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- W2936995304 abstract "Abstract Fringe-based optical flow is a novel method for measuring the deformation of an object with a high sensitivity. When it is used for out-of-plane displacement measurement, there would be greatly error in low fringe-frequency area. To solve the problem, a new method is proposed, in which an optical vortex beam is used as the object light and a spherical wave as the reference light in double-optical-path interferometry. The interference system and principle are introduced. Some simulations are completed. The results show that there is an unmeasurable area with the circular closed fringe patterns formed by two plane waves. But with the non-closed circular fringe patterns formed by the OV object light and the spherical wave reference light, the measured phase differences are in good agreement with the standard values. And then the measurement errors would be decreased greatly. Besides, the method by using patterns obtained by the interference of an OV light and a spherical wave have a certain degree of anti-noise performance." @default.
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- W2936995304 date "2019-05-01" @default.
- W2936995304 modified "2023-10-11" @default.
- W2936995304 title "Simulation of optical vortex measurement for out-of-plane displacement by using fringe-based optical-flow" @default.
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- W2936995304 doi "https://doi.org/10.1016/j.ijleo.2019.04.042" @default.
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