基于偏振度特征图的水下裂缝图像分割算法  

Underwater Crack Segmentation Algorithm Based on Polarization Characteristic Map

作　　者：邹杰 宋轲 王张帆 侯一兴 张学武 ZOU Jie;SONG Ke;WANG Zhang-fan;HOU Yi-xing;ZHANG Xue-wu(College of Internet of Things Engineering,Hohai University,Changzhou 213022,China)

机构地区：[1]河海大学物联网工程学院,江苏常州213022

出　　处：《计算机与现代化》2022年第3期64-69,共6页Computer and Modernization

基　　金：国家重点研发计划项目(2018YFC0407101);国家自然科学基金资助项目(61671202)。

摘　　要：由于水体侵蚀、自然老化等问题,水库大坝等水下结构物在长期运行过程中存在表面损伤缺陷,与青苔、贝壳等附着物形成的凹陷,在颜色、纹理等方面具有极高的相似性。当凹陷距离裂缝较近时,极易引起裂缝图像分割误判。为解决该问题,本文引入偏振信息,提出一种基于偏振度特征图的裂缝图像分割算法,以超像素块为单元进行偏振度特征图提取,利用偏振度设定区域生长规则,以种子区域为基础进行区域生长合并,最后根据图像深度图确定裂缝区域。实验结果表明该算法能够有效减少分割误判,裂缝分割结果的特异性和准确度指标均能达到0.9以上,高于现有算法。Due to water erosion,natural aging and other problems,underwater structures such as reservoirs have surface damage defects during long-term operation.The depressions formed by attachments such as moss and shells on the surface of underwater structures are highly similar to cracks in terms of color and texture.When the depressions are close to cracks,it is easy to cause misjudgment in crack image segmentation.In order to solve this problem,the polarization information is introduced in this paper,and a crack image segmentation algorithm based on polarization degree feature map is proposed.The feature map is extracted by superpixel block,the region growth rule is set by polarization degree,and the region growth is combined based on seed region.Finally,the crack region is determined according to the image depth map.The experimental results show that this algorithm can effectively reduce the segmentation misjudgment,and the specificity and accuracy index of crack segmentation results can reach more than 0.9,which is much higher than other algorithms.

关 键 词：偏振图像 SLIC算法 区域生长 裂缝分割 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]