桥梁下部结构裂缝提取的改进C-V模型算法(英文)  

Modified C-V model algorithm of crack extraction for bridge substructure

作　　者：李刚[1] 贺拴海[2] 杜凯[1] 刘伟[3] 杜秦文[2] 

机构地区：[1]长安大学电子与控制工程学院,陕西西安710064 [2]长安大学公路学院,陕西西安710064 [3]长安大学汽车学院,陕西西安710064

出　　处：《交通运输工程学报》2012年第4期9-16,共8页Journal of Traffic and Transportation Engineering

基　　金：National Natural Science Foundation of China(60806043);Industrial Application Technology Research and Development Projects of Xi'an Science Technology Bureau(CXY1127);Special Fund for Basic Scientific Research of Central Colleges(CHD2011JC033,CHD2011JC180,CHD2011JC083)

摘　　要：应用改进C-V模型,进行桥梁下部结构裂缝图像分割,通过裂缝截取、图像填充和旋转变换精确提取裂缝宽度。对不同光照条件下拍摄的在役混凝土桥梁结构裂缝图像,分别利用改进C-V模型算法、自适应阈值法、形态学算法、C-V模型以及Canny算法进行试验对比。分析结果表明:改进C-V模型算法误分率和运算时间最小,分别为3.02%与89ms;1 000幅桥梁结构裂缝图像试验对比显示裂缝检测准确率大于90.8%,裂缝宽度平均误差小于0.03mm。可见,改进算法可有效提高检测准确率,减少运算时间。The crack image segmentation of bridge substructure was studied by utilizing a modified C-V model. Crack clip, image filling and rotation transformation were applied for the precise extraction of crack width. The crack images of existing concrete bridge structure were taken in different illuminations, and test results were compared by using modified C-V model algorithm, adaptive threshold algorithm, morphology algorithm, C-V model and Canny algorithm. Analysis result indicates that the miselassification rate of modified C-V model algorithm is 3.02%, the operation time is 89 ms, and the values are minimum compared with other methods. Based on the comparative test on 1 000 crack images of bridge structure, the accuracy rate of crack detection is greater than 90.8%, and the mean error of crack width is less than 0.03 mm. So the modified algorithm can effectively improve detection accuracy rate, and reduce operation time. 2 tabs, 6 figs, 16 refs.

关 键 词：桥梁工程 裂缝提取 图像分割 改进C-V模型算法 图像旋转 

分 类 号：U443.2[建筑科学—桥梁与隧道工程]