Bei Liu, Wei-Peng Hu, Xiao Zou, Ya-Jun Ding, Sheng-You Qian. Recognition of denatured biological tissue based on variational mode decomposition and multi-scale permutation entropy[J]. Acta Physica Sinica, 2019, 68(2): 028702-1
- Acta Physica Sinica
- Vol. 68, Issue 2, 028702-1 (2019)
Fig. 1. Time-domain diagram of the simulated signal and its non-noise components: (a) Time-domain diagram of the simulated signal with added noise; (b) time-domain diagram corresponding to non-noise components.仿真信号及其对应非噪声成分的时域图 (a)加入噪声的仿真信号时域图; (b)对应非噪声成分的时域图
Fig. 2. Results of VMD and EMD: (a) VMD method; (b) EMD method.VMD与EMD的结果 (a)VMD方法; (b)EMD方法
Fig. 3. Actual ultrasonic echo signals and their VMD results: (a) Actual ultrasonic echo signals; (b) VMD results of ultrasonic echo signals.实际超声回波信号与VMD结果 (a)实际超声回波信号; (b)超声回波信号VMD结果
Fig. 4. MPE distribution of denatured and undenatured cases with different embedding dimension: (a) m = 3; (b) m = 5; (c) m = 7.
不同嵌入维数时变性与未变性情况的MPE分布 (a) m = 3; (b) m = 5; (c) m = 7
Fig. 5. Clustering effect on ultrasonic scattering echo signals of undenatured and denatured biological tissues through different clustering methods: (a) EMD-MPE-GK; (b) VMD-WE-GK; (c) VMD-MPE-GK.不同聚类方法对未变性与变性生物组织超声散射回波信号的聚类效果 (a) EMD-MPE-GK; (b) VMD-WE-GK; (c) VMD-MPE-GK
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Table 1.
The average entropy of the three samples at each scale when the embedding dimension
三组样本在嵌入维数
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Table 2.
Recognition results of denatured and undenatured tissues.
变性与未变性组织识别结果
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