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• W3100687815 abstract "Loop closure detection is an essential and challenging problem in simultaneous localization and mapping (SLAM). It is often tackled with light detection and ranging (LiDAR) sensor due to its view-point and illumination invariant properties. Existing works on 3D loop closure detection often leverage on matching of local or global geometrical-only descriptors which discard intensity reading. In this paper we explore the intensity property from LiDAR scan and show that it can be effective for place recognition. We propose a novel global descriptor, intensity scan context (ISC), that explores both geometry and intensity characteristics. To improve the efficiency for loop closure detection, an efficient two-stage hierarchical re-identification process is proposed, including binary-operation based fast geometric relation retrieval and intensity structure re-identification. Thorough experiments including both local experiment and public datasets test have been conducted to evaluate the performance of the proposed method. Our method achieves better recall rate and recall precision than existing geometric-only methods." @default.
• W3100687815 created "2020-11-23" @default.
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• W3100687815 date "2020-05-01" @default.
• W3100687815 modified "2023-10-09" @default.
• W3100687815 title "Intensity Scan Context: Coding Intensity and Geometry Relations for Loop Closure Detection" @default.
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• W3100687815 doi "https://doi.org/10.1109/icra40945.2020.9196764" @default.
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