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Proceedings Paper

Three-dimensional deformation measurement by holographic interferometry with phase-shifting technology
Author(s): Wei Shen; Sei-Han Liao; Ming-Wen Chang
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Paper Abstract

Three dimensional deformation measurement by holographic interferometry with phase shifting technology is presented. The two-reference-beam holography is applied with phase shift to improve the accuracy in optical phase difference measurement. A least squares algorithm is proposed to substitute the Stetson's algorithm in the calculation of the unknown constant phases in these interferograms. Comparisons of the deformations solved by these two algorithms for the same measured optical phase differences are shown. The results show that the local error in phase measurement has less effect on the final deformation solved by the new algorithm than by the Stetson's algorithm.

Paper Details

Date Published: 23 June 1995
PDF: 10 pages
Proc. SPIE 2545, Interferometry VII: Applications, (23 June 1995); doi: 10.1117/12.212630
Show Author Affiliations
Wei Shen, National Central Univ. (Taiwan)
Sei-Han Liao, National Central Univ. (Taiwan)
Ming-Wen Chang, National Central Univ. (Taiwan)


Published in SPIE Proceedings Vol. 2545:
Interferometry VII: Applications
Ryszard J. Pryputniewicz; Gordon M. Brown; Werner P. O. Jueptner, Editor(s)

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