1. A stochastic map for uncertain spatial relationships;Cheeseman,1987
2. Visual simultaneous localization and mapping: a survey;Fuentes-Pacheco;Artif. Intell. Rev.,2015
3. LSD-SLAM: Large-scale direct monocular SLAM;Engel,2014
4. Direct sparse odometry;Engel;IEEE Trans. Pattern Anal. Mach. Intell.,2017
5. ORB-SLAM: a versatile and accurate monocular SLAM system;Mur-Artal;IEEE Trans. Robot.,2015