Analyze and research the Moire fringe with information entropy theory

被引：0
作者：
Yu, Honglei [1 ]
Jin, Xiaorong [1 ]
Bai, Jian [1 ]
Hu, Hao [2 ]
机构：
[1] Zhejiang Univ, State Key Lab Opt Instrumentat, 304,3rd Teaching Bldg,38 Zheda Rd, Hangzhou 310027, Zhejiang, Peoples R China
[2] China Mobie Grp Zhejiang Co Ltd, Hangzhou, Peoples R China
来源：
6TH INTERNATIONAL SYMPOSIUM ON ADVANCED OPTICAL MANUFACTURING AND TESTING TECHNOLOGIES: OPTICAL TEST AND MEASUREMENT TECHNOLOGY AND EQUIPMENT | 2012年 / 8417卷
关键词：
Moire fringes; information entropy; FFT; frequency domain; AUTOMATED GRID METHODS; PHASE OBJECTS; STRAIN;
D O I：
10.1117/12.965545
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
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.
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收藏
页数：6
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