str="", const KeyFormatter &keyFormatter=DefaultKeyFormatter) const
Definition: Values.cpp:66
int main(const int argc, const char *argv[])
Array< double, 1, 3 > e(1./3., 0.5, 2.)
GraphAndValues readG2o(const std::string &g2oFile, const bool is3D, KernelFunctionType kernelFunctionType)
This function parses a g2o file and stores the measurements into a NonlinearFactorGraph and the initi...
Definition: dataset.cpp:621
string outputFile
traits
Definition: chartTesting.h:28
GTSAM_EXPORT std::string findExampleDataFile(const std::string &name)
Definition: dataset.cpp:70
std::shared_ptr< This > shared_ptr
Eigen::Matrix< double, Eigen::Dynamic, 1 > Vector
Values initialize(const NonlinearFactorGraph &graph, bool useOdometricPath)
Definition: lago.cpp:375
utility functions for loading datasets
std::uint64_t Key
Integer nonlinear key type.
Definition: types.h:102


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autogenerated on Tue Jul 4 2023 02:35:15