Abstract
Distinguishing waves from obstacles in challenging coastal environments with backlight and low light conditions is crucial for obstacle detection of unmanned surface vehicles (USVs). We propose a dual-view color fusion framework utilizes cooperative dual USVs for obstacle detection. The framework leverages the saliency of the object in dual views relative to the background to determine whether the object is an obstacle. To achieve this, we first perform spatiotemporal calibration of multi-sensors for dual USVs to accurately extract images of the Lidar-detected objects and background in dual-view. Then, we design a feature representation method that fuses dual-view information to capture the saliency of the object in dual-view and the difference in illumination between the dual views. Finally, we train a capped L1-norm twin support vector machine using experimental data to classify the object. Experimental results in two sea areas demonstrate that the proposed framework can enhance obstacle detection performance by effectively distinguishing waves from obstacles, and is generalizable to different types, sizes, and colors of obstacles in various sea areas. Moreover, the proposed framework achieves a high accuracy rate while maintaining a good balance between missed alarms and false alarms, outperforming other methods.
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The datasets used or analyzed during the current study are available from the corresponding author on reasonable request.
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Funding
National Natural Science Foundation of China (42274159); Independent Innovation Technology Special Project of China University of Petroleum (22CX01004A-2); National Key Research and Development Program of China (2017YFC1405203).
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HE: Conceptualization, Methodology, Writing–original draft. DAI: Supervision, Project administration. LI: Investigation, Software, Writing—review and editing. XU: Data curation, JIN: Validation. LIU: Resources.
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He, Z., Dai, Y., Li, L. et al. A coastal obstacle detection framework of dual USVs based on dual-view color fusion. SIViP 17, 3883–3892 (2023). https://doi.org/10.1007/s11760-023-02617-9
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DOI: https://doi.org/10.1007/s11760-023-02617-9