{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,15]],"date-time":"2026-07-15T17:20:29Z","timestamp":1784136029756,"version":"3.55.0"},"reference-count":190,"publisher":"MDPI AG","issue":"7","license":[{"start":{"date-parts":[[2021,4,2]],"date-time":"2021-04-02T00:00:00Z","timestamp":1617321600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>Simultaneous localization and mapping responds to the problem of building a map of the environment without any prior information and based on the data obtained from one or more sensors. In most situations, the robot is driven by a human operator, but some systems are capable of navigating autonomously while mapping, which is called active simultaneous localization and mapping. This strategy focuses on actively calculating the trajectories to explore the environment while building a map with a minimum error. In this paper, a comprehensive review of the research work developed in this field is provided, targeting the most relevant contributions in indoor mobile robotics.<\/jats:p>","DOI":"10.3390\/s21072445","type":"journal-article","created":{"date-parts":[[2021,4,1]],"date-time":"2021-04-01T23:05:11Z","timestamp":1617318311000},"page":"2445","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":151,"title":["Active Mapping and Robot Exploration: A Survey"],"prefix":"10.3390","volume":"21","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-9192-3879","authenticated-orcid":false,"given":"Iker","family":"Lluvia","sequence":"first","affiliation":[{"name":"Autonomous and Intelligent Systems Unit, Fundaci\u00f3n Tekniker, 20600 Eibar, Gipuzkoa, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7653-6210","authenticated-orcid":false,"given":"Elena","family":"Lazkano","sequence":"additional","affiliation":[{"name":"Robotics and Autonomous Systems Group (RSAIT), Computer Science and Artificial Intelligence Department, Faculty of Informatics, University of the Basque Country (UPV\/EHU), 20018 Donostia, Gipuzkoa, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9777-9564","authenticated-orcid":false,"given":"Ander","family":"Ansuategi","sequence":"additional","affiliation":[{"name":"Autonomous and Intelligent Systems Unit, Fundaci\u00f3n Tekniker, 20600 Eibar, Gipuzkoa, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2021,4,2]]},"reference":[{"key":"ref_1","unstructured":"Thrun, S., Burgard, W., and Fox, D. (2000). Probabilistic Robotics, MIT Press Cambridge."},{"key":"ref_2","doi-asserted-by":"crossref","unstructured":"Davison, A.J. (2003, January 14\u201317). Real-time simultaneous localisation and mapping with a single camera. Proceedings of the Ninth IEEE International Conference on Computer Vision, Nice, France.","DOI":"10.1109\/ICCV.2003.1238654"},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"99","DOI":"10.1109\/MRA.2006.1678144","article-title":"Simultaneous localization and mapping: Part I","volume":"13","author":"Bailey","year":"2006","journal-title":"IEEE Robot. Autom. Mag."},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"650","DOI":"10.1177\/02783649922066484","article-title":"Adaptive mobile robot navigation and mapping","volume":"18","author":"Feder","year":"1999","journal-title":"Int. J. Robot. Res."},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"78","DOI":"10.1109\/MRA.2012.2182810","article-title":"Visual odometry: Part ii: Matching, robustness, optimization, and applications","volume":"19","author":"Fraundorfer","year":"2012","journal-title":"IEEE Robot. Autom. Mag."},{"key":"ref_6","doi-asserted-by":"crossref","first-page":"1309","DOI":"10.1109\/TRO.2016.2624754","article-title":"Past, present, and future of simultaneous localization and mapping: Toward the robust-perception age","volume":"32","author":"Cadena","year":"2016","journal-title":"IEEE Trans. Robot."},{"key":"ref_7","unstructured":"Roy, N., Burgard, W., Fox, D., and Thrun, S. (1999, January 10\u201315). Coastal navigation-mobile robot navigation with uncertainty in dynamic environments. Proceedings of the IEEE International Conference on Robotics and Automation (Cat. No.99CH36288C), Detroit, MI, USA."},{"key":"ref_8","doi-asserted-by":"crossref","unstructured":"Mu, B., Giamou, M., Paull, L., Agha-mohammadi, A.a., Leonard, J., and How, J. (2016, January 12\u201314). Information-based active SLAM via topological feature graphs. Proceedings of the IEEE 55th Conference on Decision and Control (CDC), Las Vegas, NA, USA.","DOI":"10.1109\/CDC.2016.7799127"},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"60","DOI":"10.1038\/scientificamerican0851-60","article-title":"A machine that learns","volume":"185","author":"Walter","year":"1951","journal-title":"Sci. Am."},{"key":"ref_10","unstructured":"Nilsson, N.J. (1984). Shakey the Robot, SRI International. Technical Report."},{"key":"ref_11","unstructured":"Hornby, G.S., Takamura, S., Yokono, J., Hanagata, O., Yamamoto, T., and Fujita, M. (2000, January 24\u201328). Evolving robust gaits with AIBO. Proceedings of the ICRA. Millennium Conference. IEEE International Conference on Robotics and Automation. Symposia Proceedings (Cat. No. 00CH37065), San Francisco, CA, USA."},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"76","DOI":"10.1109\/MRA.2006.1598056","article-title":"Robots at the tipping point: The road to iRobot Roomba","volume":"13","author":"Jones","year":"2006","journal-title":"IEEE Robot. Autom. Mag."},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"565","DOI":"10.1002\/rob.21534","article-title":"Autonomous robot navigation in highly populated pedestrian zones","volume":"32","author":"Ruhnke","year":"2015","journal-title":"J. Field Robot."},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"99","DOI":"10.1016\/j.paerosci.2017.04.003","article-title":"Classifications, applications, and design challenges of drones: A review","volume":"91","author":"Hassanalian","year":"2017","journal-title":"Prog. Aerosp. Sci."},{"key":"ref_15","doi-asserted-by":"crossref","first-page":"108","DOI":"10.1109\/MRA.2006.1678144","article-title":"Simultaneous Localization and Mapping (SLAM) Part 2: State of the Art","volume":"13","author":"Bailey","year":"2006","journal-title":"Robot. Autom. Mag."},{"key":"ref_16","first-page":"363","article-title":"The slam problem: A survey","volume":"184","author":"Aulinas","year":"2008","journal-title":"CCIA"},{"key":"ref_17","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1145\/3177853","article-title":"Visual SLAM and structure from motion in dynamic environments: A survey","volume":"51","author":"Saputra","year":"2018","journal-title":"ACM Comput. Surv. (CSUR)"},{"key":"ref_18","doi-asserted-by":"crossref","first-page":"1188","DOI":"10.1016\/j.robot.2009.06.010","article-title":"A comparison of loop closing techniques in monocular SLAM","volume":"57","author":"Williams","year":"2009","journal-title":"Robot. Auton. Syst."