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• W3181199966 abstract "Obstacle detection using semantic segmentation has become an established approach in autonomous vehicles. However, existing segmentation methods, primarily developed for ground vehicles, are inadequate in an aquatic environment as they produce many false positive (FP) detections in the presence of water reflections and wakes. We propose a novel deep encoder–decoder architecture, a water segmentation and refinement (WaSR) network, specifically designed for the marine environment to address these issues. A deep encoder based on ResNet101 with atrous convolutions enables the extraction of rich visual features, while a novel decoder gradually fuses them with inertial information from the inertial measurement unit (IMU). The inertial information greatly improves the segmentation accuracy of the water component in the presence of visual ambiguities, such as fog on the horizon. Furthermore, a novel loss function for semantic separation is proposed to enforce the separation of different semantic components to increase the robustness of the segmentation. We investigate different loss variants and observe a significant reduction in FPs and an increase in true positives (TPs). Experimental results show that WaSR outperforms the current state of the art by approximately 4% in F1 score on a challenging unmanned surface vehicle dataset. WaSR shows remarkable generalization capabilities and outperforms the state of the art by over 24% in F1 score on a strict domain generalization experiment." @default.
• W3181199966 created "2021-07-19" @default.
• W3181199966 creator A5001632955 @default.
• W3181199966 creator A5018368394 @default.
• W3181199966 date "2022-12-01" @default.
• W3181199966 modified "2023-09-29" @default.
• W3181199966 title "WaSR—A Water Segmentation and Refinement Maritime Obstacle Detection Network" @default.
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• W3181199966 doi "https://doi.org/10.1109/tcyb.2021.3085856" @default.
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