Main > Chinese Journal of Lasers >  Volume 46 >  Issue 9 >  Page 0911002 > Article
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  • Received: Apr. 12, 2019

    Accepted: May. 13, 2019

    Posted: Sep. 1, 2019

    Published Online: Sep. 10, 2019

    The Author Email: Kan Ruifeng (rfkan@ciomp.ac.cn)

    DOI: 10.3788/CJL201946.0911002

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    Liangquan Jia, Hengnian Qi, Wenjun Hu, Guangwu Zhao, Ruifeng Kan, Lu Gao, Wen Zheng, Qin Xu. Rapid Nondestructive Grading Detection of Maize Seed Vigor Using TDLAS Technique[J]. Chinese Journal of Lasers, 2019, 46(9): 0911002

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  • Table 1. Signal-to-noise ratios obtained with different noise reduction methods at different scales

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    Table 1. Signal-to-noise ratios obtained with different noise reduction methods at different scales

    Noise reduction methodSNR /dB
    (j=4)(j=5)(j=6)
    Forced noise reduction64.2268.3667.54
    Default threshold denoising59.3159.0158.83
    Given threshold denoising63.3864.3363.91
    Hard threshold denoising57.7358.2757.89
    Soft threshold denoising62.6864.0362.88
  • Table 2. Seed vigor index of sweet maize in different harvests

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    Table 2. Seed vigor index of sweet maize in different harvests

    IndexValue
    30 d40 d50 d
    Vigor index14.0962.1236.89
    Vigor gradeLowHighMedium
  • Table 3. Relationship between respiratory intensity and vigor index of seed

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    Table 3. Relationship between respiratory intensity and vigor index of seed

    ParameterValue
    1 h2 h3 h4 h5 h6 h7 h8 h
    Correlation coefficient0.0040.6780.9940.9630.9540.9530.9450.937
    Degree of correlationUncorrelatedMediumcorrelationSignificantcorrelatedSignificantcorrelatedSignificantcorrelatedSignificantcorrelatedHighlycorrelatedHighlycorrelated