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|Title:||The comparison of different temporal phase analysis algorithms in optical dynamic measurement||Authors:||Miao, Hong
|Keywords:||DRNTU::Science::Physics::Optics and light||Issue Date:||2008||Source:||Miao, H., & Fu, Y. (2008). The comparison of different temporal phase analysis algorithms in optical dynamic measurement. Ninth International Symposium on Laser Metrology, 7155, pp.1-10.||Abstract:||In recent years, optical interferometry has been applied to whole-field, non-contact measurement of vibrating or continuously-deforming objects. In optical dynamic measurement, an interferogram sequence is obtained by a highspeed camera. Retrieving dynamic phase values from this interferogram sequence leads to a precise measurement of different kinematic and deformation parameters of a continuously-deforming or vibrating object. In this paper, this interferogram sequence is classified into two types: (i) intensity variation; and (ii) exponential phase signal. Different temporal phase retrieving techniques, such as Hilbert transform, Fourier transform, windowed Fourier transform and wavelet transform are applied to extract the phase from a simulated signal. The advantage and drawback of each algorithm are discussed. In addition, a new method based on the combination of Fourier transform and windowed Fourier transform is proposed and the simulation shows it can eliminate the noise and evaluate the phase more accurately.||URI:||https://hdl.handle.net/10356/91915
|DOI:||http://dx.doi.org/10.1117/12.814544||Rights:||Copyright 2008 Society of Photo-Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.||Fulltext Permission:||open||Fulltext Availability:||With Fulltext|
|Appears in Collections:||TL Conference Papers|
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