When running : ./build/mono_tum Vocabulary/ORBvoc.txt configs/Monocular/TUM/freiburg3_office.yaml ./rgbd_dataset_freiburg3_long_office_household/
The error came out : ./build/mono_tum: symbol lookup error: ./build/mono_tum: undefined symbol: _ZN3g2o17EdgeSE3ProjectXYZ15isDepthPositiveEv