@inproceedings{9233bffa8b3148269d238549a6e28166,
title = "Improved MDCFT-Based Method for Estimating Physical Parameters from Newton's Rings",
abstract = "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.",
keywords = "Chirp signal, Improved MDCFT, Newton{\textquoteright}s rings, Parameter estimation",
author = "Deming Shen and Mingfeng Lu and Jinmin Wu and Ruoqi Xing and Xiaoxin Xiong and Hongtao Wei and Saihui Fan and Feng Zhang and Ran Tao",
note = "Publisher Copyright: {\textcopyright} 2023 SPIE. All rights reserved.; 3rd International Conference on Optics and Image Processing, ICOIP 2023 ; Conference date: 14-04-2023 Through 16-04-2023",
year = "2023",
doi = "10.1117/12.2689228",
language = "English",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
publisher = "SPIE",
editor = "Bingxiang Li and Chao Ren",
booktitle = "Third International Conference on Optics and Image Processing, ICOIP 2023",
address = "United States",
}