545 lines
16 KiB
C
545 lines
16 KiB
C
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/**
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* This file is part of ORB-SLAM3
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*
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* Copyright (C) 2017-2021 Carlos Campos, Richard Elvira, Juan J. Gómez Rodríguez, José M.M. Montiel and Juan D. Tardós, University of Zaragoza.
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* Copyright (C) 2014-2016 Raúl Mur-Artal, José M.M. Montiel and Juan D. Tardós, University of Zaragoza.
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*
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* ORB-SLAM3 is free software: you can redistribute it and/or modify it under the terms of the GNU General Public
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* License as published by the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* ORB-SLAM3 is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even
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* the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along with ORB-SLAM3.
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* If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef KEYFRAME_H
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#define KEYFRAME_H
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#include "MapPoint.h"
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#include "Thirdparty/DBoW2/DBoW2/BowVector.h"
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#include "Thirdparty/DBoW2/DBoW2/FeatureVector.h"
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#include "ORBVocabulary.h"
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#include "ORBextractor.h"
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#include "Frame.h"
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#include "KeyFrameDatabase.h"
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#include "ImuTypes.h"
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#include "GeometricCamera.h"
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#include "SerializationUtils.h"
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#include <mutex>
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#include <boost/serialization/base_object.hpp>
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#include <boost/serialization/vector.hpp>
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#include <boost/serialization/map.hpp>
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namespace ORB_SLAM3
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{
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class Map;
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class MapPoint;
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class Frame;
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class KeyFrameDatabase;
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class GeometricCamera;
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class KeyFrame
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{
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friend class boost::serialization::access;
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template<class Archive>
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void serialize(Archive& ar, const unsigned int version)
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{
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ar & mnId;
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ar & const_cast<long unsigned int&>(mnFrameId);
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ar & const_cast<double&>(mTimeStamp);
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// Grid
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ar & const_cast<int&>(mnGridCols);
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ar & const_cast<int&>(mnGridRows);
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ar & const_cast<float&>(mfGridElementWidthInv);
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ar & const_cast<float&>(mfGridElementHeightInv);
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// Variables of tracking
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//ar & mnTrackReferenceForFrame;
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//ar & mnFuseTargetForKF;
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// Variables of local mapping
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//ar & mnBALocalForKF;
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//ar & mnBAFixedForKF;
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//ar & mnNumberOfOpt;
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// Variables used by KeyFrameDatabase
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//ar & mnLoopQuery;
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//ar & mnLoopWords;
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//ar & mLoopScore;
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//ar & mnRelocQuery;
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//ar & mnRelocWords;
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//ar & mRelocScore;
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//ar & mnMergeQuery;
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//ar & mnMergeWords;
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//ar & mMergeScore;
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//ar & mnPlaceRecognitionQuery;
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//ar & mnPlaceRecognitionWords;
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//ar & mPlaceRecognitionScore;
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//ar & mbCurrentPlaceRecognition;
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// Variables of loop closing
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//serializeMatrix(ar,mTcwGBA,version);
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//serializeMatrix(ar,mTcwBefGBA,version);
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//serializeMatrix(ar,mVwbGBA,version);
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//serializeMatrix(ar,mVwbBefGBA,version);
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//ar & mBiasGBA;
