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ILA, V. POLOK, L. ŠOLONY, M. SVOBODA, P.
Original Title
SLAM++-A Highly Efficient and Temporally Scalable Incremental SLAM Framework
Type
journal article in Web of Science
Language
English
Original Abstract
The most common way to deal with the uncertainty present in noisy sensorial perception and action is to model the problem with a probabilistic framework. Maximum likelihood estimation (MLE) is a well-known estimation method used in many robotic and computer vision applications. Under Gaussian assumption, the MLE converts to a nonlinear least squares (NLS) problem. Efficient solutions to NLS exist and they are based on iteratively solving sparse linear systems until convergence. In general, the existing solutions provide only an estimation of the mean state vector, the resulting covariance being computationally too expensive to recover. Nevertheless, in many simultaneous localisation and mapping (SLAM) applications, knowing only the mean vector is not enough. Data association, obtaining reduced state representations, active decisions and next best view are only a few of the applications that require fast state covariance recovery. Furthermore, computer vision and robotic applications are in general performed online. In this case, the state is updated and recomputed every step and its size is continuously growing, therefore, the estimation process may become highly computationally demanding. This paper introduces a general framework for incremental MLE called SLAM++, which fully benefits from the incremental nature of the online applications, and provides efficient estimation of both the mean and the covariance of the estimate. Based on that, we propose a strategy for maintaining a sparse and scalable state representation for large scale mapping. SLAM++ differs from existing implementations by performing all the matrix operations by blocks. This led to extremely fast matrix manipulation and arithmetic operations used in NLS. Even though this paper tests SLAM++ efficiency on SLAM problems, its applicability remains general.
Keywords
nonlinear least squares, incremental covariance recovery, long-term SLAM, loop closure, compact state representation
Authors
ILA, V.; POLOK, L.; ŠOLONY, M.; SVOBODA, P.
Released
1. 2. 2017
ISBN
1741-3176
Periodical
INTERNATIONAL JOURNAL OF ROBOTICS RESEARCH
Year of study
2017
Number
1
State
United Kingdom of Great Britain and Northern Ireland
Pages from
210
Pages to
230
Pages count
21
URL
https://doi.org/10.1177/0278364917691110
BibTex
@article{BUT130989, author="Viorela Simona {Ila} and Lukáš {Polok} and Marek {Šolony} and Pavel {Svoboda}", title="SLAM++-A Highly Efficient and Temporally Scalable Incremental SLAM Framework", journal="INTERNATIONAL JOURNAL OF ROBOTICS RESEARCH", year="2017", volume="2017", number="1", pages="210--230", doi="10.1177/0278364917691110", issn="1741-3176", url="https://doi.org/10.1177/0278364917691110" }