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New Correlation Coefficients Designed for Digital Speckle Correlation Method (DSCM)

机译:专为数字散斑相关方法(DSCM)设计的新相关系数

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摘要

Digital speckle correlation method (DSCM) is based on the correlation-matching search algorithm, in which the correlation coefficient is used as a criterion for matching of two speckle patterns. The properties of the correlation coefficient affect the accuracy and the searching speed of DSCM. As many as ten different definitions of the correlation coefficient can be found in literatures but almost no comparison works are reported. In this paper, the different coefficient equations are compared and the properties of all these definitions are concluded. The comparison results may help to improve the development and application of DSCM in future. Some new correlation coefficients with better properties are then defined on the basis of the comparison.
机译:数字散斑相关方法(DSCM)基于相关匹配搜索算法,其中相关系数用作两个散斑图案匹配的标准。相关系数的性质会影响DSCM的准确性和搜索速度。在文献中可以找到多达十种不同的相关系数定义,但是几乎没有比较报告。在本文中,比较了不同系数方程,并总结了所有这些定义的性质。比较结果可能有助于将来改进DSCM的开发和应用。然后在比较的基础上定义一些具有更好性能的新的相关系数。

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