286 lines
11 KiB
C++
286 lines
11 KiB
C++
/*
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* GenericProjectionFactorsCreator.h
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*
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* Created on: Oct 10, 2013
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* Author: zkira
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*/
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#ifndef GENERICPROJECTIONFACTORSCREATOR_H_
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#define GENERICPROJECTIONFACTORSCREATOR_H_
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// Both relative poses and recovered trajectory poses will be stored as Pose3 objects
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#include <gtsam/geometry/Pose3.h>
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#include <gtsam/linear/NoiseModel.h>
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#include <gtsam/nonlinear/NonlinearFactorGraph.h>
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// Use a map to store landmark/smart factor pairs
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#include <gtsam/base/FastMap.h>
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#include <gtsam/slam/ProjectionFactor.h>
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#include <gtsam/geometry/PinholeCamera.h>
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#include <gtsam/geometry/Cal3Bundler.h>
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//#include <boost/foreach.hpp>
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//#include <boost/assign.hpp>
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//#include <boost/assign/std/vector.hpp>
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//#include <fstream>
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//#include <iostream>
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#include <utility>
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namespace gtsam {
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typedef GenericProjectionFactor<Pose3, Point3, Cal3_S2> ProjectionFactor;
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typedef FastMap<Key, std::vector<boost::shared_ptr<ProjectionFactor> > > ProjectionFactorMap;
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typedef FastMap<Key, int> OrderingMap;
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template<class POSE, class LANDMARK, class CALIBRATION = Cal3_S2>
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class GenericProjectionFactorsCreator {
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public:
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GenericProjectionFactorsCreator(const SharedNoiseModel& model,
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const boost::shared_ptr<CALIBRATION>& K,
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boost::optional<POSE> body_P_sensor = boost::none) :
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noise_(model), K_(K), body_P_sensor_(body_P_sensor),
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orderingMethod(0), totalNumMeasurements(0), numLandmarks(0) {
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ordering = boost::make_shared<Ordering>(*(new Ordering()));
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};
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void add(Key landmarkKey,
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Key poseKey, Point2 measurement, NonlinearFactorGraph &graph) {
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bool debug = false;
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// Create projection factor
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ProjectionFactor::shared_ptr projectionFactor(new ProjectionFactor(measurement, noise_, poseKey, landmarkKey, K_));
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// Check if landmark exists in mapping
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ProjectionFactorMap::iterator pfit = projectionFactors.find(landmarkKey);
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if (pfit != projectionFactors.end()) {
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if (debug) fprintf(stderr,"Adding measurement to existing landmark\n");
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// Add projection factor to list of projection factors associated with this landmark
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(*pfit).second.push_back(projectionFactor);
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} else {
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if (debug) fprintf(stderr,"New landmark (%d)\n", pfit != projectionFactors.end());
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// Create a new vector of projection factors
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std::vector<ProjectionFactor::shared_ptr> projectionFactorVector;
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projectionFactorVector.push_back(projectionFactor);
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// Insert projection factor to NEW list of projection factors associated with this landmark
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projectionFactors.insert( std::make_pair(landmarkKey, projectionFactorVector) );
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// Add projection factor to graph
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//graph.push_back(projectionFactor);
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// We have a new landmark
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numLandmarks++;
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landmarkKeys.push_back( landmarkKey );
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}
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}
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void add(Key landmarkKey,
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Key poseKey,
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Point2 measurement,
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const SharedNoiseModel& model,
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const boost::shared_ptr<CALIBRATION>& K,
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NonlinearFactorGraph &graph) {
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bool debug = false;
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// Create projection factor
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ProjectionFactor::shared_ptr projectionFactor(new ProjectionFactor(measurement, model, poseKey, landmarkKey, K));
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// Check if landmark exists in mapping
