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Proceedings Paper

Application of digital holographic interferometry based on EALCD for measurement of displacement
Author(s): Jun Guo; Wanyi Zhang; Hui Dong; Yan Zhou; Wensheng Wang
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Paper Abstract

Real-time test is one of the important parts in digital holographic interferometry researches. In this paper, taking advantage of electrically addressed liquid crystal display(EALCD) features of real-timely writing in and reading out images, the digital holographic interferometry system for real-time measurement of displacement is designed. In order to raise the contrast of the holographic hologram, the image enhancement based on the Laplacian operator has been used to process holograms. Based many advantages of CCD and EALCD, the holographic interferogram with high contrast can be obtained quickly, which can realize the precise measurement of small deformation and displacement of objects. Moreover, the measurement efficiency and precision is raised greatly.

Paper Details

Date Published: 28 December 2010
PDF: 7 pages
Proc. SPIE 7544, Sixth International Symposium on Precision Engineering Measurements and Instrumentation, 75442I (28 December 2010); doi: 10.1117/12.885365
Show Author Affiliations
Jun Guo, Changchun Univ. of Science and Technology (China)
Wanyi Zhang, Changchun Univ. of Science and Technology (China)
Hui Dong, Changchun Univ. of Science and Technology (China)
Yan Zhou, Changchun Univ. of Science and Technology (China)
Wensheng Wang, Changchun Univ. of Science and Technology (China)


Published in SPIE Proceedings Vol. 7544:
Sixth International Symposium on Precision Engineering Measurements and Instrumentation
Jiubin Tan; Xianfang Wen, Editor(s)

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