| 梁变形检测的一维数字图像相关法 |
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| 引用本文： | 袁向荣.梁变形检测的一维数字图像相关法[J].广州大学学报(自然科学版),2010,9(1):54-56. |
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| 作者姓名： | 袁向荣 |
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| 作者单位： | 广州大学土木工程学院,广东,广州,510006 |
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| 基金项目： | 广州市高校科技计划项目(62052)资助 |
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| 摘 要： | 分别选择参考图像和变形图像中跨过指定边缘的线段,对两幅图像的这种线段进行一维相关运算以识别边缘的变形(简称一维DIC法).与面检测的二维DIC法相比,计算量小很多.根据生成图像的研究表明:一维DIC法进行边缘变形识别的误差小于0.05像素.简支梁模型试验表明:边缘变形识别的误差小于0.1像素,700万像素相机检测1.7m长梁的变形精度可达到0.05mm.一维DIC法的主要优点是计算量小,适合于海量数据处理的动态检测,主要缺点是变形前后图像边缘的错位对识别精度的影响不易处理,难以达到二维DIC法和一些高精度边缘检测方法的检测精度.
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| 关 键 词： | 一维数字图像相关 边缘检测 结构变形检测 |
Beam deflection measurement using one dimension digital image correlation |
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| YUAN Xiang-rong.Beam deflection measurement using one dimension digital image correlation[J].Journal og Guangzhou University:Natural Science Edition,2010,9(1):54-56. |
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| Authors: | YUAN Xiang-rong |
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| Institution: | School of Civil Engineering;Guangzhou University;Guangzhou 510006;China |
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| Abstract: | Suppose that a test beam is imaged before and after deformation.These images are denoted as the reference image and the deformed image.Lines or image templates called Zones-Of-Interest (ZOI) are sampled across the designated edges of the images.The deformation of the edge is identified by one-dimensional correlation calculation.The amount of computation of one-dimension DIC method for edge deformation detection is much smaller compared to that of two-dimension DIC method for surface detection.According to t... |
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| Keywords: | one-dimension digital image correlation edge deformation detect structure deformation detect |
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