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An experimental technique to track mooring cables in small scale models using image processing

机译:使用图像处理在小规模模型中跟踪系泊缆的实验技术

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Obtaining information about the motion of mooring cables in small scale models in laboratories can be difficult. To help mend this limitation we present a proof of concept of an experimental technique to track mooring cables. Our technique records underwater videos of cables and then applies image processing to extract the coordinates of the complete medial axis of the cables. Using video acquisition has little interference in the experiments and the processing algorithm performs well even under suboptimal contrast conditions. All the experimental steps are executed underwater, avoiding the need to simplify complex physical models due to visibility or access constraints. Since the whole length of the cable is fully captured on video, any singularity or quick motion (such as those caused by wave energy converters) is adequately detected. Also, the technique yields an acceptable error when compared to directly measured values. With this technique it is possible to acquire important information about the dynamics of mooring cables. (C) 2015 Elsevier Ltd. All rights reserved.
机译:在实验室的小规模模型中获取有关系泊电缆运动的信息可能很困难。为了弥补这一局限性,我们提出了跟踪锚缆的实验技术的概念证明。我们的技术记录电缆的水下视频,然后进行图像处理以提取电缆完整中轴的坐标。使用视频采集在实验中几乎没有干扰,并且即使在次优的对比度条件下,处理算法也能表现良好。所有实验步骤都在水下执行,避免了由于可见性或访问限制而简化复杂物理模型的需要。由于电缆的全长已完全捕获在视频中,因此可以充分检测到任何奇异或快速运动(例如由波能转换器引起的奇异现象或快速运动)。而且,与直接测量的值相比,该技术会产生可接受的误差。利用这种技术,可以获得有关系泊缆索动态的重要信息。 (C)2015 Elsevier Ltd.保留所有权利。

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