基于双目立体视觉的波浪参数遥测方法研究

Measurements of wave characteristics based on binocular vision

为了减少测量仪器本身对测量结果的影响并且提高海洋波浪测量仪器的安全性与可维护性,提出了一种将双目立体视觉技术和数字图像处理技术结合起来应用于目标海域海洋波浪参数测量的方法。该方法采用双目立体视觉系统作为采集平台,包含视频获取、视频图像处理、波浪参数反演等主要模块,反演间隔为0.5 s、共2 048帧的波浪变化视频得到目标海域海洋波浪的波高、波周期与波向参数,参数测量精度满足波高量程为0～20 m、测量波高最大误差为10%、周期精确度0.5 s、波向±10°的要求,依据该方法的测量系统可无接触式测量目标海域的波浪参数,系统布放与维护安全方便。

In order to reduce the impact of the instrument itself on the measurement results and improve the safety and maintainability of ocean wave measurement,a method based on binocular stereo vision and digital image processing is used to measure ocean wave parameters.The method used binocular stereo vision system as the acquisition platform,included video acquisition,video image processing,wave parameter calculation and other modules.Wave height,wave period and wave direction can be obtained from 2 048 frames of wave variation video with 0.5 s interval.Wave height range is 0~20 m.The maximum error of wave height is 10%.The period accuracy is 0.5 s.The wave direction accuracy is±10°.The measurement system based on this method can measure the wave parameters without touching,it is safe and convenient to deploy and maintain the system.