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ProjectionFactorMap::iterator pfit = projectionFactors.find(landmarkKey);
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if (pfit != projectionFactors.end()) {
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if (debug) fprintf(stderr,"Adding measurement to existing landmark\n");
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// Add projection factor to list of projection factors associated with this landmark
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(*pfit).second.push_back(projectionFactor);
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} else {
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if (debug) fprintf(stderr,"New landmark (%d)\n", pfit != projectionFactors.end());
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// Create a new vector of projection factors
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std::vector<ProjectionFactor::shared_ptr> projectionFactorVector;
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projectionFactorVector.push_back(projectionFactor);
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// Insert projection factor to NEW list of projection factors associated with this landmark
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projectionFactors.insert( std::make_pair(landmarkKey, projectionFactorVector) );
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// Add projection factor to graph
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//graph.push_back(projectionFactor);
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// We have a new landmark
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numLandmarks++;
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landmarkKeys.push_back( landmarkKey );
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}
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}
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void update(NonlinearFactorGraph &graph, gtsam::Values::shared_ptr inputValues, gtsam::Values::shared_ptr outputValues, bool doTriangualatePoints = true) {
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addTriangulatedLandmarks(graph, inputValues, outputValues, doTriangualatePoints);
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updateOrdering(graph);
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}
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unsigned int getTotalNumMeasurements() { return totalNumMeasurements; }
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unsigned int getNumLandmarks() { return numLandmarks; }
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unsigned int getNumPoses() { return cameraPoseKeys.size(); }
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boost::shared_ptr<Ordering> getOrdering() { return ordering; }
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protected:
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void updateTriangulations() {
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}
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void updateOrdering(NonlinearFactorGraph &graph) {
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bool debug = false;
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if (1||debug) std::cout << "Landmark Keys: " << landmarkKeys.size() << " Pose Keys: " << cameraPoseKeys.size() << std::endl;
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if (1||debug) std::cout << "Pose ordering: " << ordering->size() << std::endl;
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if (orderingMethod == 1) {
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OrderingMap orderingMap;
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// Add landmark keys first for ordering
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BOOST_FOREACH(const Key& key, landmarkKeys) {
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orderingMap.insert( std::make_pair(key, 1) );
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}
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//Ordering::iterator oit;
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BOOST_FOREACH(const Key& key, cameraPoseKeys) {
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orderingMap.insert( std::make_pair(key, 2) );
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}
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*ordering = graph.orderingCOLAMDConstrained(orderingMap);
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}
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if (1||debug) std::cout << "Optimizing landmark first " << ordering->size() << std::endl;
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}
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void addTriangulatedLandmarks(NonlinearFactorGraph &graph, gtsam::Values::shared_ptr loadedValues,
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gtsam::Values::shared_ptr graphValues, bool doTriangualatePoints) {
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bool debug = false;
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if(doTriangualatePoints)
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std::cout << "Triangulating 3D points" << std::endl;
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else
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std::cout << "Reading initial guess for 3D points from file" << std::endl;
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std::vector<boost::shared_ptr<ProjectionFactor> > projectionFactorVector;
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std::vector<boost::shared_ptr<ProjectionFactor> >::iterator vfit;
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Point3 point;
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Pose3 cameraPose;
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ProjectionFactorMap::iterator pfit;
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if (debug) graphValues->print("graphValues \n");
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if (debug) std::cout << " # END VALUES: " << std::endl;
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// Iterate through all landmarks
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if (debug) std::cout << " PROJECTION FACTOR GROUPED: " << projectionFactors.size();
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int numProjectionFactors = 0;
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int numProjectionFactorsAdded = 0;
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int numFailures = 0;
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for (pfit = projectionFactors.begin(); pfit != projectionFactors.end(); pfit++) { // for each landmark!