},{"key":"ref_19","doi-asserted-by":"crossref","unstructured":"Hess, W., Kohler, D., Rapp, H., and Andor, D. (2016, January 16\u201321). Real-time loop closure in 2D LIDAR SLAM. Proceedings of the IEEE International Conference on Robotics and Automation (ICRA), Stockholm, Sweden.","DOI":"10.1109\/ICRA.2016.7487258"},{"key":"ref_20","doi-asserted-by":"crossref","first-page":"19","DOI":"10.1017\/S026357471300060X","article-title":"Two different tools for three-dimensional mapping: DE-based scan matching and feature-based loop detection","volume":"32","author":"Triebel","year":"2014","journal-title":"Robotica"},{"key":"ref_21","doi-asserted-by":"crossref","unstructured":"Garcia-Fidalgo, E., and Ortiz, A. (2014, January 16\u201319). On the use of binary feature descriptors for loop closure detection. Proceedings of the 2014 IEEE Emerging Technology and Factory Automation (ETFA), Barcelona, Spain.","DOI":"10.1109\/ETFA.2014.7005121"},{"key":"ref_22","doi-asserted-by":"crossref","first-page":"55","DOI":"10.1016\/j.robot.2015.12.003","article-title":"High performance loop closure detection using bag of word pairs","volume":"77","author":"Kejriwal","year":"2016","journal-title":"Robot. Auton. Syst."},{"key":"ref_23","doi-asserted-by":"crossref","first-page":"3051","DOI":"10.1109\/LRA.2018.2849609","article-title":"ibow-lcd: An appearance-based loop-closure detection approach using incremental bags of binary words","volume":"3","author":"Ortiz","year":"2018","journal-title":"IEEE Robot. Autom. Lett."},{"key":"ref_24","doi-asserted-by":"crossref","unstructured":"Labbe, M., and Michaud, F. (2014, January 14\u201318). Online global loop closure detection for large-scale multi-session graph-based SLAM. Proceedings of the IEEE\/RSJ International Conference on Intelligent Robots and Systems, Chicago, IL, USA.","DOI":"10.1109\/IROS.2014.6942926"},{"key":"ref_25","doi-asserted-by":"crossref","unstructured":"Gao, X., Wang, R., Demmel, N., and Cremers, D. (2018, January 1\u20135). LDSO: Direct sparse odometry with loop closure. Proceedings of the IEEE\/RSJ International Conference on Intelligent Robots and Systems (IROS), Madrid, Spain.","DOI":"10.1109\/IROS.2018.8593376"},{"key":"ref_26","doi-asserted-by":"crossref","first-page":"1113","DOI":"10.1177\/0278364904049393","article-title":"Simultaneous localization and map building in large-scale cyclic environments using the Atlas framework","volume":"23","author":"Bosse","year":"2004","journal-title":"Int. J. Robot. Res."},{"key":"ref_27","doi-asserted-by":"crossref","unstructured":"Lothe, P., Bourgeois, S., Dekeyser, F., Royer, E., and Dhome, M. (2009, January 20\u201325). Towards geographical referencing of monocular slam reconstruction using 3d city models: Application to real-time accurate vision-based localization. Proceedings of the 2009 IEEE Conference on Computer Vision and Pattern Recognition, Miami, FL, USA.","DOI":"10.1109\/CVPR.2009.5206662"},{"key":"ref_28","doi-asserted-by":"crossref","unstructured":"Albrecht, A., and Heide, N. (2018, January 16\u201317). Mapping and automatic post-processing of indoor environments by extending visual slam. Proceedings of the International Conference on Audio, Language and Image Processing (ICALIP), Shanghai, China.","DOI":"10.1109\/ICALIP.2018.8455239"},{"key":"ref_29","doi-asserted-by":"crossref","first-page":"47","DOI":"10.1016\/0921-8890(91)90014-C","article-title":"A robot exploration and mapping strategy based on a semantic hierarchy of spatial representations","volume":"8","author":"Kuipers","year":"1991","journal-title":"Robot. Auton. Syst."},{"key":"ref_30","unstructured":"Simmons, R., Apfelbaum, D., Burgard, W., Fox, D., Moors, M., Thrun, S., and Younes, H. (August, January 11). Coordination for multi-robot exploration and mapping. Proceedings of the Seventeenth AAAI Conference on Artificial Intelligence, Austin, TX, USA."},{"key":"ref_31","first-page":"27","article-title":"Voronoi-based space partitioning for coordinated multi-robot exploration","volume":"3","author":"Wu","year":"2007","journal-title":"J. Phys. Agents"},{"key":"ref_32","doi-asserted-by":"crossref","first-page":"24","DOI":"10.1186\/s40638-016-0055-x","article-title":"Mobile robots exploration through cnn-based reinforcement learning","volume":"3","author":"Tai","year":"2016","journal-title":"Robot. Biomim."},{"key":"ref_33","doi-asserted-by":"crossref","first-page":"1651","DOI":"10.1007\/s10514-018-9708-7","article-title":"Distributed inference-based multi-robot exploration","volume":"42","author":"Smith","year":"2018","journal-title":"Auton. Robot."},{"key":"ref_34","doi-asserted-by":"crossref","first-page":"440","DOI":"10.1109\/TITS.2009.2026317","article-title":"Real-time hierarchical outdoor SLAM based on stereovision and GPS fusion","volume":"10","author":"Schleicher","year":"2009","journal-title":"IEEE Trans. Intell. Transp. Syst."},{"key":"ref_35","doi-asserted-by":"crossref","first-page":"23365","DOI":"10.3390\/s141223365","article-title":"Performance analysis of the microsoft kinect sensor for 2D simultaneous localization and mapping (SLAM) techniques","volume":"14","author":"Kamarudin","year":"2014","journal-title":"Sensors"},{"key":"ref_36","doi-asserted-by":"crossref","unstructured":"Cheein, F.A.A., Toibero, J.M., di Sciascio, F., Carelli, R., and Pereira, F.L. (2010, January 14\u201317). Monte Carlo uncertainty maps-based for mobile robot autonomous SLAM navigation. Proceedings of the IEEE International Conference on Industrial Technology, Vi a del Mar, Chile.","DOI":"10.1109\/ICIT.2010.5472495"},{"key":"ref_37","doi-asserted-by":"crossref","unstructured":"Kim, S.H., Kim, J.G., and Yang, T.K. (2008, January 9\u201311). Autonomous SLAM technique by integrating Grid and Topology map. Proceedings of the International Conference on Smart Manufacturing Application, New York, NY, USA.","DOI":"10.1109\/ICSMA.2008.4505564"},{"key":"ref_38","unstructured":"Khan, D.A. (2011). Observable Autonomous SLAM in 2D Dynamic Environments. [Ph.D. Thesis, Carleton University]."},{"key":"ref_39","doi-asserted-by":"crossref","unstructured":"Stachniss, C. (2009). Robotic Mapping and Exploration, Springer.","DOI":"10.1007\/978-3-642-01097-2"},{"key":"ref_40","unstructured":"Yamauchi, B., Schultz, A., and Adams, W. (1998, January 20). Mobile robot exploration and map-building with continuous localization. Proceedings of the 1998 IEEE International Conference on Robotics and Automation (Cat. No. 98CH36146), Leuven, Belgium."},{"key":"ref_41","unstructured":"Williams, S.B., Dissanayake, G., and Durrant-Whyte, H. (2002, January 11\u201315). An efficient approach to the simultaneous localisation and mapping problem. Proceedings of the IEEE International Conference on Robotics and Automation (Cat. No. 02CH37292), Washington, DC, USA."},{"key":"ref_42","doi-asserted-by":"crossref","first-page":"966","DOI":"10.1109\/5.5968","article-title":"Active perception","volume":"76","author":"Bajcsy","year":"1988","journal-title":"Proc. IEEE"},{"key":"ref_43","unstructured":"Burgard, W., Fox, D., and Thrun, S. (1997, January 23\u201329). Active mobile robot localization. Proceedings of the Fifteenth International Joint Conference on Artifical Intelligence (IJCAI\u201997), Nagoya, Japan."