SHEAR MEASUREMENT IN DIGITAL SPECKLE SHEARING INTERFEROMETRY USING DIGITAL CORRELATION

被引：14
|
作者：
NG, TW
机构：
[1] Department of Mechanical and Production Engineering, National University of Singapore, 10, Kent Ridge Crescent
来源：
OPTICS COMMUNICATIONS | 1995年 / 115卷 / 3-4期
关键词：
D O I：
10.1016/0030-4018(94)00702-V
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Accurate computations of surface slope deformation based on digital speckle shearing interferometry fringe patterns require a precise measure of the amount of shear introduced. A previous method of employing image processing, while providing accurate and fast measurements, is limited by the need to place a tape target on the object surface. In this paper, a novel method employing digital correlation is demonstrated to obviate this requirement while maintaining accurate mensurations of shear. It also allows automated measurement procedures to be readily incorporated.
引用
收藏
页码：241 / 244
页数：4
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