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- W4378473896 abstract "Place recognition using SOund Navigation and Ranging (SONAR) images is an important task for simultaneous localization and mapping(SLAM) in underwater environments. This paper proposes a robust and efficient imaging SONAR based place recognition, SONAR context, and loop closure method. Unlike previous methods, our approach encodes geometric information based on the characteristics of raw SONAR measurements without prior knowledge or training. We also design a hierarchical searching procedure for fast retrieval of candidate SONAR frames and apply adaptive shifting and padding to achieve robust matching on rotation and translation changes. In addition, we can derive the initial pose through adaptive shifting and apply it to the iterative closest point (ICP) based loop closure factor. We evaluate the performance of SONAR context in the various underwater sequences such as simulated open water, real water tank, and real underwater environments. The proposed approach shows the robustness and improvements of place recognition on various datasets and evaluation metrics. Supplementary materials are available at https://github.com/sparolab/sonar_context.git." @default.
- W4378473896 created "2023-05-27" @default.
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- W4378473896 date "2023-05-24" @default.
- W4378473896 modified "2023-09-27" @default.
- W4378473896 title "Robust Imaging Sonar-based Place Recognition and Localization in Underwater Environments" @default.
- W4378473896 doi "https://doi.org/10.48550/arxiv.2305.14773" @default.
- W4378473896 hasPublicationYear "2023" @default.
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