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RSS-Net: weakly-supervised multi-class semantic segmentation with FMCW radar

Abstract:
This paper presents an efficient annotation procedure and an application thereof to end-to-end, rich semantic segmentation of the sensed environment using Frequency-Modulated Continuous-Wave scanning radar. We advocate radar over the traditional sensors used for this task as it operates at longer ranges and is substantially more robust to adverse weather and illumination conditions. We avoid laborious manual labelling by exploiting the largest radar-focused urban autonomy dataset collected to date, correlating radar scans with RGB cameras and LiDAR sensors, for which semantic segmentation is an already consolidated procedure. The training procedure leverages a stateof-the-art natural image segmentation system which is publicly available and as such, in contrast to previous approaches, allows for the production of copious labels for the radar stream by incorporating four camera and two LiDAR streams. Additionally, the losses are computed taking into account labels to the radar sensor horizon by accumulating LiDAR returns along a posechain ahead and behind of the current vehicle position. Finally, we present the network with multi-channel radar scan inputs in order to deal with ephemeral and dynamic scene objects.
Publication status:
Published
Peer review status:
Peer reviewed

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Publisher copy:
10.1109/IV47402.2020.9304674

Authors


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Institution:
University of Oxford
Division:
MPLS
Department:
Engineering Science
Role:
Author
More by this author
Institution:
University of Oxford
Division:
MPLS
Department:
Engineering Science
Role:
Author
ORCID:
0000-0001-6121-5839
More by this author
Institution:
University of Oxford
Division:
MPLS
Department:
Engineering Science
Role:
Author
More by this author
Institution:
University of Oxford
Division:
MPLS
Department:
Engineering Science
Role:
Author


Publisher:
IEEE
Journal:
Proceedings of the 2020 IEEE Intelligent Vehicles Symposium (IV2020) More from this journal
Issue:
2020
Pages:
431-436
Publication date:
2021-01-08
Acceptance date:
2020-04-01
Event title:
IEEE Intelligent Vehicles Symposium (IV)
Event location:
Las Vegas, Nevada, United States
Event website:
https://2020.ieee-iv.org/
Event start date:
2020-10-19
Event end date:
2020-11-13
DOI:
EISSN:
2642-7214
ISSN:
1931-0587
EISBN:
978-1-7281-6673-5
ISBN:
978-1-7281-6674-2


Language:
English
Keywords:
Pubs id:
1098455
Local pid:
pubs:1098455
Deposit date:
2020-04-03

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