数字标记点图像相关法在模型实验中的应用  

Application of digital target marker image correlation method in model experiment

作　　者：毛灵涛[1,2] 朱鑫鑫[3] 安里千[2] 蔡光顺[2] 郝耐[2] 

机构地区：[1]煤炭资源与安全开采国家重点实验室,北京100083 [2]中国矿业大学(北京)力学与建筑工程学院,北京100083 [3]煤炭工业合肥设计研究院,安徽合肥230041

出　　处：《辽宁工程技术大学学报（自然科学版）》2013年第10期1367-1373,共7页Journal of Liaoning Technical University (Natural Science)

基　　金：国家重点基础研究发展计划基金资助项目(2010CB732002);中央高校基础研究基金资助项目(2009QM02)

摘　　要：为提高模型位移测量效率,提出数字标记点图像相关法.通过记录不同状态下设有标记点模型的变形图像,采用相关搜索的方法确定标记点在各状态下的位置,进而求得标记点位移.通过实验,将数字标记点图像相关法与经纬仪测量数据进行了比较,平均偏差在5%以内,说明数字标记点图像相关法满足模型实验测量的要求.数字标记点图像相关法中标记点制作简便,在模型变形过程中做平移运动,求解位移时,可以忽略一阶微分项,简化了求解过程.文中给出Matlab编程实现数字标记点图像相关法的相关命令,易于该方法的应用与推广.For improving the measurement efficiency of model displacement, digital target marker image correlation method was proposed. The different displacement phase images of model were recorded, the correlation searching was used to obtain the marker coordinates, and then the displacements of markers were obtained. Comparing the data from digital target marker image correlation method with the ones from the theodolite, the average deviation is less than 5%, which indicates that digital target marker image correlation method can meet the requirements of the model experimental measurement. The target markers are easy to be made and just translated during the model deformation, so the first-order differentials can be neglected while calculating the displacement, which makes the solve processing easier. The main commands are introduced with Matlab programming, which makes digital target marker image correlation method easy to be applied.

关 键 词：数字标记点 图像相关法 位移测量 亚像素 模型实验 MATLAB编程 阀值分割 经纬仪 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]