基于数字图像处理的表面裂缝宽度测量
|
摘要
为了避免传统人工裂缝宽度检测方法耗时、耗力、危险、花费高等缺点,提出了一种新的基于数字图像处理技术的表面裂缝宽度测量方法。介绍了该法首先通过编制的程序对采集到的数字图像进行像素标定、灰度转换、阈值分割、中值滤波等步骤后,提取裂缝的图像,进而计算得到裂缝的宽度的过程。同时,利用试验方法对该法进行了误差分析,验证了该法具有相当高的精确性与可行性,可以满足工程实际的需要。
The surface crack width of bridge is a very important index in the security assessment of bridges.Conventional manual crack width detection method is labor-consuming,dangerous and costly.To avoid these shortcomings,a new surface crack width detection method based on digital image process was presented.By using this method,the procedure to process the digital image,including pixel calibration,grayscale convert,threshold segmentation,median filtering by produced program,and then extract the image of the crack and calculate the width,was presented.The error analysis of the method was also performed by test to verify its feasibility and the accuracy,which shows that this method can meet the requirement of engineering practice.
The surface crack width of bridge is a very important index in the security assessment of bridges.Conventional manual crack width detection method is labor-consuming,dangerous and costly.To avoid these shortcomings,a new surface crack width detection method based on digital image process was presented.By using this method,the procedure to process the digital image,including pixel calibration,grayscale convert,threshold segmentation,median filtering by produced program,and then extract the image of the crack and calculate the width,was presented.The error analysis of the method was also performed by test to verify its feasibility and the accuracy,which shows that this method can meet the requirement of engineering practice.
引文
[1]钟铭,王海龙.混凝土结构裂缝问题的研究进展[J].国防交通工程与技术,2003(1):26-32.ZHONG Ming,WANG Hailong.The Research Development ofCracks on Concrete Structures[J].Traffic Engineering andTechnology for National Defence,2003(1):26-32.
[2]孙波成,邱延峻.路面裂缝图像处理算法研究[J].公路交通科技,2008,25(2):64-68.SUN Bocheng,QIU Yanjn.Pavement Crack Diseases Recog-nition Based on Image Processing Algorithm[J].Journal ofHighway and Transportation Research and Development,2008,25(2):64-68.
[3]郭海鸿,李晓星.非接触应变测量的数字散斑相关方法的研究[J].现代制造工程,2007(11):96-98.GUO Haihong,LI Xiaoxing.Research on Digital Speckle Cor-relation Method for Non-contact Strain Measurement[J].Mod-ern Manufacturing Engineering,2007(11):96-98.
[4]杨静.白光散斑的位移测量[J].应用科技,2002,29(9):49-51.YANG Jing.Displacement Measurement Based on Speckles ofWhite Light Diffraction[J].Applied Science and Technology,2002,29(9):49-51.
[5]王言磊,欧进萍.散斑图像相关数字技术在海洋平台结构模型振动位移测量中的应用[J].世界地震工程,2006,22(1):94-98.WANG Yanlei,OU Jinping.Application of a Digital SpeckleImage Correlation Technique to Vibration Displacement Mea-surement of an off Shore Platform Model[J].World Earth-quake Engineering,2006,22(1):94-98.
[6]霍宏涛.数字图像处理[M].北京:北京理工大学出版社,2002.HUO Hongtao.Digital Image Processing[M].Beijing:Bei-jing Institute of Technology Press,2002.
[7]罗军辉,冯平,哈力旦A.MATLAB7.0在图像处理中的运用[M].北京:机械工业出版社,2007.LUO Junhui,FENG Ping,HALITAN A.Application of MAT-LAB7.0 to Digital Image Process[M],Beijing:China Ma-chine Press,2007.
[8]姚海根.彩色图像转灰度图像的技巧[J].印刷杂志,2007(3):47-50.YAO Haigeng.Technology of Turning Color Images into GreyImages[J].Printing Field,2007(3):47-50.
