Displacement measurement based on Young's experiment

Zuobin Wang; Peter John Bryanston-Cross; Hongwei Long

doi:10.1117/12.250812

18 September 1996 Displacement measurement based on Young's experiment

Zuobin Wang, Peter John Bryanston-Cross, Hongwei Long

Proceedings Volume 2782, Optical Inspection and Micromeasurements; (1996) https://doi.org/10.1117/12.250812
Event: Lasers, Optics, and Vision for Productivity in Manufacturing I, 1996, Besancon, France

Abstract

This paper presents a method of displacement measurement that is based on Young's experiment. In the method, the displacement is determined according to the fringe spacing equation from Young's experiment. The method is examined in a fiber-optic interferometer system and a subpixel resolution of measurement is achieved from 100 X 152 pixel image patches using fringe pattern matching together with the polynomial curve fitting method. The effect of the number of discrete grey levels of an image on the accuracy of displacement measurement is also discussed. The computer simulation and experiment have shown that it is possible to measure displacement in a machine vision system in some cases using this method.

Citation Download Citation

Zuobin Wang, Peter John Bryanston-Cross, and Hongwei Long "Displacement measurement based on Young's experiment", Proc. SPIE 2782, Optical Inspection and Micromeasurements, (18 September 1996); https://doi.org/10.1117/12.250812

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