Discrete-Continuous Smoothing and Mapping
Discrete-Continuous Smoothing and Mapping
复制标题
离散连续平滑和映射
DOI:
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发表时间:
2022
影响因子:
5.2
通讯作者:
J. Leonard
中科院分区:
文献类型:
--
作者:
K. Doherty;Ziqi Lu;Kurran Singh;J. Leonard
We describe a general approach for maximum a posteriori (MAP) inference in a class of discrete-continuous factor graphs commonly encountered in robotics applications. While there are openly available tools providing flexible and easy-to-use interfaces for specifying and solving inference problems formulated in terms of either discrete or continuous graphical models, at present, no similarly general tools exist enabling the same functionality for hybrid discrete-continuous problems. We aim to address this problem. In particular, we provide a library, DC-SAM, extending existing tools for inference problems defined in terms of factor graphs to the setting of discrete-continuous models. A key contribution of our work is a novel solver for efficiently recovering approximate solutions to discrete-continuous inference problems. The key insight to our approach is that while joint inference over continuous and discrete state spaces is often hard, many commonly encountered discrete-continuous problems can naturally be split into a “discrete part” and a “continuous part” that can individually be solved easily. Leveraging this structure, we optimize discrete and continuous variables in an alternating fashion. In consequence, our proposed work enables straightforward representation of and approximate inference in discrete-continuous graphical models. We also provide a method to approximate the uncertainty in estimates of both discrete and continuous variables. We demonstrate the versatility of our approach through its application to distinct robot perception applications, including robust pose graph optimization, and object-based mapping and localization.
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DOI:
10.1109/iros.2018.8593753
发表时间:
2018-10
期刊:
2018 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS)
影响因子:
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作者:
Jinkun Wang;Brendan Englot
通讯作者:
Jinkun Wang;Brendan Englot
DOI:
10.1561/0600000084
发表时间:
2019
期刊:
Found. Trends Comput. Graph. Vis.
影响因子:
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作者:
Bogdan Savchynskyy
通讯作者:
Bogdan Savchynskyy
DOI:
10.1109/icra.2018.8460217
发表时间:
2018-05
期刊:
2018 IEEE International Conference on Robotics and Automation (ICRA)
影响因子:
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作者:
Joshua G. Mangelson;Derrick Dominic;R. Eustice;Ram Vasudevan
通讯作者:
Joshua G. Mangelson;Derrick Dominic;R. Eustice;Ram Vasudevan
DOI:
10.1146/annurev-control-091420-084139
发表时间:
2021-01-01
期刊:
ANNUAL REVIEW OF CONTROL, ROBOTICS, AND AUTONOMOUS SYSTEMS, VOL 4, 2021
影响因子:
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作者:
Garrett, Caelan Reed;Chitnis, Rohan;Lozano-Perez, Tomas
通讯作者:
Lozano-Perez, Tomas