},{"key":"ref_44","unstructured":"Arsenio, A., and Ribeiro, M.I. (1998, January 17). Active range sensing for mobile robot localization. Proceedings of the 1998 IEEE\/RSJ International Conference on Intelligent Robots and Systems. Innovations in Theory, Practice and Applications (Cat. No. 98CH36190), Victoria, BC, Canada."},{"key":"ref_45","doi-asserted-by":"crossref","first-page":"748","DOI":"10.1109\/70.964673","article-title":"Active global localization for a mobile robot using multiple hypothesis tracking","volume":"17","author":"Jensfelt","year":"2001","journal-title":"IEEE Trans. Robot. Autom."},{"key":"ref_46","unstructured":"Zhang, Z. (2020). Active Robot Vision: From State Estimation to Motion Planning. [Ph.D. Thesis, University of Zurich]."},{"key":"ref_47","doi-asserted-by":"crossref","unstructured":"Zhang, Z., and Scaramuzza, D. (2018, January 21\u201325). Perception-aware receding horizon navigation for MAVs. Proceedings of the 2018 IEEE International Conference on Robotics and Automation (ICRA), Brisbane, Australia.","DOI":"10.1109\/ICRA.2018.8461133"},{"key":"ref_48","doi-asserted-by":"crossref","unstructured":"Zhang, Z., and Scaramuzza, D. (2019, January 20\u201324). Beyond point clouds: Fisher information field for active visual localization. Proceedings of the 2019 International Conference on Robotics and Automation (ICRA), Montreal, QC, Canada.","DOI":"10.1109\/ICRA.2019.8793680"},{"key":"ref_49","unstructured":"Zhang, Z., and Scaramuzza, D. (2020). Fisher Information Field: An Efficient and Differentiable Map for Perception-aware Planning. arXiv."},{"key":"ref_50","doi-asserted-by":"crossref","first-page":"102308","DOI":"10.1016\/j.mechatronics.2019.102308","article-title":"PSD\u2013probabilistic algorithm for mobile robot 6D localization without natural and artificial landmarks based on 2.5 D map and a new type of laser scanner in GPS-denied scenarios","volume":"65","author":"Niewola","year":"2020","journal-title":"Mechatronics"},{"key":"ref_51","first-page":"405","article-title":"The interpretation of structure from motion","volume":"203","author":"Ullman","year":"1979","journal-title":"Proc. R. Soc. London Ser. B Biol. Sci."},{"key":"ref_52","unstructured":"Connolly, C. (1985, January 25\u201328). The determination of next best views. Proceedings of the IEEE international conference on robotics and automation, St. Louis, MI, USA."},{"key":"ref_53","unstructured":"O\u2019rourke, J. (1987). Art Gallery Theorems and Algorithms, Oxford University Press."},{"key":"ref_54","doi-asserted-by":"crossref","first-page":"257","DOI":"10.1007\/s10846-007-9164-7","article-title":"Optimal camera placement for automated surveillance tasks","volume":"50","author":"Bodor","year":"2007","journal-title":"J. Intell. Robot. Syst."},{"key":"ref_55","doi-asserted-by":"crossref","unstructured":"Nilsson, U., Ogren, P., and Thunberg, J. (2008, January 22\u201326). Optimal positioning of surveillance UGVs. Proceedings of the 2008 IEEE\/RSJ International Conference on Intelligent Robots and Systems, Nice, France.","DOI":"10.1109\/IROS.2008.4650851"},{"key":"ref_56","unstructured":"Indu, S., Chaudhury, S., Mittal, N.R., and Bhattacharyya, A. (September, January 30). Optimal sensor placement for surveillance of large spaces. Proceedings of the Third ACM\/IEEE International Conference on Distributed Smart Cameras (ICDSC), Como, Italy."},{"key":"ref_57","doi-asserted-by":"crossref","unstructured":"Gonzalez-Barbosa, J.J., Garc\u00eda-Ram\u00edrez, T., Salas, J., and Hurtado-Ramos, J.B. (2009, January 12\u201317). Optimal camera placement for total coverage. Proceedings of the IEEE International Conference on Robotics and Automation, Kobe, Japan.","DOI":"10.1109\/ROBOT.2009.5152761"},{"key":"ref_58","doi-asserted-by":"crossref","first-page":"1402","DOI":"10.1109\/JSEN.2011.2170833","article-title":"Particle swarm optimization inspired probability algorithm for optimal camera network placement","volume":"12","author":"Morsly","year":"2011","journal-title":"IEEE Sens. J."},{"key":"ref_59","unstructured":"Ar\u00e9valo, M.L.R. (2018). On the Uncertainty in Active Slam: Representation, Propagation and Monotonicity. [Ph.D. Thesis, Universidad de Zaragoza]."},{"key":"ref_60","unstructured":"Bourgault, F., Makarenko, A.A., Williams, S.B., Grocholsky, B., and Durrant-Whyte, H.F. (October, January 30). Information based adaptive robotic exploration. Proceedings of the IEEE\/RSJ international conference on intelligent robots and systems, Lausanne, Switzerland."},{"key":"ref_61","doi-asserted-by":"crossref","first-page":"93","DOI":"10.1007\/s10514-009-9130-2","article-title":"A Bayesian exploration-exploitation approach for optimal online sensing and planning with a visually guided mobile robot","volume":"27","author":"Brochu","year":"2009","journal-title":"Auton. Robot."},{"key":"ref_62","doi-asserted-by":"crossref","unstructured":"Umari, H., and Mukhopadhyay, S. (2017, January 24\u201328). Autonomous robotic exploration based on multiple rapidly-exploring randomized trees. Proceedings of the IEEE\/RSJ International Conference on Intelligent Robots and Systems (IROS), Vancouver, BC, Canada.","DOI":"10.1109\/IROS.2017.8202319"},{"key":"ref_63","doi-asserted-by":"crossref","first-page":"1699","DOI":"10.1109\/LRA.2019.2897343","article-title":"Efficient autonomous exploration planning of large-scale 3-D environments","volume":"4","author":"Selin","year":"2019","journal-title":"IEEE Robot. Autom. Lett."},{"key":"ref_64","unstructured":"Yamauchi, B. (1997, January 10\u201311). A frontier-based approach for autonomous exploration. Proceedings of the IEEE International Symposium on Computational Intelligence in Robotics and Automation CIRA\u201997.\u2019Towards New Computational Principles for Robotics and Automation\u2019, Monterey, CA, USA."},{"key":"ref_65","doi-asserted-by":"crossref","unstructured":"Yamauchi, B. (1998, January 9\u201313). Frontier-based exploration using multiple robots. Proceedings of the Second International Conference on Autonomous Agents, St. Paul, MI, USA.","DOI":"10.1145\/280765.280773"},{"key":"ref_66","doi-asserted-by":"crossref","first-page":"215","DOI":"10.1177\/0278364913494911","article-title":"Efficient frontier detection for robot exploration","volume":"33","author":"Keidar","year":"2014","journal-title":"Int. J. Robot. Res."},{"key":"ref_67","first-page":"1","article-title":"Der Plankalk\u00fcl","volume":"63","author":"Zuse","year":"1972","journal-title":"Ber. Gesellsch. Math. Datenverarbeit."},{"key":"ref_68","unstructured":"Sim, R., and Roy, N. (2005, January 18\u201322). Global a-optimal robot exploration in slam. Proceedings of the 2005 IEEE international conference on robotics and automation, Barcelona, Spain."},{"key":"ref_69","unstructured":"Topiwala, A., Inani, P., and Kathpal, A. (2018). Frontier based exploration for autonomous robot. arXiv."},{"key":"ref_70","unstructured":"Solanas, A., and Garcia, M.A. (October, January 28). Coordinated multi-robot exploration through unsupervised clustering of unknown space. Proceedings of the 2004 IEEE\/RSJ International Conference on Intelligent Robots and Systems (IROS) (IEEE Cat. No. 04CH37566), Sendai, Japan."