Analyze and research the Moire fringe with information entropy theory

Honglei Yu; Xiaorong Jin; Jian Bai; Hao Hu

doi:10.1117/12.965545

15 October 2012 Analyze and research the Moire fringe with information entropy theory

Honglei Yu, Xiaorong Jin, Jian Bai, Hao Hu

Proceedings Volume 8417, 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment; 84170O (2012) https://doi.org/10.1117/12.965545
Event: 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies (AOMATT 2012), 2012, Xiamen, China

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.

Citation Download Citation

Honglei Yu, Xiaorong Jin, Jian Bai, and Hao Hu "Analyze and research the Moire fringe with information entropy theory", Proc. SPIE 8417, 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, 84170O (15 October 2012); https://doi.org/10.1117/12.965545

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KEYWORDS

Moire patterns

Analytical research

Fringe analysis

Information theory

Image information entropy

Image processing

Mathematics

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