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Proceedings Paper

Analyze and research the Moire fringe with information entropy theory
Author(s): Honglei Yu; Xiaorong Jin; Jian Bai; Hao Hu
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Paper Abstract

To improve the accuracy of the measuring system of long focal length, the coordinate of the special spectrum point should be found. In this paper a method based on information entropy is proposed, the feasibility of the method is proved in mathematics, analysis of the moire fringes and the result of the two-dimensional FFT of moire fringes is presented, the process of finding the exactly coordinate of the frequency domain, which is based on the method, is shown. We also demonstrate an application of the method to the measuring system, and numerical result of the experiment could prove that the accurate of the system is significantly improved.

Paper Details

Date Published: 15 October 2012
PDF: 6 pages
Proc. SPIE 8417, 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, 84170O (15 October 2012); doi: 10.1117/12.965545
Show Author Affiliations
Honglei Yu, Zhejiang Univ. (China)
Xiaorong Jin, Zhejiang Univ. (China)
Jian Bai, Zhejiang Univ. (China)
Hao Hu, China Mobie Group Zhejiang Co. Ltd. (China)


Published in SPIE Proceedings Vol. 8417:
6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment
Yudong Zhang; Libin Xiang; Sandy To, Editor(s)

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