基于区域生长的侧扫声纳海底线追踪算法  

A side scan sonar bottom tracking algorithm based on region growth

作　　者：李琪[1,2] 张俊明 吴泽坤 戴秀杰 王坤 LI Qi;ZHANG Junming;WU Zekun;DAI Xiujie;WANG Kun(College of Energy and Mining engineering,Shandong University of Science and Technology,Shandong University of Science and Technology,Qingdao 266510,China;Qingdao Earth Software Incorporated,Qingdao 266510,China)

机构地区：[1]山东科技大学能源与矿业工程学院,山东青岛266510 [2]青岛地球软件技术有限公司,山东青岛266510

出　　处：《海洋测绘》2024年第3期24-27,共4页Hydrographic Surveying and Charting

基　　金：国家重点研发计划资助(2022YFC2806603)。

摘　　要：针对当前侧扫声纳海底线自动追踪存在有飞点、连续性较差、易受噪声影响等问题,通过分析侧扫声纳海底线形成机理及图像特征,提出了基于改进的区域生长法的侧扫声纳图像海底线追踪方法,首先利用控制生长方向方法优化区域生长法计算复杂度高、效率低的问题,在提高追踪效率的前提下抗干扰能力也得到了有效加强,然后利用大滤波核中值滤波方法在保留海底边界特征的同时提高海底线连续性,最后利用二次区域生长方法针对性消除航迹线对瀑布图海底线的影响。通过对该方法进行研究和实验,成功实现了海底线自动追踪提取。在秦皇岛附近海域开展现场测试,论证了与传统阈值法提取海底线相比,提出的新方法在抗噪能力、连续性、普适性等方面都具有更好的效果。Aiming at the problems of current automatic tracking of side scan sonar bottom lines,such as flying points,poor continuity,and susceptibility to noise,this paper analyzes the formation mechanism and image characteristics of side scan sonar bottom lines,and proposes a side scan sonar image bottom line tracking method based on an improved region growth method.Firstly,using the control growth direction method to optimize the region growth method,the computational complexity and efficiency of the method are high,On the premise of improving tracking efficiency,the anti-interference ability has also been effectively strengthened.Then,the large filtering kernel median filtering method is used to preserve the characteristics of the seabed boundary while improving the continuity of the seabed line.Finally,the secondary region growth method is used to specifically eliminate the impact of the track line on the waterfall map's bottom line.Through the research and experiment of this method,the automatic tracking and extraction of the sea bottom line was successfully realized.Field tests were carried out in the waters near Qinhuangdao,and it was demonstrated that compared with the traditional threshold method for extracting the sea bottom line,the new method proposed in this paper has better effects in terms of noise immunity,continuity,and universality.

关 键 词：海底地形测量 侧扫声纳图像 海底线追踪 区域生长算法 边缘提取 中值滤波 

分 类 号：P[天文地球]