Can laser speckle flowmetry be made a quantitative tool?
Can laser speckle flowmetry be made a quantitative tool?
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DOI：
10.1364/josaa.25.002088
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发表时间：
2008-08
期刊：
影响因子：
--
通讯作者：
Kirkpatrick SJ
中科院分区：
文献类型：
--
作者：
Duncan DD;Kirkpatrick SJ
激光散斑流量计的最终目标（以及许多具体实施方式，诸如激光散斑对比度分析，LASCA或LSCA;激光散斑空间对比度分析，LSSCA;激光散斑时间对比度分析，LSTCA;等）是从观察到的散斑对比度推断流速。尽管在过去25年中有许多证明这种定性关系的例子，但没有令人信服的定量关系得到证明。一个原因是一个持续的数学错误，已被大量的工人传播;另一个是一个错误的概念正确的自相关函数有序流。另一个障碍是去相关时间和局部流速之间的特定关系的不确定性。在这里，我们试图消除一些这些错误和误解的意图，把激光散斑流量计成为一个定量的工具。具体来说，我们审查的基本理论，探讨各种分析模型的影响，测量强度波动散射体运动，并解决一些实际问题与测量和随后的数据处理。
The ultimate objective of laser speckle flowmetry (and a host of specific implementations such as laser speckle contrast analysis, LASCA or LSCA; laser speckle spatial contrast analysis, LSSCA; laser speckle temporal contrast analysis, LSTCA; etc.) is to infer flow velocity from the observed speckle contrast. Despite numerous demonstrations over the past 25 years of such a qualitative relationship, no convincing quantitative relationship has been proven. One reason is a persistent mathematical error that has been propagated by a host of workers; another is a misconception about the proper autocorrelation function for ordered flow. Still another hindrance has been uncertainty in the specific relationship between decorrelation time and local flow velocity. Herein we attempt to dispel some of these errors and misconceptions with the intent of turning laser speckle flowmetry into a quantitative tool. Specifically we review the underlying theory, explore the impact of various analytic models for relating measured intensity fluctuations to scatterer motion, and address some of the practical issues associated with the measurement and subsequent data processing.
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影响因子：
1.6
作者：
Bandyopadhyay, R;Gittings, AS;Durian, DJ
通讯作者：
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影响因子：
3.5
作者：
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通讯作者：
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DOI：
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发表时间：
2004-05-01
影响因子：
6.3
作者：
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通讯作者：
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DOI：
10.1364/josaa.3.001032
发表时间：
1986-07-01
影响因子：
1.9
作者：
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通讯作者：
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影响因子：
2.4
作者：
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通讯作者：
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