| 加权窗口在数字图像相关技术中的应用研究 |
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| 引用本文： | 汪敏,岑豫皖,胡小方,谢能刚,徐德义.加权窗口在数字图像相关技术中的应用研究[J].光子学报,2008,37(12):2568-2571. |
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| 作者姓名： | 汪敏 岑豫皖 胡小方 谢能刚 徐德义 |
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| 作者单位： | 1. 安徽工业大学,机械工程学院,安徽,马鞍山,243002
2. 中国科学技术大学,中国科学院材料力学行为和设计重点实验室,合肥,230026 |
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| 基金项目： | 国家自然科学基金
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北京同步辐射实验室基金
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| 摘 要： | 应用数字图像相关法计算变形前后图像中各点的位移量时,先通过整像素搜索法来确定各点的整像素位移,进而根据整像素搜索得到的相关系数值来计算各点的亚像素位移.提出了一种新的整像素搜索法,即采用计算窗口加权的方法对变形前后图像中的点进行搜索计算.计算结果表明,该方法是可行的,同时可以提高计算结果准确度.
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| 关 键 词： | 数字图像相关 计算窗口 加权因子 |
| 收稿时间： | 2007-07-10 |
| 修稿时间： | 2007-09-13 |
Weighted Window in Digital Image Correlation Method |
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| WANG Min,CEN Yu-wan,HU Xiao-fang,XIE Neng-gang,XU De-yi.Weighted Window in Digital Image Correlation Method[J].Acta Photonica Sinica,2008,37(12):2568-2571. |
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| Authors: | WANG Min CEN Yu-wan HU Xiao-fang XIE Neng-gang XU De-yi |
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| Institution: | WANG Min1,CEN Yu-wan1,HU Xiao-fang2,XIE Neng-gang1,XU De-yi1 (1 School of Mechanical Engineering,Anhui University of Technology,Maanshan,Anhui 243002,China) (2 Chinese Academy Sciences Key Laboratory of Mechanical Behavior , Design of Materials,University of Science , Technology of China,Hefei 230026,China) |
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| Abstract: | In the digital image correlation method,the first step to obtain the displacements of each point in the images taken before and after deformation was to confirm its integer pixel displacement,then to compute its sub-pixel displacement using the correlation coefficient of the integer pixel.A new computing method about the integer pixel was developed,which was by using weighted window to compute the integer pixel displacement of each point.The numerical simulation results show that it can improve the displacement accuracy. |
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| Keywords: | Digital image correlation Computing window Weighted factor |
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