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Rice Plaque Detection and Identification Based on an Improved Convolutional Neural Network

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  • Jiapeng Cui

    (College of Engineering, Heilongjiang Bayi Agricultural University, Daqing 163000, China
    College of Electrical and Information, Heilongjiang Bayi Agricultural University, Daqing 163000, China
    Branch of Suihua, Heilongjiang Academy of Agricultural Mechanization Sciences, Suihua 152054, China)

  • Feng Tan

    (College of Electrical and Information, Heilongjiang Bayi Agricultural University, Daqing 163000, China)

Abstract

Rice diseases are extremely harmful to rice growth, and achieving the identification and rapid classification of rice disease spots is an essential means to promote intelligent rice production. However, due to the large variety of rice diseases and the similar appearance of some rice diseases, the existing deep learning methods are less effective at classification and detection. Aiming at such problems, this paper took the spot images of five common rice diseases as the research object and constructed a rice disease data set containing 2500 images of rice bacterial blight, sheath blight, flax leaf spot, leaf streak and rice blast, including 500 images of each disease. An improved lightweight deep learning network model was proposed to realize the accurate identification of disease types and disease spots. A rice disease image classification network was designed based on the RlpNet (rice leaf plaque net) network model, Which is the underlying network, in addition to the YOLOv3 target detection network model in order to achieve the optimization of the feature extraction link, i.e., upsampling by transposed convolution and downsampling by dilated convolution. The improved YOLOv3 model was compared with traditional convolutional neural network models, including the AlexNet, GoogLeNet, VGG-16 and ResNet-34 models, for disease recognition, and the results showed that the average recall, average precision, average F1-score and overall accuracy of the network model for rice disease classification were 91.84%, 92.14%, 91.87% and 91.84%, respectively, which were all improved compared with the traditional algorithms. The improved YOLOv3 network model was compared with FSSD, Faster-RCNN, YOLOv3 and YOLOv4 for spot detection studies, and the results showed that it could achieve a mean average precision (mAP) of 86.72%, a detection rate (DR) of 93.92%, a frames per second (FPS) rate of 63.4 and a false alarm rate (FAR) of only 5.12%. In summary, the comprehensive performance of the proposed model was better than that of the traditional YOLOv3 algorithm, so this study provides a new method for rice disease identification and disease spot detection. It also had good performance in terms of the common detection and classification of multiple rice diseases, which provides some support for the common differentiation of multiple rice diseases and has some practical application value.

Suggested Citation

  • Jiapeng Cui & Feng Tan, 2023. "Rice Plaque Detection and Identification Based on an Improved Convolutional Neural Network," Agriculture, MDPI, vol. 13(1), pages 1-15, January.
    • Handle: RePEc:gam:jagris:v:13:y:2023:i:1:p:170-:d:1030295
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    References listed on IDEAS

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    3. Yan Guo & Jin Zhang & Chengxin Yin & Xiaonan Hu & Yu Zou & Zhipeng Xue & Wei Wang, 2020. "Plant Disease Identification Based on Deep Learning Algorithm in Smart Farming," Discrete Dynamics in Nature and Society, Hindawi, vol. 2020, pages 1-11, August.
    4. Ganesh Bahadur Singh & Rajneesh Rani & Nonita Sharma & Deepti Kakkar, 2021. "Identification of Tomato Leaf Diseases Using Deep Convolutional Neural Networks," International Journal of Agricultural and Environmental Information Systems (IJAEIS), IGI Global, vol. 12(4), pages 1-22, October.
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