Improved MDCFT-Based Method for Estimating Physical Parameters from Newton's Rings

Deming Shen, Mingfeng Lu*, Jinmin Wu, Ruoqi Xing, Xiaoxin Xiong, Hongtao Wei, Saihui Fan, Feng Zhang, Ran Tao

*此作品的通讯作者

科研成果: 书/报告/会议事项章节会议稿件同行评审

摘要

Newton's ring pattern is an typical interference fringe often encountered in optical measurements. The physical parameters, such as curvature radius, the ring's center can be estimated by analyzing it. Newton ring formed by spherical interference is two-dimensional Chirp signal, and its chirp parameters are almost impossible to be integers. However, the strict constraints of discrete Chirp Fourier transform (DCFT) and the existing discrete Modified Chirp Fourier transform (MDCFT) can only estimate the integer value part of parameter, which has a large recognition error. An improved MDCFT algorithm is proposed to further estimate the non-integer value part by using the object offset principle, thereby improving the estimation accuracy of Newton ring parameters. Experimental results verify the effectiveness and correctness of the proposed method.

源语言英语
主期刊名Third International Conference on Optics and Image Processing, ICOIP 2023
编辑Bingxiang Li, Chao Ren
出版商SPIE
ISBN(电子版)9781510667426
DOI
出版状态已出版 - 2023
活动3rd International Conference on Optics and Image Processing, ICOIP 2023 - Hangzhou, 中国
期限: 14 4月 202316 4月 2023

出版系列

姓名Proceedings of SPIE - The International Society for Optical Engineering
12747
ISSN(印刷版)0277-786X
ISSN(电子版)1996-756X

会议

会议3rd International Conference on Optics and Image Processing, ICOIP 2023
国家/地区中国
Hangzhou
时期14/04/2316/04/23

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