›› 2019, Vol. 31 ›› Issue (2): 315-325.DOI: 10.3969/j.issn.1004-1524.2019.02.18

• Biosystems Engineering • Previous Articles     Next Articles

A classification method for hyperspectral imaging of Fusarium head blight disease symptom based on deep convolutional neural network

JIN Xiua, LU Jieb, FU Yunzhia, WANG Shuaia, XU Gaojiana, LI Shaowena, *   

  1. a. School of Information and Computer, Anhui Agricultural University, Hefei 230036, China;
    b. College of Agronomy, Anhui Agricultural University, Hefei 230036, China
  • Received:2018-06-14 Online:2019-02-25 Published:2019-03-06

Abstract: In order to realize rapid and early diagnosis of wheat Fusarium head blight disease via hyperspectral imaging, the correlation between the convolutional layer and the spectrum feature of disease symptom was analyzed, and the classification modeling of hyperspectral image was studied. Two typical neural network, Visual Geometry Group (VGG) and residual neural network (ResNet), were introduced to construct the convolutional neural network with different depth. By comparing the training and testing results of the hyperspectral data set for wheat Fusarium head blight disease, it was shown that the loss value decreased with the increased depth of VGG structure, yet the loss value of validation set was not significantly decreased with the increased ResNet depth. According to the evaluation results for testing set, the VGG network of 4 basic units with 22 layers showed the best performance, as its accuracy of training, validation and testing was 0.846, 0843 and 0.742, respectively. Therefore, the VGG network could effectively extract the spectrum feature of Fusarium head blight disease. These results would provide theoretical basis for the intellectual diagnosis of wheat Fusarium head blight disease by the remote sensing in a large scale.

Key words: hyperspectral imaging, deep convolution neural network, Fusarium head blight disease, classification modeling

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