HIGH-SPEED AUTOMATIC-MEASUREMENT OF OUT-OF-PLANE DISPLACEMENT USING ESPI

被引：6

作者：

CHAN, KT ^{[1
]}

LEUNG, TP ^{[1
]}

ZHANG, JZ ^{[1
]}

机构：

[1] NANKAI UNIV,TIANJIN,PEOPLES R CHINA

来源：

OPTICS AND LASER TECHNOLOGY | 1993年 / 25卷 / 01期

关键词：

ELECTRONIC SPECKLE PATTERN INTERFEROMETRY; FAST FOURIER TRANSFORMS; IMAGE PROCESSING;

D O I：

10.1016/0030-3992(93)90149-A

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Using fast Fourier transform and PC-based electronic speckle pattern interferometry, the out-of-plane displacement is measured by detecting the peak frequency in the spatial spectrum. An analysis has been made to show that this method can also be applied to non-uniformly spaced fringes when the deformation can be expressed in second-order Taylor series. The accuracy is shown to be good and the measurement and computing time for one point takes 200 ms.

引用

页码：3 / 8

页数：6

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