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Evaluation of Bags of Binary Words for Place Recognition in Challenging Scenarios

Title
Evaluation of Bags of Binary Words for Place Recognition in Challenging Scenarios
Type
Article in International Conference Proceedings Book
Year
2021
Authors
Gaspar, AR
(Author)
Other
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Nunes, A
(Author)
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Aníbal Castilho Coimbra de Matos
(Author)
FEUP
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Authenticus ID: P-00V-1W2
Abstract (EN): To perform autonomous tasks, robots in real-world environments must be able to navigate in dynamic and unknown spaces. To do so, they must recognize previously seen places to compensate for accumulated positional deviations. This task requires effective identification of recovered landmarks to produce a consistent map, and the use of binary descriptors is increasing, especially because of their compact representation. The visual Bag-of-Words (BoW) algorithm is one of the most commonly used techniques to perform appearance-based loop closure detection quickly and robustly. Therefore, this paper presents a behavioral evaluation of a conventional BoW scheme based on Oriented FAST and Rotated BRIEF (ORB) features for image similarity detection in challenging scenarios. For each scenario, full-indexing vocabularies are created to model the operating environment and evaluate the performance for recognizing previously seen places similar to online approaches. Experiments were conducted on multiple public datasets containing scene changes, perceptual aliasing conditions, or dynamic elements. The Bag of Binary Words technique shows a good balance to deal with such severe conditions at a low computational cost.
Language: English
Type (Professor's evaluation): Scientific
No. of pages: 6
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