},{"key":"ref_71","doi-asserted-by":"crossref","unstructured":"Faigl, J., and Kulich, M. (2013, January 25\u201327). On determination of goal candidates in frontier-based multi-robot exploration. Proceedings of the 2013 European Conference on Mobile Robots, Catalonia, Spain.","DOI":"10.1109\/ECMR.2013.6698844"},{"key":"ref_72","doi-asserted-by":"crossref","unstructured":"Gautam, A., Murthy, J.K., Kumar, G., Ram, S.A., Jha, B., and Mohan, S. (2015, January 9\u201312). Cluster, allocate, cover: An efficient approach for multi-robot coverage. Proceedings of the 2015 IEEE International Conference on Systems, Man, and Cybernetics, Hong Kong, China.","DOI":"10.1109\/SMC.2015.47"},{"key":"ref_73","doi-asserted-by":"crossref","unstructured":"Tang, Y., Cai, J., Chen, M., Yan, X., and Xie, Y. (2019, January 4\u20138). An autonomous exploration algorithm using environment-robot interacted traversability analysis. Proceedings of the 2019 IEEE\/RSJ International Conference on Intelligent Robots and Systems (IROS), Macau, China.","DOI":"10.1109\/IROS40897.2019.8967940"},{"key":"ref_74","doi-asserted-by":"crossref","unstructured":"Mobarhani, A., Nazari, S., Tamjidi, A.H., and Taghirad, H.D. (2011, January 25\u201330). Histogram based frontier exploration. Proceedings of the 2011 IEEE\/RSJ International Conference on Intelligent Robots and Systems, Francisco, CA, USA.","DOI":"10.1109\/IROS.2011.6048711"},{"key":"ref_75","doi-asserted-by":"crossref","unstructured":"Joho, D., Stachniss, C., Pfaff, P., and Burgard, W. (2007). Autonomous exploration for 3D map learning. Autonome Mobile Systeme 2007, Springer.","DOI":"10.1007\/978-3-540-74764-2_4"},{"key":"ref_76","doi-asserted-by":"crossref","unstructured":"Carrillo, H., Reid, I., and Castellanos, J.A. (2012, January 14\u201318). On the comparison of uncertainty criteria for active SLAM. Proceedings of the IEEE International Conference on Robotics and Automation, Saint Paul, MA, USA.","DOI":"10.1109\/ICRA.2012.6224890"},{"key":"ref_77","doi-asserted-by":"crossref","first-page":"829","DOI":"10.1109\/TRO.2018.2808902","article-title":"On the importance of uncertainty representation in active SLAM","volume":"34","author":"Neira","year":"2018","journal-title":"IEEE Trans. Robot."},{"key":"ref_78","doi-asserted-by":"crossref","first-page":"291","DOI":"10.1007\/s10846-013-9981-9","article-title":"Active SLAM and exploration with particle filters using Kullback-Leibler divergence","volume":"75","author":"Carlone","year":"2014","journal-title":"J. Intell. Robot. Syst."},{"key":"ref_79","doi-asserted-by":"crossref","unstructured":"Fairfield, N., and Wettergreen, D. (2010). Active SLAM and loop prediction with the segmented map using simplified models. Field and Service Robotics, Springer.","DOI":"10.1007\/978-3-642-13408-1_16"},{"key":"ref_80","first-page":"65","article-title":"Information gain-based exploration using rao-blackwellized particle filters","volume":"2","author":"Stachniss","year":"2005","journal-title":"Robot. Sci. Syst."},{"key":"ref_81","doi-asserted-by":"crossref","first-page":"323","DOI":"10.1080\/0013791X.2018.1512692","article-title":"Exploring the Accuracy of Joint-Distribution Approximations Given Partial Information","volume":"64","author":"Montiel","year":"2019","journal-title":"Eng. Econ."},{"key":"ref_82","doi-asserted-by":"crossref","unstructured":"Trivun, D., \u0160alaka, E., Osmankovi\u0107, D., Velagi\u0107, J., and Osmi\u0107, N. (2015, January 14\u201317). Active SLAM-based algorithm for autonomous exploration with mobile robot. Proceedings of the IEEE International Conference on Industrial Technology (ICIT), Hong Kong, China.","DOI":"10.1109\/ICIT.2015.7125079"},{"key":"ref_83","doi-asserted-by":"crossref","unstructured":"Bircher, A., Kamel, M., Alexis, K., Oleynikova, H., and Siegwart, R. (2016, January 16\u201321). Receding horizon \u201cnext-best-view\u201d planner for 3d exploration. Proceedings of the IEEE International Conference on Robotics and Automation (ICRA), Stockholm, Sweden.","DOI":"10.1109\/ICRA.2016.7487281"},{"key":"ref_84","doi-asserted-by":"crossref","unstructured":"Dai, A., Papatheodorou, S., Funk, N., Tzoumanikas, D., and Leutenegger, S. (2020). Fast Frontier-based Information-driven Autonomous Exploration with an MAV. arXiv.","DOI":"10.1109\/ICRA40945.2020.9196707"},{"key":"ref_85","doi-asserted-by":"crossref","unstructured":"Ravankar, A.A., Ravankar, A., Kobayashi, Y., and Emaru, T. (2018). Autonomous mapping and exploration with unmanned aerial vehicles using low cost sensors. Multidiscip. Digit. Publ. Inst. Proc., 4.","DOI":"10.3390\/ecsa-5-05753"},{"key":"ref_86","doi-asserted-by":"crossref","first-page":"611","DOI":"10.1007\/s11554-013-0386-6","article-title":"Efficient next-best-scan planning for autonomous 3D surface reconstruction of unknown objects","volume":"10","author":"Kriegel","year":"2015","journal-title":"J. Real Time Image Process."},{"key":"ref_87","doi-asserted-by":"crossref","first-page":"581","DOI":"10.1002\/wics.100","article-title":"Optimal experimental design","volume":"2","author":"Fedorov","year":"2010","journal-title":"Wiley Interdiscip. Rev. Comput. Stat."},{"key":"ref_88","unstructured":"Mei, Y., Lu, Y.H., Lee, C.G., and Hu, Y.C. (2006, January 15\u201319). Energy-efficient mobile robot exploration. Proceedings of the IEEE International Conference on Robotics and Automation, ICRA 2006, Orlando, FL, USA."},{"key":"ref_89","doi-asserted-by":"crossref","first-page":"10188","DOI":"10.3182\/20140824-6-ZA-1003.01275","article-title":"Autonomous exploration of large unknown indoor environments for dense 3D model building","volume":"47","year":"2014","journal-title":"IFAC Proc. Vol."},{"key":"ref_90","doi-asserted-by":"crossref","first-page":"1715","DOI":"10.1109\/LRA.2019.2897368","article-title":"Communication-efficient planning and mapping for multi-robot exploration in large environments","volume":"4","author":"Corah","year":"2019","journal-title":"IEEE Robot. Autom. Lett."},{"key":"ref_91","doi-asserted-by":"crossref","unstructured":"Shrestha, R., Tian, F.P., Feng, W., Tan, P., and Vaughan, R. (2019, January 20\u201324). Learned map prediction for enhanced mobile robot exploration. Proceedings of the International Conference on Robotics and Automation (ICRA), Montreal, QC, Canada.","DOI":"10.1109\/ICRA.2019.8793769"},{"key":"ref_92","doi-asserted-by":"crossref","unstructured":"Chaves, S.M., and Eustice, R.M. (2016, January 9\u201314). Efficient planning with the Bayes tree for active SLAM. Proceedings of the IEEE\/RSJ International Conference on Intelligent Robots and Systems (IROS), Daejeon, Korea.","DOI":"10.1109\/IROS.2016.7759686"},{"key":"ref_93","doi-asserted-by":"crossref","first-page":"239","DOI":"10.1080\/01969722.2018.1541599","article-title":"Real-time active SLAM and obstacle avoidance for an autonomous robot based on stereo vision","volume":"50","author":"Kalogeiton","year":"2019","journal-title":"Cybern. Syst."