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//ar & mnBAGlobalForKF;
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// Variables of Merging
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//serializeMatrix(ar,mTcwMerge,version);
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//serializeMatrix(ar,mTcwBefMerge,version);
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//serializeMatrix(ar,mTwcBefMerge,version);
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//serializeMatrix(ar,mVwbMerge,version);
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//serializeMatrix(ar,mVwbBefMerge,version);
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//ar & mBiasMerge;
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//ar & mnMergeCorrectedForKF;
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//ar & mnMergeForKF;
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//ar & mfScaleMerge;
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//ar & mnBALocalForMerge;
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// Scale
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ar & mfScale;
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// Calibration parameters
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ar & const_cast<float&>(fx);
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ar & const_cast<float&>(fy);
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ar & const_cast<float&>(invfx);
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ar & const_cast<float&>(invfy);
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ar & const_cast<float&>(cx);
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ar & const_cast<float&>(cy);
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ar & const_cast<float&>(mbf);
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ar & const_cast<float&>(mb);
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ar & const_cast<float&>(mThDepth);
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serializeMatrix(ar, mDistCoef, version);
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// Number of Keypoints
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ar & const_cast<int&>(N);
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// KeyPoints
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serializeVectorKeyPoints<Archive>(ar, mvKeys, version);
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serializeVectorKeyPoints<Archive>(ar, mvKeysUn, version);
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ar & const_cast<vector<float>& >(mvuRight);
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ar & const_cast<vector<float>& >(mvDepth);
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serializeMatrix<Archive>(ar,mDescriptors,version);
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// BOW
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ar & mBowVec;
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ar & mFeatVec;
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// Pose relative to parent
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serializeSophusSE3<Archive>(ar, mTcp, version);
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// Scale
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ar & const_cast<int&>(mnScaleLevels);
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ar & const_cast<float&>(mfScaleFactor);
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ar & const_cast<float&>(mfLogScaleFactor);
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ar & const_cast<vector<float>& >(mvScaleFactors);
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ar & const_cast<vector<float>& >(mvLevelSigma2);
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ar & const_cast<vector<float>& >(mvInvLevelSigma2);
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// Image bounds and calibration
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ar & const_cast<int&>(mnMinX);
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ar & const_cast<int&>(mnMinY);
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ar & const_cast<int&>(mnMaxX);
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ar & const_cast<int&>(mnMaxY);
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ar & boost::serialization::make_array(mK_.data(), mK_.size());
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// Pose
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serializeSophusSE3<Archive>(ar, mTcw, version);
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// MapPointsId associated to keypoints
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ar & mvBackupMapPointsId;
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// Grid
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ar & mGrid;
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// Connected KeyFrameWeight
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ar & mBackupConnectedKeyFrameIdWeights;
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// Spanning Tree and Loop Edges
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ar & mbFirstConnection;
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ar & mBackupParentId;
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ar & mvBackupChildrensId;
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ar & mvBackupLoopEdgesId;
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ar & mvBackupMergeEdgesId;
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// Bad flags
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ar & mbNotErase;
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ar & mbToBeErased;
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ar & mbBad;
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ar & mHalfBaseline;
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ar & mnOriginMapId;
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// Camera variables
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ar & mnBackupIdCamera;
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ar & mnBackupIdCamera2;
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// Fisheye variables
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ar & mvLeftToRightMatch;
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ar & mvRightToLeftMatch;
