| 基于梯度法的数字散斑图像相关亚像素搜索算法 |
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| 引用本文： | 王琳霖,唐晨. 基于梯度法的数字散斑图像相关亚像素搜索算法[J]. 光电技术应用, 2011, 26(3): 45-48,52 |
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| 作者姓名： | 王琳霖 唐晨 |
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| 作者单位： | 1. 天津大学理学院应用物理系,天津300072;沈阳航空航天大学工程训练中心,辽宁沈阳110136
2. 天津大学理学院应用物理系,天津,300072 |
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| 摘 要： | 数字散斑图像相关法是对全场位移和应变进行测量的十分有用的无损检测技术.设计精确的亚像素搜索算法是提高测量精度的关键问题.研究了数字散斑图像相关技术的基本原理,在梯度法的基础上,提出了一种基于梯度法的变步长的亚像素搜索算法并应用到相关搜索中,通过对模拟散斑图的位移分析证明了该算法的可靠性和稳定性,并对刚体平移实验进行了测...
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| 关 键 词： | 数字散斑图像相关 梯度法 相关搜索 |
Sub-pixel Searching Algorithm of Digital Image/Speckle Correlation Based on Gradient Method |
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| Wang Lin-lin,Tang Chen. Sub-pixel Searching Algorithm of Digital Image/Speckle Correlation Based on Gradient Method[J]. Electro-Optic Technology Application, 2011, 26(3): 45-48,52 |
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| Authors: | Wang Lin-lin Tang Chen |
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| Affiliation: | Wang Lin-lin,Tang Chen (1.Department of Applied Physics,Science College,Tianjin University,Tianjin 300072,China,2 .Engineering Training Center,Shenyang Aerospace University,Shenyang 110136,China) |
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| Abstract: | The digital image/speckle correlation method(DSCM)is a useful nondestructive testing method in the whole displacements and strains.Designing accurate sub-pixel searching algorithms is an important problem in order to enhance the accuracy of measurement.The principle of the digital image/speckle correlation technique is studied,and a kind of gradient method with changeable step is proposed and applied to the correlation searching.The reliability and stability of this algorithm is proved by the displacement a... |
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| Keywords: | digital image/speckle correlation method gradient method correlation |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
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