},{"key":"ref_94","doi-asserted-by":"crossref","unstructured":"Leung, C., Huang, S., and Dissanayake, G. (2008, January 22\u201326). Active SLAM in structured environments. Proceedings of the IEEE International conference on Robotics and Automation, Nice, France.","DOI":"10.1109\/ROBOT.2008.4543484"},{"key":"ref_95","first-page":"1321","article-title":"Path planning for active SLAM based on the D* algorithm with negative edge weights","volume":"48","author":"Seder","year":"2017","journal-title":"IEEE Trans. Syst. Man, Cybern. Syst."},{"key":"ref_96","doi-asserted-by":"crossref","unstructured":"Lu, L., Redondo, C., and Campoy, P. (2020). Optimal Frontier-Based Autonomous Exploration in Unconstructed Environment Using RGB-D Sensor. Sensors, 20.","DOI":"10.3390\/s20226507"},{"key":"ref_97","doi-asserted-by":"crossref","first-page":"459","DOI":"10.1080\/01691864.2013.763720","article-title":"A frontier-void-based approach for autonomous exploration in 3d","volume":"27","author":"Dornhege","year":"2013","journal-title":"Adv. Robot."},{"key":"ref_98","unstructured":"Zacharias, F., Borst, C., and Hirzinger, G. (November, January 29). Capturing robot workspace structure: Representing robot capabilities. Proceedings of the IEEE\/RSJ International Conference on Intelligent Robots and Systems, San Diego, CA, USA."},{"key":"ref_99","doi-asserted-by":"crossref","unstructured":"Zhu, C., Ding, R., Lin, M., and Wu, Y. (2015, January 9\u201311). A 3d frontier-based exploration tool for mavs. Proceedings of the IEEE 27th International Conference on Tools with Artificial Intelligence (ICTAI), Mare, Italy.","DOI":"10.1109\/ICTAI.2015.60"},{"key":"ref_100","unstructured":"Quigley, M., Conley, K., Gerkey, B., Faust, J., Foote, T., Leibs, J., Wheeler, R., and Ng, A.Y. (2009). ROS: An Open-Source Robot Operating System, ICRA Workshop on Open Source Software."},{"key":"ref_101","doi-asserted-by":"crossref","unstructured":"Senarathne, P., and Wang, D. (2016, January 23\u201327). Towards autonomous 3D exploration using surface frontiers. Proceedings of the 2016 IEEE International Symposium on Safety, Security, and Rescue Robotics (SSRR), Lausanne, Switzerland.","DOI":"10.1109\/SSRR.2016.7784274"},{"key":"ref_102","doi-asserted-by":"crossref","first-page":"34","DOI":"10.1109\/TRO.2006.889486","article-title":"Improved techniques for grid mapping with rao-blackwellized particle filters","volume":"23","author":"Grisetti","year":"2007","journal-title":"IEEE Trans. Robot."},{"key":"ref_103","doi-asserted-by":"crossref","unstructured":"Grisettiyz, G., Stachniss, C., and Burgard, W. (2005, January 18\u201322). Improving grid-based slam with rao-blackwellized particle filters by adaptive proposals and selective resampling. Proceedings of the IEEE International Conference on Robotics and Automation, Barcelona, Spain.","DOI":"10.1109\/ROBOT.2005.1570477"},{"key":"ref_104","doi-asserted-by":"crossref","first-page":"23","DOI":"10.1109\/100.580977","article-title":"The dynamic window approach to collision avoidance","volume":"4","author":"Fox","year":"1997","journal-title":"IEEE Robot. Autom. Mag."},{"key":"ref_105","doi-asserted-by":"crossref","unstructured":"Redding, G.M., and Wallace, B. (2013). Adaptive Spatial Alignment, Psychology Press.","DOI":"10.4324\/9780203774472"},{"key":"ref_106","unstructured":"LaValle, S.M. (1998). Rapidly-exploring random trees: A new tool for path planning. Res. Rep. 9811, Available online: https:\/\/www.cs.csustan.edu\/~xliang\/Courses\/CS4710-21S\/Papers\/06%20RRT.pdf."},{"key":"ref_107","doi-asserted-by":"crossref","first-page":"1512","DOI":"10.1109\/9.241565","article-title":"The stability of constrained receding horizon control","volume":"38","author":"Rawlings","year":"1993","journal-title":"IEEE Trans. Autom. Control."},{"key":"ref_108","unstructured":"Kwon, W.H., and Han, S.H. (2006). Receding Horizon Control: Model Predictive Control for State Models, Springer Science & Business Media."},{"key":"ref_109","doi-asserted-by":"crossref","first-page":"52","DOI":"10.1109\/MCS.2011.940571","article-title":"Receding horizon control","volume":"31","author":"Mattingley","year":"2011","journal-title":"IEEE Control. Syst. Mag."},{"key":"ref_110","doi-asserted-by":"crossref","first-page":"291","DOI":"10.1007\/s10514-016-9610-0","article-title":"Receding horizon path planning for 3D exploration and surface inspection","volume":"42","author":"Bircher","year":"2018","journal-title":"Auton. Robot."},{"key":"ref_111","doi-asserted-by":"crossref","first-page":"603","DOI":"10.1109\/34.1000236","article-title":"Mean shift: A robust approach toward feature space analysis","volume":"24","author":"Comaniciu","year":"2002","journal-title":"IEEE Trans. Pattern Anal. Mach. Intell."},{"key":"ref_112","unstructured":"Papachristos, C., Khattak, S., and Alexis, K. (June, January 29). Uncertainty-aware receding horizon exploration and mapping using aerial robots. Proceedings of the IEEE International Conference on Robotics and Automation (ICRA), Singapore."},{"key":"ref_113","doi-asserted-by":"crossref","unstructured":"Papachristos, C., Kamel, M., Popovi\u0107, M., Khattak, S., Bircher, A., Oleynikova, H., Dang, T., Mascarich, F., Alexis, K., and Siegwart, R. (2019). Autonomous exploration and inspection path planning for aerial robots using the robot operating system. Robot Operating System (ROS), Springer.","DOI":"10.1007\/978-3-319-91590-6_3"},{"key":"ref_114","doi-asserted-by":"crossref","unstructured":"Papachristos, C., Khattak, S., and Alexis, K. (2017, January 13\u201316). Autonomous exploration of visually-degraded environments using aerial robots. Proceedings of the International Conference on Unmanned Aircraft Systems (ICUAS), Miami, FL, USA.","DOI":"10.1109\/ICUAS.2017.7991510"},{"key":"ref_115","doi-asserted-by":"crossref","first-page":"113","DOI":"10.1007\/s10846-018-0798-4","article-title":"Applying frontier cells based exploration and Lazy Theta* path planning over single grid-based world representation for autonomous inspection of large 3D structures with an UAS","volume":"93","author":"Faria","year":"2019","journal-title":"J. Intell. Robot. Syst."},{"key":"ref_116","doi-asserted-by":"crossref","first-page":"533","DOI":"10.1613\/jair.2994","article-title":"Theta*: Any-angle path planning on grids","volume":"39","author":"Daniel","year":"2010","journal-title":"J. Artif. Intell. Res."},{"key":"ref_117","unstructured":"Uras, T., and Koenig, S. (2015, January 11\u201313). An empirical comparison of any-angle path-planning algorithms. Proceedings of the Eighth Annual Symposium on Combinatorial Search. Citeseer, Dead Sea, Israel."},{"key":"ref_118","doi-asserted-by":"crossref","unstructured":"Nash, A., Koenig, S., and Tovey, C. (2010, January 11\u201315). Lazy Theta*: Any-angle path planning and path length analysis in 3D. Proceedings of the Twenty-Fourth AAAI Conference on Artificial Intelligence. Citeseer, Atlanta, GA, USA.","DOI":"10.1609\/aaai.v24i1.7566"},{"key":"ref_119","first-page":"85","article-title":"Any-angle path planning","volume":"34","author":"Nash","year":"2013","journal-title":"AI Mag."},{"key":"ref_120","doi-asserted-by":"crossref","first-page":"121","DOI":"10.1002\/rob.21757","article-title":"An architecture for robust UAV navigation in GPS-denied areas","volume":"35","author":"Ragel","year":"2018","journal-title":"J. Field Robot."