基于数字图像技术在结构物裂缝密度自动分析的研究

土木结构物由于承载及工作环境等因素的作用，造成损伤．裂缝的出现是损伤的最初先兆．因此，工程安全要求对裂缝进行行之有效监测和分析，也是对结构物耐久性评价的基础．裂缝密度是结构物健康检测和耐久性评价一个十分重要的评价指标．利用数码相机对结构物裂缝进行摄影观测，并开发相应的程序对图像进行处理，自动计算出结构造的裂缝密度．研究结果表明，该方法操作方便，节省人力物力，在工程处理中不失为一经济、易行的方法．

Based on Digital Image Technology for Automatic Analysis of the Crack Density of Structures

Civil structures are vulnerable to the effect of some factors like bearing and working conditions etc.Specifically,the emergences of cracks are the initial pre-symptom of the damage.The effectual monitoring and analysis are required to ensure the safety of the structures,which is the base data for the evaluation of the strucctures durability.One of the most vital indexes of the health detection and durability evaluation of structures is the crack density.This paper observes the cracks of structures by using digital cameras,and develops the relevant program to process the pictures,calculating the crack density of structures automatically.The conclusion of this study indicates that this methodology is quite convenient for using,economizing time and manpower,which is an economical and feasible methodology in the engineering treatment.