A weighting window applied to the digital image correlation method

被引：14

作者：

Wang, Min ^{[1
]}

Cen, Yuwan ^{[1
]}

Hu, Xiaofang ^{[2
]}

Yu, Xiaoliu ^{[1
]}

Xie, Nenggang ^{[1
]}

Wu, Yuguo ^{[1
]}

Xu, Peimin ^{[1
]}

Xu, Deyi ^{[1
]}

机构：

[1] Anhui Univ Technol, Sch Mech Engn, Maanshan 243002, Peoples R China

[2] Univ Sci & Technol China, Chinese Acad Sci, Key Lab Mech Behavior & Design Mat, Hefei 230026, Peoples R China

来源：

OPTICS AND LASER TECHNOLOGY | 2009年 / 41卷 / 02期

关键词：

Digital image correlation; Computing window; Weighting factor; FIELD;

D O I：

10.1016/j.optlastec.2008.05.014

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

In the digital image cot-relation method, two steps are used to Calculate the displacements of tested images. The first step is to locate the integer-pixel displacement, and the next one is to compute the subpixel displacement based on the first step. The benefit from the computation method for the integerpixel displacement is that its results directly affect the displacement accuracy of each point in tested images. In this paper, a new method is developed to calculate the displacement fields between two images taken before and after deformation of an object. A new correlation function with a weighting factor related to the position of each point in the image is taken into account. The analysis and experimental results confirm the validity of the new method. in addition, the calculation results from our method have more accuracy than that of the traditional one. Crown Copyright (C) 2008 Published by Elsevier Ltd. All rights reserved.

引用

页码：154 / 158

页数：5

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