},{"key":"ref_121","doi-asserted-by":"crossref","unstructured":"Deng, X., Zhang, Z., Sintov, A., Huang, J., and Bretl, T. (2018, January 21\u201325). Feature-constrained active visual SLAM for mobile robot navigation. Proceedings of the 2018 IEEE International Conference on Robotics and Automation (ICRA), Brisbane, Australia.","DOI":"10.1109\/ICRA.2018.8460721"},{"key":"ref_122","unstructured":"Holz, D., Basilico, N., Amigoni, F., and Behnke, S. (2010, January 7\u20139). Evaluating the efficiency of frontier-based exploration strategies. Proceedings of the ISR (41st International Symposium on Robotics) and ROBOTIK 2010 (6th German Conference on Robotics). VDE, Munich, Germany."},{"key":"ref_123","unstructured":"Suresh, S., Sodhi, P., Mangelson, J.G., Wettergreen, D., and Kaess, M. (June, January 30). Active SLAM using 3D submap saliency for underwater volumetric exploration. Proceedings of the IEEE International Conference on Robotics and Automation (ICRA), Paris, France."},{"key":"ref_124","doi-asserted-by":"crossref","first-page":"829","DOI":"10.1177\/0278364902021010834","article-title":"Navigation strategies for exploring indoor environments","volume":"21","author":"Latombe","year":"2002","journal-title":"Int. J. Robot. Res."},{"key":"ref_125","unstructured":"Stachniss, C., Hahnel, D., and Burgard, W. (October, January 28). Exploration with active loop-closing for FastSLAM. Proceedings of the IEEE\/RSJ International Conference on Intelligent Robots and Systems (IROS) (IEEE Cat. No. 04CH37566), Sendai, Japan."},{"key":"ref_126","doi-asserted-by":"crossref","first-page":"79","DOI":"10.1214\/aoms\/1177729694","article-title":"On Information and Sufficiency","volume":"22","author":"Kullback","year":"1951","journal-title":"Ann. Math. Stat."},{"key":"ref_127","doi-asserted-by":"crossref","unstructured":"Valencia, R., and Andrade-Cetto, J. (2018). Active pose SLAM. Mapping, Planning and Exploration with Pose SLAM, Springer.","DOI":"10.1007\/978-3-319-60603-3"},{"key":"ref_128","doi-asserted-by":"crossref","first-page":"78","DOI":"10.1109\/TRO.2009.2034435","article-title":"Information-based compact pose SLAM","volume":"26","author":"Ila","year":"2009","journal-title":"IEEE Trans. Robot."},{"key":"ref_129","doi-asserted-by":"crossref","first-page":"1100","DOI":"10.1109\/TRO.2006.886264","article-title":"Exactly sparse delayed-state filters for view-based SLAM","volume":"22","author":"Eustice","year":"2006","journal-title":"IEEE Trans. Robot."},{"key":"ref_130","unstructured":"Montemerlo, M., Thrun, S., Koller, D., and Wegbreit, B. (August, January 28). FastSLAM: A factored solution to the simultaneous localization and mapping problem. Proceedings of the AAAI National Conference on Artificial Intelligence, Edmonton, Alberta."},{"key":"ref_131","doi-asserted-by":"crossref","first-page":"100","DOI":"10.1109\/TSSC.1968.300136","article-title":"A formal basis for the heuristic determination of minimum cost paths","volume":"4","author":"Hart","year":"1968","journal-title":"IEEE Trans. Syst. Sci. Cybern."},{"key":"ref_132","unstructured":"Mammolo, D. (2019). Active SLAM in Crowded Environments. [Master\u2019s Thesis, Autonomous Systems Lab]."},{"key":"ref_133","doi-asserted-by":"crossref","first-page":"235","DOI":"10.1007\/s10514-017-9662-9","article-title":"Autonomous robotic exploration using a utility function based on R\u00e9nyi\u2019s general theory of entropy","volume":"42","author":"Carrillo","year":"2018","journal-title":"Auton. Robot."},{"key":"ref_134","doi-asserted-by":"crossref","first-page":"1133","DOI":"10.1007\/s10514-017-9682-5","article-title":"Long-Term Online Multi-Session Graph-Based SPLAM with Memory Management","volume":"42","author":"Michaud","year":"2018","journal-title":"Auton. Robot."},{"key":"ref_135","unstructured":"Blaer, P.S., and Allen, P.K. (November, January 29). Data acquisition and view planning for 3-D modeling tasks. Proceedings of the IEEE\/RSJ International Conference on Intelligent Robots and Systems, San Diego, CA, USA."},{"key":"ref_136","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1007\/s12518-013-0120-x","article-title":"UAV for 3D mapping applications: A review","volume":"6","author":"Nex","year":"2014","journal-title":"Appl. Geomat."},{"key":"ref_137","doi-asserted-by":"crossref","first-page":"181","DOI":"10.1016\/j.robot.2003.09.004","article-title":"An autonomous mobile robot with a 3D laser range finder for 3D exploration and digitalization of indoor environments","volume":"45","author":"Surmann","year":"2003","journal-title":"Robot. Auton. Syst."},{"key":"ref_138","doi-asserted-by":"crossref","first-page":"129","DOI":"10.1016\/0146-664X(82)90104-6","article-title":"Geometric modeling using octree encoding","volume":"19","author":"Meagher","year":"1982","journal-title":"Comput. Graph. Image Process."},{"key":"ref_139","doi-asserted-by":"crossref","unstructured":"Shen, S., Michael, N., and Kumar, V. (2012, January 14\u201318). Autonomous indoor 3D exploration with a micro-aerial vehicle. Proceedings of the IEEE international conference on robotics and automation, Saint Paul, MA, USA.","DOI":"10.1109\/ICRA.2012.6225146"},{"key":"ref_140","doi-asserted-by":"crossref","first-page":"589","DOI":"10.1109\/3468.867866","article-title":"A next-best-view system for autonomous 3-D object reconstruction","volume":"30","author":"Banta","year":"2000","journal-title":"IEEE Trans. Syst. Man Cybern. Part Syst. Hum."},{"key":"ref_141","doi-asserted-by":"crossref","unstructured":"Secil, S., Turgut, K., Soyleyici, C., Ozkan, M., Parlaktuna, O., Dutagaci, H., and Parlaktuna, M. (2017, January 22\u201324). A robotic system for autonomous 3-D surface reconstruction of objects. Proceedings of the 3rd International Conference on Control, Automation and Robotics (ICCAR), Nagoya, Japan.","DOI":"10.1109\/ICCAR.2017.7942684"},{"key":"ref_142","doi-asserted-by":"crossref","first-page":"1810","DOI":"10.1109\/TASE.2018.2807787","article-title":"Active vision via extremum seeking for robots in unstructured environments: Applications in object recognition and manipulation","volume":"15","author":"Calli","year":"2018","journal-title":"IEEE Trans. Autom. Sci. Eng."},{"key":"ref_143","doi-asserted-by":"crossref","unstructured":"Zhang, C., and Ord\u00f3\u00f1ez, R. (2011). Extremum-Seeking Control and Applications: A Numerical Optimization-Based Approach, Springer Science & Business Media.","DOI":"10.1007\/978-1-4471-2224-1_2"},{"key":"ref_144","doi-asserted-by":"crossref","first-page":"86","DOI":"10.1016\/j.robot.2014.12.006","article-title":"Semantic mapping for mobile robotics tasks: A survey","volume":"66","author":"Kostavelis","year":"2015","journal-title":"Robot. Auton. Syst."