[1] [1] GUO W Ch, WANG M H, GU J S, et al. Identification of bruised kiwifruits during storage by near infrared spectroscopy and extreme learning machine［J］. Optics and Precision Engineering, 2013, 21(10): 2720-2727 (in Chinese).

[2] [2] ZHENG C Y, GUO Zh H, JIN L. Measurement of total viable count on chilled mutton surface based on hyperspectral imaging technique［J］. Laser Technology, 2015, 39(2): 284-288 (in Chinese).

[3] [3] ZOU X B, SHEN T T, SHI J Y, et al. Discrimination on maturity of plums based on hyperspectral imaging information［J］. Modern Food Science and Technology, 2016, 32(4): 235-240 (in Chinese).

[4] [4] ZHAO F, DONG J L, GUO W Ch. Effect of spectral extraction regions in hyperspectral images on the precision in determining the sugar content of kiwifruits ［J］. Modern Food Science and Technology, 2016, 32(4): 223-228 (in Chinese).

[5] [5] GUO W Ch, ZHAO F, DONG J L. Nondestructive measurement of soluble solids content of kiwifruits using near-infrared hyperspectral imaging［J］. Food Analytical Methods, 2016, 9(1): 38-47.

[6] [6] LI L L, WANG B, ZHANG X H, et al. Discrimination on maturity of plums based on hyperspectral imaging information［J］. Modern Food Science and Technology, 2017, 33(12): 228-232 (in Chinese).

[7] [7] ERKINBAEV C, HENDERSON K, PALIWAL J. Discrimination of gluten-free oats from contaminants using near infrared hyperspectral imaging technique［J］. Food Control, 2017, 80: 97-203.

[8] [8] MO C, KIM G, KIM M S, et al. Fluorescence hyperspectral imaging technique for foreign substance detection on fresh-cut lettuce［J］. Journal of the Science of Food & Agriculture, 2017, 97(12): 3985-3993.

[9] [9] SONG X Sh, CHEN G Q, ZHU Zh W, et al. Determination of vo-lume fraction of acid in Chinese aged liquor by 3-D fluorescence spectrometry［J］. Laser Technology, 2018, 42(4):531-535 (in Chin-ese).

[10] [10] YIN X H, JIANG Y, L B Ch, et al. Quantitative analysis of 2-mercaptobenzothiazole based on terahertz time-domain spectroscopy［J］. Laser Technology, 2019,43(1):1-9 (in Chinese).

[11] [11] PU H B, LIU D, WANG L, et al. Soluble solids content and pH prediction and maturity discrimination of lychee fruits using visible and near infrared hyperspectral imaging［J］. Food Analytical Methods, 2016, 9(1): 235-244.

[12] [12] SIEDLISKA A, BARANOWSKI P, ZUBIK M, et al. Detection of pits in fresh and frozen cherries using a hyperspectral system in transmittance mode［J］. Journal of Food Engineering, 2017, 215: 61-71.

[13] [13] LIU Y D, WU M M, LI Y F, et al. Comparision of reflection and diffuse transmission for detecting solid soluble contents and ratio of sugar and acid in apples by on-line vis/NIR spectroscopy［J］. Spectroscopy and Spectral Analysis, 2017, 37(8): 2424-2429 (in Ch-inese).

[14] [14] LIU Y D, XU H, SUN X D, et al. Non-destructive measurement of tomato maturity by near-infrared diffuse transmission spectroscopy［J］. Laser Technology, 2019,43(1): 25-29 (in Chinese).

[15] [15] ZHAO J, PENG Y K, ZHAO S W, et al. Detection of defects in apples based on hyperspectral imaging technology［J］. Journal of Food Safety and Quality, 2012, 3(6): 681-684 (in Chinese).

[16] [16] TIAN Y W, CHENG Y, WANG X Q, et al. Recognition method of insect damage and stem/calyx on apple based on hyperspectral imaging［J］. Transactions of the Chinese Society of Agricultural Engineering, 2015, 31(4): 325-331 (in Chinese).

[17] [17] ZHANG B F, YUAN L B, ZHANG B X. Study on prediction total acid and soluble sugar of tomato juice by near infrared optical fiber spectrometer technique［J］. Spectroscopy and Spectral Analysis, 2014, 34(2): 350-353 (in Chinese).

[18] [18] NI L J, ZHANG L G. Basic chemometrics and its application［M］. Shanghai: East China University of Science and Technology Press, 2011: 64-69(in Chinese).

[19] [19] LI Y, GUO J X, MUHETAER M, et al. Effect of spectral data pretreatment on visible/near infrared spectroscopy model of soluble so-lids content of apples［J］. Northern Horticulture, 2016, 20: 1-4 (in Chinese).

[20] [20] HUANG W Q, CHEN L P, LI J B, et al. Effective wavelengths determination for detection of slight bruises on apples based on hyperspectral imaging［J］. Transactions of the Chinese Society of Agricultural Engineering, 2013, 29(1): 272-277 (in Chinese).