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ar & const_cast<int&>(NLeft);
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ar & const_cast<int&>(NRight);
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serializeSophusSE3<Archive>(ar, mTlr, version);
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serializeVectorKeyPoints<Archive>(ar, mvKeysRight, version);
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ar & mGridRight;
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// Inertial variables
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ar & mImuBias;
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ar & mBackupImuPreintegrated;
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ar & mImuCalib;
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ar & mBackupPrevKFId;
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ar & mBackupNextKFId;
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ar & bImu;
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ar & boost::serialization::make_array(mVw.data(), mVw.size());
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ar & boost::serialization::make_array(mOwb.data(), mOwb.size());
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ar & mbHasVelocity;
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}
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public:
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EIGEN_MAKE_ALIGNED_OPERATOR_NEW
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KeyFrame();
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KeyFrame(Frame &F, Map* pMap, KeyFrameDatabase* pKFDB);
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// Pose functions
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void SetPose(const Sophus::SE3f &Tcw);
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void SetVelocity(const Eigen::Vector3f &Vw_);
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Sophus::SE3f GetPose();
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Sophus::SE3f GetPoseInverse();
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Eigen::Vector3f GetCameraCenter();
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Eigen::Vector3f GetImuPosition();
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Eigen::Matrix3f GetImuRotation();
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Sophus::SE3f GetImuPose();
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Eigen::Matrix3f GetRotation();
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Eigen::Vector3f GetTranslation();
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Eigen::Vector3f GetVelocity();
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bool isVelocitySet();
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// Bag of Words Representation
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void ComputeBoW();
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// Covisibility graph functions
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void AddConnection(KeyFrame* pKF, const int &weight);
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void EraseConnection(KeyFrame* pKF);
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void UpdateConnections(bool upParent=true);
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void UpdateBestCovisibles();
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std::set<KeyFrame *> GetConnectedKeyFrames();
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std::vector<KeyFrame* > GetVectorCovisibleKeyFrames();
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std::vector<KeyFrame*> GetBestCovisibilityKeyFrames(const int &N);
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std::vector<KeyFrame*> GetCovisiblesByWeight(const int &w);
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int GetWeight(KeyFrame* pKF);
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// Spanning tree functions
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void AddChild(KeyFrame* pKF);
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void EraseChild(KeyFrame* pKF);
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void ChangeParent(KeyFrame* pKF);
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std::set<KeyFrame*> GetChilds();
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KeyFrame* GetParent();
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bool hasChild(KeyFrame* pKF);
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void SetFirstConnection(bool bFirst);
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// Loop Edges
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void AddLoopEdge(KeyFrame* pKF);
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std::set<KeyFrame*> GetLoopEdges();
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// Merge Edges
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void AddMergeEdge(KeyFrame* pKF);
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set<KeyFrame*> GetMergeEdges();
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// MapPoint observation functions
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int GetNumberMPs();
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void AddMapPoint(MapPoint* pMP, const size_t &idx);
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void EraseMapPointMatch(const int &idx);
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void EraseMapPointMatch(MapPoint* pMP);
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void ReplaceMapPointMatch(const int &idx, MapPoint* pMP);
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std::set<MapPoint*> GetMapPoints();
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std::vector<MapPoint*> GetMapPointMatches();
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int TrackedMapPoints(const int &minObs);
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MapPoint* GetMapPoint(const size_t &idx);
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// KeyPoint functions
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std::vector<size_t> GetFeaturesInArea(const float &x, const float &y, const float &r, const bool bRight = false) const;
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bool UnprojectStereo(int i, Eigen::Vector3f &x3D);