},{"key":"ref_145","doi-asserted-by":"crossref","unstructured":"Civera, J., G\u00e1lvez-L\u00f3pez, D., Riazuelo, L., Tard\u00f3s, J.D., and Montiel, J.M.M. (2011, January 25\u201330). Towards semantic SLAM using a monocular camera. Proceedings of the 2011 IEEE\/RSJ International Conference on Intelligent Robots and Systems, San Francisco, CA, USA.","DOI":"10.1109\/IROS.2011.6094648"},{"key":"ref_146","doi-asserted-by":"crossref","unstructured":"Bowman, S.L., Atanasov, N., Daniilidis, K., and Pappas, G.J. (June, January 29). Probabilistic data association for semantic slam. Proceedings of the 2017 IEEE international conference on robotics and automation (ICRA), Singapore.","DOI":"10.1109\/ICRA.2017.7989203"},{"key":"ref_147","doi-asserted-by":"crossref","first-page":"60704","DOI":"10.1109\/ACCESS.2020.2983121","article-title":"VPS-SLAM: Visual Planar Semantic SLAM for Aerial Robotic Systems","volume":"8","author":"Bavle","year":"2020","journal-title":"IEEE Access"},{"key":"ref_148","doi-asserted-by":"crossref","unstructured":"Ekvall, S., Jensfelt, P., and Kragic, D. (2006, January 9\u201315). Integrating active mobile robot object recognition and slam in natural environments. Proceedings of the 2006 IEEE\/RSJ International Conference on Intelligent Robots and Systems, Beijing, China.","DOI":"10.1109\/IROS.2006.282389"},{"key":"ref_149","unstructured":"Wu, Y., Zhang, Y., Zhu, D., Chen, X., Coleman, S., Sun, W., Hu, X., and Deng, Z. (2020). Object-Driven Active Mapping for More Accurate Object Pose Estimation and Robotic Grasping. arXiv."},{"key":"ref_150","doi-asserted-by":"crossref","first-page":"26","DOI":"10.1109\/MSP.2017.2743240","article-title":"Deep reinforcement learning: A brief survey","volume":"34","author":"Arulkumaran","year":"2017","journal-title":"IEEE Signal Process. Mag."},{"key":"ref_151","unstructured":"Zhu, Y., Mottaghi, R., Kolve, E., Lim, J.J., Gupta, A., Fei-Fei, L., and Farhadi, A. (June, January 29). Target-driven visual navigation in indoor scenes using deep reinforcement learning. Proceedings of the IEEE International Conference on Robotics and Automation (ICRA), Singapore."},{"key":"ref_152","unstructured":"Sutton, R.S., and Barto, A.G. (2018). Reinforcement Learning: An Introduction, MIT Press."},{"key":"ref_153","doi-asserted-by":"crossref","unstructured":"Iriondo, A., Lazkano, E., Susperregi, L., Urain, J., Fernandez, A., and Molina, J. (2019). Pick and place operations in logistics using a mobile manipulator controlled with deep reinforcement learning. Appl. Sci., 9.","DOI":"10.3390\/app9020348"},{"key":"ref_154","doi-asserted-by":"crossref","first-page":"135426","DOI":"10.1109\/ACCESS.2020.3011438","article-title":"A survey on visual navigation for artificial agents with deep reinforcement learning","volume":"8","author":"Zeng","year":"2020","journal-title":"IEEE Access"},{"key":"ref_155","doi-asserted-by":"crossref","first-page":"263","DOI":"10.1007\/s11370-019-00310-w","article-title":"Path planning for active SLAM based on deep reinforcement learning under unknown environments","volume":"13","author":"Wen","year":"2020","journal-title":"Intell. Serv. Robot."},{"key":"ref_156","doi-asserted-by":"crossref","unstructured":"Tai, L., and Liu, M. (2016, January 6\u201310). A robot exploration strategy based on q-learning network. Proceedings of the 2016 IEEE International Conference on Real-Time Computing and Robotics (rcar), Hokkaido, Japan.","DOI":"10.1109\/RCAR.2016.7784001"},{"key":"ref_157","doi-asserted-by":"crossref","first-page":"610","DOI":"10.1109\/LRA.2019.2891991","article-title":"Deep reinforcement learning robot for search and rescue applications: Exploration in unknown cluttered environments","volume":"4","author":"Niroui","year":"2019","journal-title":"IEEE Robot. Autom. Lett."},{"key":"ref_158","doi-asserted-by":"crossref","unstructured":"Tai, L., and Liu, M. (2016). Towards cognitive exploration through deep reinforcement learning for mobile robots. arXiv.","DOI":"10.1186\/s40638-016-0055-x"},{"key":"ref_159","doi-asserted-by":"crossref","first-page":"2064","DOI":"10.1109\/TNNLS.2019.2927869","article-title":"Deep reinforcement learning-based automatic exploration for navigation in unknown environment","volume":"31","author":"Li","year":"2019","journal-title":"IEEE Trans. Neural Netw. Learn. Syst."},{"key":"ref_160","doi-asserted-by":"crossref","unstructured":"Zhu, D., Li, T., Ho, D., Wang, C., and Meng, M.Q.H. (2018, January 21\u201325). Deep reinforcement learning supervised autonomous exploration in office environments. Proceedings of the 2018 IEEE International Conference on Robotics and Automation (ICRA), Brisbane, Australia.","DOI":"10.1109\/ICRA.2018.8463213"},{"key":"ref_161","doi-asserted-by":"crossref","unstructured":"Ly, L., and Tsai, Y.H.R. (2019, January 20\u201324). Autonomous exploration, reconstruction, and surveillance of 3d environments aided by deep learning. Proceedings of the International Conference on Robotics and Automation (ICRA), Montreal, QC, Canada.","DOI":"10.1109\/ICRA.2019.8794426"},{"key":"ref_162","doi-asserted-by":"crossref","first-page":"849","DOI":"10.1177\/0278364914561102","article-title":"Planning in the continuous domain: A generalized belief space approach for autonomous navigation in unknown environments","volume":"34","author":"Indelman","year":"2015","journal-title":"Int. J. Robot. Res."},{"key":"ref_163","doi-asserted-by":"crossref","unstructured":"Liu, L., Chattopadhyay, A., and Mitra, U. (2017, January 3\u20136). On exploiting spectral properties for solving MDP with large state space. Proceedings of the 2017 55th Annual Allerton Conference on Communication, Control, and Computing (Allerton), Monticello, IL, USA.","DOI":"10.1109\/ALLERTON.2017.8262875"},{"key":"ref_164","doi-asserted-by":"crossref","first-page":"49089","DOI":"10.1109\/ACCESS.2018.2854283","article-title":"A deep hierarchical reinforcement learning algorithm in partially observable Markov decision processes","volume":"6","author":"Le","year":"2018","journal-title":"IEEE Access"},{"key":"ref_165","doi-asserted-by":"crossref","unstructured":"Jeong, J., Yoon, T.S., and Park, J.B. (2018). Towards a meaningful 3D map using a 3D lidar and a camera. Sensors, 18.","DOI":"10.3390\/s18082571"},{"key":"ref_166","doi-asserted-by":"crossref","unstructured":"Sutantyo, D., Levi, P., M\u00f6slinger, C., and Read, M. (2013, January 4\u20137). Collective-adaptive l\u00e9vy flight for underwater multi-robot exploration. Proceedings of the IEEE International Conference on Mechatronics and Automation, Kagawa, Japan.","DOI":"10.1109\/ICMA.2013.6617961"},{"key":"ref_167","unstructured":"Shen, Z., Song, J., Mittal, K., and Gupta, S. (2017, January 17\u201321). Autonomous 3-D mapping and safe-path planning for underwater terrain reconstruction using multi-level coverage trees. Proceedings of the OCEANS Anchorage, Anchorage, Alaska."},{"key":"ref_168","doi-asserted-by":"crossref","unstructured":"Martins, A., Almeida, J., Almeida, C., Dias, A., Dias, N., Aaltonen, J., Heininen, A., Koskinen, K.T., Rossi, C., and Dominguez, S. (2018, January 1\u20135). UX 1 system design-A robotic system for underwater mining exploration. Proceedings of the IEEE\/RSJ International Conference on Intelligent Robots and Systems (IROS), Madrid, Spain.","DOI":"10.1109\/IROS.2018.8593999"},{"key":"ref_169","first-page":"1","article-title":"Robotic mapping: A survey","volume":"1","author":"Thrun","year":"2002","journal-title":"Explor. Artif. Intell. New Millenn."