Open AccessZernike modal wavefront reconstruction algorithm based on model selection
Author(s) -
Weiping Xie,
Qiong Gao,
Haotong Ma,
Wei Wen-Jian,
Wenjie Jiang
Publication year - 2015
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.64.144201
Subject(s) - zernike polynomials , wavefront , overfitting , algorithm , reconstruction algorithm , computer science , modal , iterative reconstruction , mathematics , optics , artificial intelligence , physics , artificial neural network , polymer chemistry , chemistry
In Zernike modal wavefront reconstruction algorithm, because of a certain number of the low Zernike modes is selected subjective for making up the reconstruction model, the modes confusion and modes coupling will produced, the accuracy reduction of wavefront reconstruction is deduced. According to the minimal description length principal, a principle can balance the model error against model size so as to prevent the model from overfitting. The reconstruction model is selected by top-down method, and Levenberg-Marquardt nonlinear optimization algorithm is applied to the solution of reconstruction coefficients, then the wavefronts reconstruction is realized. Under different noise conditions, the reconstruction algorithm is validated with the numerical simulation of the wavefront reconstruction of uniform amplitude incidence beam, the results indicate: Zernike modal wavefront reconstruction algorithm based on the model selection can improve the wavefront reconstruction accuracy, and algorithm possesses the property of resistance to noise.