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// Image
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bool IsInImage(const float &x, const float &y) const;
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// Enable/Disable bad flag changes
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void SetNotErase();
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void SetErase();
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// Set/check bad flag
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void SetBadFlag();
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bool isBad();
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// Compute Scene Depth (q=2 median). Used in monocular.
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float ComputeSceneMedianDepth(const int q);
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static bool weightComp( int a, int b){
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return a>b;
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}
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static bool lId(KeyFrame* pKF1, KeyFrame* pKF2){
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return pKF1->mnId<pKF2->mnId;
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}
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Map* GetMap();
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void UpdateMap(Map* pMap);
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void SetNewBias(const IMU::Bias &b);
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Eigen::Vector3f GetGyroBias();
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Eigen::Vector3f GetAccBias();
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IMU::Bias GetImuBias();
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bool ProjectPointDistort(MapPoint* pMP, cv::Point2f &kp, float &u, float &v);
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bool ProjectPointUnDistort(MapPoint* pMP, cv::Point2f &kp, float &u, float &v);
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void PreSave(set<KeyFrame*>& spKF,set<MapPoint*>& spMP, set<GeometricCamera*>& spCam);
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void PostLoad(map<long unsigned int, KeyFrame*>& mpKFid, map<long unsigned int, MapPoint*>& mpMPid, map<unsigned int, GeometricCamera*>& mpCamId);
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void SetORBVocabulary(ORBVocabulary* pORBVoc);
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void SetKeyFrameDatabase(KeyFrameDatabase* pKFDB);
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bool bImu;
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// The following variables are accesed from only 1 thread or never change (no mutex needed).
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public:
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static long unsigned int nNextId;
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long unsigned int mnId;
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const long unsigned int mnFrameId;
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const double mTimeStamp;
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// Grid (to speed up feature matching)
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const int mnGridCols;
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const int mnGridRows;
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const float mfGridElementWidthInv;
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const float mfGridElementHeightInv;
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// Variables used by the tracking
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long unsigned int mnTrackReferenceForFrame;
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long unsigned int mnFuseTargetForKF;
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// Variables used by the local mapping
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long unsigned int mnBALocalForKF;
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long unsigned int mnBAFixedForKF;
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//Number of optimizations by BA(amount of iterations in BA)
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long unsigned int mnNumberOfOpt;
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// Variables used by the keyframe database
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long unsigned int mnLoopQuery;
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int mnLoopWords;
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float mLoopScore;
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long unsigned int mnRelocQuery;
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int mnRelocWords;
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float mRelocScore;
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long unsigned int mnMergeQuery;
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int mnMergeWords;
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float mMergeScore;
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long unsigned int mnPlaceRecognitionQuery;
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int mnPlaceRecognitionWords;
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float mPlaceRecognitionScore;
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bool mbCurrentPlaceRecognition;
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// Variables used by loop closing
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Sophus::SE3f mTcwGBA;
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Sophus::SE3f mTcwBefGBA;
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Eigen::Vector3f mVwbGBA;
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Eigen::Vector3f mVwbBefGBA;
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IMU::Bias mBiasGBA;
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long unsigned int mnBAGlobalForKF;
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// Variables used by merging
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Sophus::SE3f mTcwMerge;
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Sophus::SE3f mTcwBefMerge;
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Sophus::SE3f mTwcBefMerge;
