Title:
NEAR INFRARED SPECTRAL FEATURE EXTRACTION METHOD AND SYSTEM BASED ON FUNCTIONAL PRINCIPAL COMPONENT ANALYSIS
Document Type and Number:
WIPO Patent Application WO/2020/232959
Kind Code:
A1
Abstract:
A near infrared spectral feature extraction method based on functional principal component analysis, and an extraction system thereof. The extraction method comprises steps of: S1, acquiring near infrared spectrum data in multiple samples; S2, preprocessing the near infrared spectrum data using standard normal transformation; S3, obtaining a spline function of the processed near infrared spectrum data; S4, centralizing the spline function; S5, calculating the covariance of the centralized spline function in different waveband functions; S6, calculating the j-th feature value of the covariance; S7, calculating cumulative contribution; and S8, calculating scores of functional principal components in equations of different wavebands.
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| JP3313532 | NEAR INFRARED COMPONENT ANALYZER |
Inventors:
PAN TIANHONG (CN)
LI HAORAN (CN)
CHEN SHAN (CN)
ZOU XIAOBO (CN)
LI HAORAN (CN)
CHEN SHAN (CN)
ZOU XIAOBO (CN)
Application Number:
PCT/CN2019/111602
Publication Date:
November 26, 2020
Filing Date:
October 17, 2019
Export Citation:
Assignee:
UNIV ANHUI (CN)
International Classes:
G01N21/359
Domestic Patent References:
| WO2012142076A1 | 2012-10-18 |
Foreign References:
| CN110006844A | 2019-07-12 | |||
| CN101738373A | 2010-06-16 | |||
| CN105139412A | 2015-12-09 | |||
| CN102519903A | 2012-06-27 | |||
| CN108780730A | 2018-11-09 | |||
| CN101915744A | 2010-12-15 | |||
| CN109409350A | 2019-03-01 |
Other References:
CHEN QUANSHENG; ZHAO JIEWEN EDITED BY CHEN QUANSHENG: "Tea Quality and Safety Detection and Analysis Method", 31 March 2001, CHINA LIGHT INDUSTRY PRESS, CN, ISBN: 978-7-5019-7971-4, article CHEN QUANSHENG; ZHAO JIEWEN EDITED BY CHEN QUANSHENG: "Chapter 3, Near-infrared spectral analysis", pages: 101 - 103, XP009524358
GONG, HUILI: "Feature extraction and similarity measure on tobacco near infrared spectra", CHINA DOCTORAL DISSERTATIONS FULL-TEXT DATABASE, BASIC SCIENCES, no. 02, 15 February 2015 (2015-02-15), pages 1 - 115, XP055754936
LI, YUQIANG ET AL.: "NIR spectral feature selection using lasso method and its application in the classification analysis", SPECTROSCOPY AND SPECTRAL ANALYSIS, vol. 39, no. 12, 31 December 2019 (2019-12-31), pages 3809 - 3815, XP055754956
GONG, HUILI: "Feature extraction and similarity measure on tobacco near infrared spectra", CHINA DOCTORAL DISSERTATIONS FULL-TEXT DATABASE, BASIC SCIENCES, no. 02, 15 February 2015 (2015-02-15), pages 1 - 115, XP055754936
LI, YUQIANG ET AL.: "NIR spectral feature selection using lasso method and its application in the classification analysis", SPECTROSCOPY AND SPECTRAL ANALYSIS, vol. 39, no. 12, 31 December 2019 (2019-12-31), pages 3809 - 3815, XP055754956
Attorney, Agent or Firm:
HEFEI CITY, HAO ZHI YUN PATENTAGENCY (CN)
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