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- 2017
侧扫声呐图像海底线自动提取方法研究
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Abstract:
针对现有方法在侧扫声呐水柱区图像受发射脉冲、海面回波、尾流及大面积悬浮物等干扰情况下海底线无法自动准确检测和提取，造成斜距改正后目标图像严重畸变和错位等问题，基于侧扫声呐成像机理以及图像特点，提出了海底线最后峰值检测法和基于海底变化渐进性和海底线对称性的海底线修复方法。结合Kalman滤波以及上述方法的特点和适用对象，提出了一种海底线自适应综合检测和提取的方法，并给出了完整的数据处理流程。该方法应用于烟台水域，消除了海况差、悬浮物遮挡等问题的影响，实现了复杂海洋噪声影响下海底线的自动跟踪。与外部测深数据比较，取得了均方根为±0.17 m的跟踪精度
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