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Eigen::Vector3f mVwbMerge;
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Eigen::Vector3f mVwbBefMerge;
|
||
|
|
IMU::Bias mBiasMerge;
|
||
|
|
long unsigned int mnMergeCorrectedForKF;
|
||
|
|
long unsigned int mnMergeForKF;
|
||
|
|
float mfScaleMerge;
|
||
|
|
long unsigned int mnBALocalForMerge;
|
||
|
|
|
||
|
|
float mfScale;
|
||
|
|
|
||
|
|
// Calibration parameters
|
||
|
|
const float fx, fy, cx, cy, invfx, invfy, mbf, mb, mThDepth;
|
||
|
|
cv::Mat mDistCoef;
|
||
|
|
|
||
|
|
// Number of KeyPoints
|
||
|
|
const int N;
|
||
|
|
|
||
|
|
// KeyPoints, stereo coordinate and descriptors (all associated by an index)
|
||
|
|
const std::vector<cv::KeyPoint> mvKeys;
|
||
|
|
const std::vector<cv::KeyPoint> mvKeysUn;
|
||
|
|
const std::vector<float> mvuRight; // negative value for monocular points
|
||
|
|
const std::vector<float> mvDepth; // negative value for monocular points
|
||
|
|
const cv::Mat mDescriptors;
|
||
|
|
|
||
|
|
//BoW
|
||
|
|
DBoW2::BowVector mBowVec;
|
||
|
|
DBoW2::FeatureVector mFeatVec;
|
||
|
|
|
||
|
|
// Pose relative to parent (this is computed when bad flag is activated)
|
||
|
|
Sophus::SE3f mTcp;
|
||
|
|
|
||
|
|
// Scale
|
||
|
|
const int mnScaleLevels;
|
||
|
|
const float mfScaleFactor;
|
||
|
|
const float mfLogScaleFactor;
|
||
|
|
const std::vector<float> mvScaleFactors;
|
||
|
|
const std::vector<float> mvLevelSigma2;
|
||
|
|
const std::vector<float> mvInvLevelSigma2;
|
||
|
|
|
||
|
|
// Image bounds and calibration
|
||
|
|
const int mnMinX;
|
||
|
|
const int mnMinY;
|
||
|
|
const int mnMaxX;
|
||
|
|
const int mnMaxY;
|
||
|
|
|
||
|
|
// Preintegrated IMU measurements from previous keyframe
|
||
|
|
KeyFrame* mPrevKF;
|
||
|
|
KeyFrame* mNextKF;
|
||
|
|
|
||
|
|
IMU::Preintegrated* mpImuPreintegrated;
|
||
|
|
IMU::Calib mImuCalib;
|
||
|
|
|
||
|
|
unsigned int mnOriginMapId;
|
||
|
|
|
||
|
|
string mNameFile;
|
||
|
|
|
||
|
|
int mnDataset;
|
||
|
|
|
||
|
|
std::vector <KeyFrame*> mvpLoopCandKFs;
|
||
|
|
std::vector <KeyFrame*> mvpMergeCandKFs;
|
||
|
|
|
||
|
|
//bool mbHasHessian;
|
||
|
|
//cv::Mat mHessianPose;
|
||
|
|
|
||
|
|
// The following variables need to be accessed trough a mutex to be thread safe.
|
||
|
|
protected:
|
||
|
|
// sophus poses
|
||
|
|
Sophus::SE3<float> mTcw;
|
||
|
|
Eigen::Matrix3f mRcw;
|
||
|
|
Sophus::SE3<float> mTwc;
|
||
|
|
Eigen::Matrix3f mRwc;
|
||
|
|
|
||
|
|
// IMU position
|
||
|
|
Eigen::Vector3f mOwb;
|
||
|
|
// Velocity (Only used for inertial SLAM)
|
||
|
|
Eigen::Vector3f mVw;
|
||
|
|
bool mbHasVelocity;
|
||
|
|
|
||
|
|
//Transformation matrix between cameras in stereo fisheye
|
||
|
|
Sophus::SE3<float> mTlr;
|
||
|
|
Sophus::SE3<float> mTrl;
|
||
|
|
|
||
|
|
// Imu bias
|
||
|
|
IMU::Bias mImuBias;
|
||
|
|
|
||
|
|
// MapPoints associated to keypoints
|
||
|
|
std::vector<MapPoint*> mvpMapPoints;
|
||
|
|
// For save relation without pointer, this is necessary for save/load function
|
||
|
|
std::vector<long long int> mvBackupMapPointsId;
|
||
|
|
|
||
|
|
// BoW
|
||
|
|
KeyFrameDatabase* mpKeyFrameDB;
|
||
|
|
ORBVocabulary* mpORBvocabulary;
|
||
|
|
|
||
|
|
// Grid over the image to speed up feature matching
|
||
|
|
std::vector< std::vector <std::vector<size_t> > > mGrid;
|
||
|
|
|
||
|
|
std::map<KeyFrame*,int> mConnectedKeyFrameWeights;
|
||
|
|
std::vector<KeyFrame*> mvpOrderedConnectedKeyFrames;
|
||
|
|
std::vector<int> mvOrderedWeights;
|
||
|
|
// For save relation without pointer, this is necessary for save/load function
|
||
|
|
std::map<long unsigned int, int> mBackupConnectedKeyFrameIdWeights;
|
||
|
|
|
||
|
|
// Spanning Tree and Loop Edges
|
||
|
|
bool mbFirstConnection;
|
||
|
|
KeyFrame* mpParent;
|
||
|
|
std::set<KeyFrame*> mspChildrens;
|
||
|
|
std::set<KeyFrame*> mspLoopEdges;
|
||
|
|
std::set<KeyFrame*> mspMergeEdges;
|
||
|
|
// For save relation without pointer, this is necessary for save/load function
|
||
|
|
long long int mBackupParentId;
|
||
|
|
std::vector<long unsigned int> mvBackupChildrensId;
|
||
|
|
std::vector<long unsigned int> mvBackupLoopEdgesId;
|
||
|
|
std::vector<long unsigned int> mvBackupMergeEdgesId;
|
||
|
|
|
||
|
|
// Bad flags
|
||
|
|
bool mbNotErase;
|
||
|
|
bool mbToBeErased;
|
||
|
|
bool mbBad;
|
||
|
|
|
||
|
|
float mHalfBaseline; // Only for visualization
|
||
|
|
|
||
|
|
Map* mpMap;
|
||
|
|
|
||
|
|
// Backup variables for inertial
|
||
|
|
long long int mBackupPrevKFId;
|
||
|
|
long long int mBackupNextKFId;
|
||
|
|
IMU::Preintegrated mBackupImuPreintegrated;
|
||
|
|
|
||
|
|
// Backup for Cameras
|
||
|
|
unsigned int mnBackupIdCamera, mnBackupIdCamera2;
|
||
|
|
|
||
|
|
// Calibration
|
||
|
|
Eigen::Matrix3f mK_;
|
||
|
|
|
||
|
|
// Mutex
|
||
|
|
std::mutex mMutexPose; // for pose, velocity and biases
|
||
|
|
std::mutex mMutexConnections;
|
||
|
|
std::mutex mMutexFeatures;
|
||
|
|
std::mutex mMutexMap;
|
||
|
|
|
||
|
|
public:
|
||
|
|
GeometricCamera* mpCamera, *mpCamera2;
|
||
|
|
|
||
|
|
//Indexes of stereo observations correspondences
|
||
|
|
std::vector<int> mvLeftToRightMatch, mvRightToLeftMatch;
|
||
|
|
|
||
|
|
Sophus::SE3f GetRelativePoseTrl();
|
||
|
|
Sophus::SE3f GetRelativePoseTlr();
|
||
|
|
|
||
|
|
//KeyPoints in the right image (for stereo fisheye, coordinates are needed)
|
||
|
|
const std::vector<cv::KeyPoint> mvKeysRight;
|
||
|
|
|
||
|
|
const int NLeft, NRight;
|
||
|
|
|
||
|
|
std::vector< std::vector <std::vector<size_t> > > mGridRight;
|
||
|
|
|
||
|
|
Sophus::SE3<float> GetRightPose();
|
||
|
|
Sophus::SE3<float> GetRightPoseInverse();
|
||
|
|
|
||
|
|
Eigen::Vector3f GetRightCameraCenter();
|
||
|
|
Eigen::Matrix<float,3,3> GetRightRotation();
|
||
|
|
Eigen::Vector3f GetRightTranslation();
|
||
|
|
|
||
|
|
void PrintPointDistribution(){
|
||
|
|
int left = 0, right = 0;
|
||
|
|
int Nlim = (NLeft != -1) ? NLeft : N;
|
||
|
|
for(int i = 0; i < N; i++){
|
||
|
|
if(mvpMapPoints[i]){
|
||
|
|
if(i < Nlim) left++;
|
||
|
|
else right++;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
cout << "Point distribution in KeyFrame: left-> " << left << " --- right-> " << right << endl;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
};
|
||
|
|
|
||
|
|
} //namespace ORB_SLAM
|
||
|
|
|
||
|
|
#endif // KEYFRAME_H
|