Main > Chinese Journal of Lasers >  Volume 47 >  Issue 1 >  Page 0114001 > Article
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  • Received: Jul. 4, 2019

    Accepted: Oct. 9, 2019

    Posted: Jan. 1, 2020

    Published Online: Jan. 9, 2020

    The Author Email: Li Lijuan (custjuan@126.com)

    DOI: 10.3788/CJL202047.0114001

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    Jiyang Zhang, Jiaojiao Ren, Sihong Chen, Lijuan Li, Changshuang Zhao. Application of Wavelet Denoising in Terahertz Nondestructive Detection[J]. Chinese Journal of Lasers, 2020, 47(1): 0114001

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  • Table 1. Evaluation results of nondestructive detection images of different prefabricated defects in phenolic plastic samples

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    Table 1. Evaluation results of nondestructive detection images of different prefabricated defects in phenolic plastic samples

    Phenolic plastic sampleSubjective evaluationObjective evaluation
    Identify number of defectsDefect recognition rate /%Weber contrast
    Before pretreatment4660.292
    Soft threshold, 3 layers5830.321
    Hard threshold, 5 layers61000.388
    Soft threshold, 5 layers61000.415