[9]罗晓辉.阈值化图像分割算法研究[J].科技信息,2008(7):185.LUO Xiaohui.Research on Segmentation Algorithm of Thresh-old Images[J].Science and Technology Information,2008(7):185.
[10]PREWITT J M S,MENDELSOHN M L.The Analysis of CellImages[J].Annals of the New York Academy of Sciences,1966,128(3):1035-1053.
[11]杨山.基于中值滤波和小波变换的图像去噪[D].南京:南京理工大学,2002.YANG Shan.Image Denoising Based on Wavelet Transform andMedian Filtering[D].Nanjing:Nanjing University of Sci-ence and Technology,2002.
[12]牛小兵,牛子吉.MATLAB与VC++混合编程技巧[J].现代计算机,2001(1):94-95.NIU Xiaobing,NIU Ziji.The Hybrid Programming Skills of MAT-LAB and VC++[J].Modem Computer,2001(1):94-95.
[2]孙波成,邱延峻.路面裂缝图像处理算法研究[J].公路交通科技,2008,25(2):64-68.SUN Bocheng,QIU Yanjn.Pavement Crack Diseases Recog-nition Based on Image Processing Algorithm[J].Journal ofHighway and Transportation Research and Development,2008,25(2):64-68.
[3]郭海鸿,李晓星.非接触应变测量的数字散斑相关方法的研究[J].现代制造工程,2007(11):96-98.GUO Haihong,LI Xiaoxing.Research on Digital Speckle Cor-relation Method for Non-contact Strain Measurement[J].Mod-ern Manufacturing Engineering,2007(11):96-98.
[4]杨静.白光散斑的位移测量[J].应用科技,2002,29(9):49-51.YANG Jing.Displacement Measurement Based on Speckles ofWhite Light Diffraction[J].Applied Science and Technology,2002,29(9):49-51.
[5]王言磊,欧进萍.散斑图像相关数字技术在海洋平台结构模型振动位移测量中的应用[J].世界地震工程,2006,22(1):94-98.WANG Yanlei,OU Jinping.Application of a Digital SpeckleImage Correlation Technique to Vibration Displacement Mea-surement of an off Shore Platform Model[J].World Earth-quake Engineering,2006,22(1):94-98.
[6]霍宏涛.数字图像处理[M].北京:北京理工大学出版社,2002.HUO Hongtao.Digital Image Processing[M].Beijing:Bei-jing Institute of Technology Press,2002.
[7]罗军辉,冯平,哈力旦A.MATLAB7.0在图像处理中的运用[M].北京:机械工业出版社,2007.LUO Junhui,FENG Ping,HALITAN A.Application of MAT-LAB7.0 to Digital Image Process[M],Beijing:China Ma-chine Press,2007.
[8]姚海根.彩色图像转灰度图像的技巧[J].印刷杂志,2007(3):47-50.YAO Haigeng.Technology of Turning Color Images into GreyImages[J].Printing Field,2007(3):47-50.
[9]罗晓辉.阈值化图像分割算法研究[J].科技信息,2008(7):185.LUO Xiaohui.Research on Segmentation Algorithm of Thresh-old Images[J].Science and Technology Information,2008(7):185.
[10]PREWITT J M S,MENDELSOHN M L.The Analysis of CellImages[J].Annals of the New York Academy of Sciences,1966,128(3):1035-1053.
[11]杨山.基于中值滤波和小波变换的图像去噪[D].南京:南京理工大学,2002.YANG Shan.Image Denoising Based on Wavelet Transform andMedian Filtering[D].Nanjing:Nanjing University of Sci-ence and Technology,2002.
[12]牛小兵,牛子吉.MATLAB与VC++混合编程技巧[J].现代计算机,2001(1):94-95.NIU Xiaobing,NIU Ziji.The Hybrid Programming Skills of MAT-LAB and VC++[J].Modem Computer,2001(1):94-95.
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心