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projectionFactorVector = (*pfit).second; // all factors connected to a given landmark
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std::vector<Pose3> cameraPoses;
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std::vector<Point2> measured;
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// Iterate through projection factors
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for (vfit = projectionFactorVector.begin(); vfit != projectionFactorVector.end(); vfit++) { // for each factors connected to the landmark
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numProjectionFactors++;
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if (debug) std::cout << "ProjectionFactor: " << std::endl;
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if (debug) (*vfit)->print("ProjectionFactor");
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// Iterate through poses
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cameraPoses.push_back( loadedValues->at<Pose3>((*vfit)->key1() ) ); // get poses connected to the landmark
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measured.push_back( (*vfit)->measured() ); // get measurements of the landmark
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}
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// Triangulate landmark based on set of poses and measurements
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if (doTriangualatePoints){
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// std::cout << "Triangulating points " << std::endl;
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try {
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point = triangulatePoint3(cameraPoses, measured, *K_);
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if (debug) std::cout << "Triangulation succeeded: " << point << std::endl;
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} catch( TriangulationUnderconstrainedException& e) {
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if (debug) std::cout << "Triangulation failed because of unconstrained exception" << std::endl;
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if (debug) {
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BOOST_FOREACH(const Pose3& pose, cameraPoses) {
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std::cout << " Pose: " << pose << std::endl;
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}
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}
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numFailures++;
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continue;
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} catch( TriangulationCheiralityException& e) {
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if (debug) std::cout << "Triangulation failed because of unconstrained exception" << std::endl;
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if (debug) {
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std::cout << "Triangulation failed because of cheirality exception" << std::endl;
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BOOST_FOREACH(const Pose3& pose, cameraPoses) {
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std::cout << " Pose: " << pose << std::endl;
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}
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}
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numFailures++;
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continue;
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}
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}else{ // we read 3D points from file
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if (loadedValues->exists<Point3>((*pfit).first)){ // (*pfit).first) is the key of the landmark
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// point
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}else{
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std::cout << "Trying to read non existing point from file " << std::endl;
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}
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}
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// Add projection factors and pose values
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for (vfit = projectionFactorVector.begin(); vfit != projectionFactorVector.end(); vfit++) { // for each proj factor connected to the landmark
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numProjectionFactorsAdded++;
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if (debug) std::cout << "Adding factor " << std::endl;
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if (debug) (*vfit)->print("Projection Factor");
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graph.push_back( (*vfit) ); // add factor to the graph
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if (!graphValues->exists<Pose3>( (*vfit)->key1()) && loadedValues->exists<Pose3>((*vfit)->key1())) {
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graphValues->insert((*vfit)->key1(), loadedValues->at<Pose3>((*vfit)->key1()));
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cameraPoseKeys.push_back( (*vfit)->key1() ); // add camera poses, if necessary
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// std::cout << "Added camera value " << std::endl;
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}
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}
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// Add landmark value
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if (debug) std::cout << "Adding value " << std::endl;
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graphValues->insert( projectionFactorVector[0]->key2(), point); // add point
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// std::cout << "Added point value " << std::endl;
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landmarkKeys.push_back( projectionFactorVector[0]->key2() );
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}
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if (1||debug) std::cout << " # PROJECTION FACTORS CALCULATED: " << numProjectionFactors;
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if (1||debug) std::cout << " # PROJECTION FACTORS ADDED: " << numProjectionFactorsAdded;
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if (1||debug) std::cout << " # FAILURES: " << numFailures << std::endl;
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}
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const SharedNoiseModel noise_; ///< noise model used
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///< (important that the order is the same as the keys that we use to create the factor)
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boost::shared_ptr<CALIBRATION> K_; ///< shared pointer to calibration object
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boost::optional<POSE> body_P_sensor_; ///< The pose of the sensor in the body frame
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std::vector<Key> cameraPoseKeys;
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std::vector<Key> landmarkKeys;
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ProjectionFactorMap projectionFactors;
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boost::shared_ptr<Ordering> ordering;
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// orderingMethod: 0 - COLAMD, 1 - landmark first, then COLAMD on poses (constrained ordering)
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int orderingMethod;
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unsigned int totalNumMeasurements;
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unsigned int numLandmarks;
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unsigned int numPoses;
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};
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}
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#endif /* SMARTPROJECTIONFACTORSCREATOR_H_ */
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