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O-POCO: Online POint cloud COmpression mapping for visual odometry and SLAM

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Original languageEnglish
Title of host publication2017 IEEE International Conference on Robotics and Automation (ICRA 2017)
Publisher or commissioning bodyInstitute of Electrical and Electronics Engineers (IEEE)
Number of pages6
ISBN (Print)9781509046348
StateAccepted/In press - 1 Mar 2017
EventIEEE International Conference on Robotics and Automation (ICRA) 2017 - , Singapore


ConferenceIEEE International Conference on Robotics and Automation (ICRA) 2017


This paper presents O-POCO, a visual odometry and SLAM system that makes online decisions regarding what to map and what to ignore. It takes a point cloud from classical SfM and aims to sample it on-line by selecting map features useful for future 6D relocalisation. We use the camera’s traveled trajectory to compartamentalize the point cloud, along with visual and spatial information to sample and compress the map. We propose and evaluate a number of different information layers such as the descriptor information’s relative entropy, map-feature occupancy grid, and the point cloud’s geometry error. We compare our proposed system against both SfM, and online and offline ORB-SLAM using publicly available datasets in addition to our own. Results show that our online compression strategy is capable of outperforming the baseline even for conditions when the number of features per key-frame used for mapping is four times less.


IEEE International Conference on Robotics and Automation (ICRA) 2017

Duration29 May 20173 Jun 2017
Location of eventSingapore
CountrySingaporeDegree of recognitionInternational event

Event: Conference

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    Accepted author manuscript, 5 MB, PDF-document

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