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• W4205652069 abstract "Water target recognition is a critical challenge for the perception technology of unmanned surface vessels (USVs). In the application of USV, detection accuracy and the inference time both matter, while it is tough to strike a balance and single-frame water target detection behaves unstable in the video detection. To solve these problems, many strategies are applied to increase YOLOv4&#x2019;s performance, including network pruning, the focal loss function, blank label training, and preprocessing with histogram normalization. The optimized detection method achieves a mean average precision (mAP) of 81.74&#x0025; and a prediction speed of 26.77 frames per second (FPS), which meets the USV navigation requirements. To build the integrated USV-based system for water target recognition, a water target dataset containing 9936 images is created from offshore USV experiments in which the human-in-the-loop annotation and mosaic data augmentation methods are used. The issues of miss detection and false alarm can be considerably mitigated by cascading the Siamese-RPN tracking network, and the major color of a water target can be retrieved using a local contrast saliency color detection scheme. The system being tested is called &#x201C;ME120&#x201D; includes an embedded edge computing platform (Nvidia Jetson AGX Xavier). Finally, online dataset learning demonstrates the improved YOLOv4 achieves an increase of 66.98&#x0025; in FPS at the cost of a decrease of 0.79&#x0025; in mAP when compared with the original YOLOv4 and offline navigation experiments validate that our system achieves high recognition capability while maintaining a high degree of robustness." @default.
• W4205652069 created "2022-01-25" @default.
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• W4205652069 date "2022-01-01" @default.
• W4205652069 modified "2023-09-24" @default.
• W4205652069 title "Water Target Recognition Method and Application for Unmanned Surface Vessels" @default.
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• W4205652069 doi "https://doi.org/10.1109/access.2021.3138983" @default.
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