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• W4367016638 abstract "Vision-based localization is an essential problem for autonomous systems while the performance of vision-based odometry degrades in the challenging scenario. This letter presents S-VIO, an RGB-D visual inertial odometry (VIO) which fully uses multi-sensor measurements (i.e. depth, RGB and IMU), heterogeneous landmarks (i.e. points, lines and planes) and structural regularity of the environment to obtain a robust and accurate localization result. In order to detect the underlying structural regularity of the environment, a two-step Atlanta world inference method is proposed. Leveraging the gravity direction estimated by the VIO system, the proposed algorithm first generates horizontal Atlanta axis hypotheses from a set of recently optimized plane landmarks. Then the following plane landmarks and line clusters are used to filter out the occasionally observed axes based on the persistence of the observation. The remaining axes will survive and be saved in the Atlanta map for future re-observations. Particularly, an efficient mined-and-stabbed (MnS) method is applied to classify the structural line and extract the vanishing point from each line cluster. In addition, a closed-form initialization method for the structural line feature is proposed, which leverages the known direction to obtain a better initial estimation. Integrated with the above novelties, S-VIO is tested on two public real-world RGB-D inertial datasets. Experiments demonstrate that S-VIO has better accuracy and robustness compared to state-of-the-art VIO and RGB-D VIO algorithms." @default.
• W4367016638 created "2023-04-27" @default.
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• W4367016638 date "2023-06-01" @default.
• W4367016638 modified "2023-10-16" @default.
• W4367016638 title "S-VIO: Exploiting Structural Constraints for RGB-D Visual Inertial Odometry" @default.
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• W4367016638 doi "https://doi.org/10.1109/lra.2023.3270033" @default.
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