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Proceedings Paper

Baseline correction method for Raman spectra based on piecewise polynomial fitting
Author(s): H.B. Hu; J. Bai; G. Xia; W.D. Zhang; Y. Ma
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Paper Abstract

Raman spectrum is a scattering spectrum, and its frequency, intensity and polarization can characterize the peculiar properties of materials, thus it has been widely applied in many fields. The Raman signal is so weak that the background interferes it greatly. Polynomial fitting is the simplest method of baseline correction. The order of polynomial is hard to be chosen for the whole data, because if the polynomial order is too high or too low, the accuracy of the baseline fit will be affected. This paper proposes a new approach: piecewise polynomial fitting(PPF). Segment the spectral data, and then the proper order is fitted respectively. Then we employ iterative optimization method eliminate discontinuities between segments. Simulation and experiment results show that this method has a higher accuracy.

Paper Details

Date Published: 7 November 2018
PDF: 6 pages
Proc. SPIE 10832, Fifth Conference on Frontiers in Optical Imaging Technology and Applications, 108321D (7 November 2018); doi: 10.1117/12.2511445
Show Author Affiliations
H.B. Hu, Hefei Univ. of Technology (China)
J. Bai, Hefei Univ. of Technology (China)
G. Xia, Hefei Univ. of Technology (China)
W.D. Zhang, Hefei Univ. of Technology (China)
Y. Ma, Hefei Univ. of Technology (China)

Published in SPIE Proceedings Vol. 10832:
Fifth Conference on Frontiers in Optical Imaging Technology and Applications
Junhao Chu; Wenqing Liu; Huilin Jiang, Editor(s)

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