},{"key":"ref_170","doi-asserted-by":"crossref","first-page":"55","DOI":"10.1007\/s10462-012-9365-8","article-title":"Visual simultaneous localization and mapping: A survey","volume":"43","year":"2015","journal-title":"Artif. Intell. Rev."},{"key":"ref_171","unstructured":"Yu, W., and Amigoni, F. (2014, January 14\u201318). Standard for robot map data representation for navigation. Proceedings of the IROS (IEEE\/RSJ International Conference on Intelligent Robots and Systems) Workshop on \u201cStandardized Knowledge Representation and Ontologies for Robotics and Automation\u201d, Chicago, IL, USA."},{"key":"ref_172","doi-asserted-by":"crossref","first-page":"31","DOI":"10.1109\/MITS.2010.939925","article-title":"A tutorial on graph-based SLAM","volume":"2","author":"Grisetti","year":"2010","journal-title":"IEEE Intell. Transp. Syst. Mag."},{"key":"ref_173","unstructured":"Fraundorfer, F., Engels, C., and Nist\u00e9r, D. (November, January 29). Topological mapping, localization and navigation using image collections. Proceedings of the IEEE\/RSJ International Conference on Intelligent Robots and Systems, San Diego, CA, USA."},{"key":"ref_174","doi-asserted-by":"crossref","unstructured":"Angeli, A., Doncieux, S., Meyer, J.A., and Filliat, D. (2008, January 22\u201326). Incremental vision-based topological SLAM. Proceedings of the IEEE\/RSJ International Conference on Intelligent Robots and Systems, Nice, France.","DOI":"10.1109\/IROS.2008.4650675"},{"key":"ref_175","doi-asserted-by":"crossref","first-page":"259","DOI":"10.1109\/TRO.2008.918049","article-title":"Toward a unified Bayesian approach to hybrid metric\u2013topological SLAM","volume":"24","author":"Blanco","year":"2008","journal-title":"IEEE Trans. Robot."},{"key":"ref_176","doi-asserted-by":"crossref","first-page":"271","DOI":"10.1177\/0278364911433617","article-title":"A unified bayesian framework for global localization and slam in hybrid metric\/topological maps","volume":"31","author":"Tully","year":"2012","journal-title":"Int. J. Robot. Res."},{"key":"ref_177","doi-asserted-by":"crossref","unstructured":"Chen, Y., Huang, S., Fitch, R., Zhao, L., Yu, H., and Yang, D. (2019, January 22\u201324). On-line 3D active pose-graph SLAM based on key poses using graph topology and sub-maps. Proceedings of the International Conference on Robotics and Automation (ICRA), Montreal, QC, USA.","DOI":"10.1109\/ICRA.2019.8793632"},{"key":"ref_178","doi-asserted-by":"crossref","first-page":"472","DOI":"10.1007\/BF01190850","article-title":"Landmark-based robot navigation","volume":"13","author":"Lazanas","year":"1995","journal-title":"Algorithmica"},{"key":"ref_179","doi-asserted-by":"crossref","first-page":"1928","DOI":"10.3390\/s17081928","article-title":"Landmark-based homing navigation using omnidirectional depth information","volume":"17","author":"Lee","year":"2017","journal-title":"Sensors"},{"key":"ref_180","doi-asserted-by":"crossref","unstructured":"Kim, B., Kang, C.M., Kim, J., Lee, S.H., Chung, C.C., and Choi, J.W. (2017, January 16\u201319). Probabilistic vehicle trajectory prediction over occupancy grid map via recurrent neural network. Proceedings of the IEEE 20th International Conference on Intelligent Transportation Systems (ITSC), Yokohama, Japan.","DOI":"10.1109\/ITSC.2017.8317943"},{"key":"ref_181","doi-asserted-by":"crossref","unstructured":"Mar\u0131n-Plaza, P., Beltr\u00e1n, J., Hussein, A., Musleh, B., Mart\u0131n, D., de la Escalera, A., and Armingol, J.M. (2016, January 27\u201329). Stereo vision-based local occupancy grid map for autonomous navigation in ros. Proceedings of the 11th International Joint Conference on Computer Vision, Imaging and Computer Graphics Theory and Applications VISIGRAPP, Rome, Italy.","DOI":"10.5220\/0005787007010706"},{"key":"ref_182","unstructured":"Han, S.J., Kim, J., and Choi, J. (July, January 28). Effective height-grid map building using inverse perspective image. Proceedings of the IEEE Intelligent Vehicles Symposium (IV), Seoul, Korea."},{"key":"ref_183","doi-asserted-by":"crossref","first-page":"189","DOI":"10.1007\/s10514-012-9321-0","article-title":"OctoMap: An efficient probabilistic 3D mapping framework based on octrees","volume":"34","author":"Hornung","year":"2013","journal-title":"Auton. Robot."},{"key":"ref_184","unstructured":"Matthies, L., and Elfes, A. (1988, January 24\u201329). Integration of sonar and stereo range data using a grid-based representation. Proceedings of the 1988 IEEE International Conference on Robotics and Automation, Philadelphia, PA, USA."},{"key":"ref_185","doi-asserted-by":"crossref","unstructured":"Moravec, H.P. (1989). Sensor fusion in certainty grids for mobile robots. Sensor Devices and Systems for Robotics, Springer.","DOI":"10.1007\/978-3-642-74567-6_19"},{"key":"ref_186","doi-asserted-by":"crossref","unstructured":"Marder-Eppstein, E., Berger, E., Foote, T., Gerkey, B., and Konolige, K. (2010, January 3\u20138). The office marathon: Robust navigation in an indoor office environment. Proceedings of the IEEE International Conference on Robotics and Automation, Anchorage, Alaska.","DOI":"10.1109\/ROBOT.2010.5509725"},{"key":"ref_187","doi-asserted-by":"crossref","unstructured":"Lu, D.V., Hershberger, D., and Smart, W.D. (2014, January 14\u201318). Layered costmaps for context-sensitive navigation. Proceedings of the IEEE\/RSJ International Conference on Intelligent Robots and Systems, Chicago, IL, USA.","DOI":"10.1109\/IROS.2014.6942636"},{"key":"ref_188","doi-asserted-by":"crossref","first-page":"789","DOI":"10.1109\/LRA.2017.2651385","article-title":"Geometric map-assisted localization for mobile robots based on uniform-Gaussian distribution","volume":"2","author":"Jiang","year":"2017","journal-title":"IEEE Robot. Autom. Lett."},{"key":"ref_189","doi-asserted-by":"crossref","unstructured":"Maturana, D., Chou, P.W., Uenoyama, M., and Scherer, S. (2018). Real-time semantic mapping for autonomous off-road navigation. Field and Service Robotics, Springer.","DOI":"10.1007\/978-3-319-67361-5_22"},{"key":"ref_190","doi-asserted-by":"crossref","unstructured":"Colares, R.G., and Chaimowicz, L. (2016, January 4\u20138). The next frontier: Combining information gain and distance cost for decentralized multi-robot exploration. Proceedings of the 31st Annual ACM Symposium on Applied Computing, Pisa, Italy.","DOI":"10.1145\/2851613.2851706"}],"container-title":["Sensors"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/1424-8220\/21\/7\/2445\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,13]],"date-time":"2025-10-13T13:58:08Z","timestamp":1760363888000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/1424-8220\/21\/7\/2445"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2021,4,2]]},"references-count":190,"journal-issue":{"issue":"7","published-online":{"date-parts":[[2021,4]]}},"alternative-id":["s21072445"],"URL":"https:\/\/doi.org\/10.3390\/s21072445","relation":{},"ISSN":["1424-8220"],"issn-type":[{"value":"1424-8220","type":"electronic"}],"subject":[],"published":{"date-parts":[[2021,4,2]]}}}