基于YOLACT的冰体环向裂纹尺寸识别方法  

Method of recognizing ice circumferential crack size based on YOLACT

作　　者：周利 蔡金延 丁仕风 刘仁伟 曾鼎瀚 ZHOU Li;CAI Jinyan;DING Shifeng;LIU Renwei;ZENG Dinghan(School of Naval Architecture,Ocean and Civil Engineering,Shanghai Jiao Tong University,Shanghai 200240,China;School of Naval Architecture and Ocean Engineering,Jiangsu University of Science and Technology,Zhenjiang 212100,China)

机构地区：[1]上海交通大学船舶海洋与建筑工程学院,上海200240 [2]江苏科技大学船舶与海洋工程学院,江苏镇江212100

出　　处：《中国舰船研究》2023年第6期150-157,共8页Chinese Journal of Ship Research

基　　金：国家重点研发计划资助项目(2022YFE010700);国家自然科学基金面上项目资助(52171259)。

摘　　要：[目的]在使用环向裂纹法计算冰载荷时,裂纹的尺寸都是采用经验公式的方法进行估算,在选择经验参数时往往存在很多不确定性,为此提出一种基于YOLACT的环向裂纹参数计算方法,以准确获取海冰裂纹尺寸。[方法]通过YOLACT网络识别随船拍摄图像中的冰块,然后对检测到的掩膜进行边缘检测,得到冰块裂纹形状,对裂纹进行圆弧拟合获取破冰半径和破冰角。[结果]计算结果表明,半径的识别准确率达96.12%,破冰角的识别准确率达96.58%。[结论]该方法可在基于环向裂纹法计算冰载荷时,为环向裂纹法提供裂纹尺寸的精确输入,有助于极地船舶和寒冷地区海洋结构物的初始设计。[Objective]When using the circumference crack method to calculate the ice load,the size of the circumference crack is usually determined by an empirical formula,but this can introduce many uncertainties to the selection of input parameters.[Methods]To accurately determine the size of circumference cracks,we propose a method of recognizing ice circumference crack size based on YOLACT,which can identify ice in images taken with ships.We then detect the edge of the mask and obtain the shape of the ice cracks,and the ice breaking radius and angle can be estimated by fitting the cracks.[Results]The results show that the accuracy of the ice breaking radius and angle estimated by the proposed method can reach up to 96.12%and 96.58%respectively.[Conclusion]This method can accurately determine the size of circumference cracks and assist in the initial design of marine structures in cold regions.

关 键 词：环向裂纹尺寸 实例分割 海冰图像处理 圆弧拟合 

分 类 号：U666.157[交通运输工程—船舶及航道工程]