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• W4312950313 abstract "Simultaneous localization and mapping (SLAM) is used in solving the problems of localization, navigation, and map construction for autonomous vehicles moving in unknown environments. Place recognition is an inevitable subject in SLAM, and the current lidar-based methods have been popularized for their rising environmental robustness. Currently, the place recognition method with lidar has attracted much attention due to its high environmental robustness. However, many 3-D laser point cloud methods for place recognition descriptors construction with the local or global point-cloud data omit some intrinsic properties of the point clouds. In this article, we propose a place recognition method based on the unitary invariance of the Frobenius norm for utilizing different attributes of ground points and non-ground points. Specifically, the interpretable filtering framework and a dynamic threshold adjustment strategy are raised according to different environments and sensors with intensity and geometric information. As commissioning, the comparative experiments are conducted with CHDloop datasets and public KITTI datasets of different scales and access types. Compared to the original scan context (SC) and intensity SC (ISC) methods, our proposed method achieves higher efficiency while maintaining an improved recall rate and precision. This novel method has been integrated into the existing lidar SLAM and formed a new framework FSC_ALOAM that reduces drifts in point-cloud mapping. The entire process improves the accordance of maps at the identical position in auto-driving." @default.
• W4312950313 created "2023-01-05" @default.
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• W4312950313 date "2023-06-01" @default.
• W4312950313 modified "2023-10-11" @default.
• W4312950313 title "High Accuracy and Low Complexity Lidar Place Recognition Using Unitary Invariant Frobenius Norm" @default.
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• W4312950313 doi "https://doi.org/10.1109/jsen.2022.3221979" @default.
• W4312950313 hasPublicationYear "2023" @default.
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