Journal
FRONTIERS IN PLANT SCIENCE
Volume 14, Issue -, Pages -Publisher
FRONTIERS MEDIA SA
DOI: 10.3389/fpls.2023.1276728
Keywords
deep learning; plant disease recognition; convolutional neural network (CNN); transfer learning; lightweight networks
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The rapid development of image processing technology and computing power has led to deep learning becoming one of the main methods for plant disease identification. A novel lightweight convolutional neural network is proposed to address the issues of computational complexity and deployment. Skip connections and optimized feature fusion weight parameters are introduced to achieve higher classification accuracy. The model is pre-trained on plant classification tasks instead of using ImageNet, which enhances performance and robustness. Experimental results show that the proposed model outperforms existing plant disease diagnosis models in terms of accuracy, parameter count, and complexity.
The rapid development of image processing technology and the improvement of computing power in recent years have made deep learning one of the main methods for plant disease identification. Currently, many neural network models have shown better performance in plant disease identification. Typically, the performance improvement of the model needs to be achieved by increasing the depth of the network. However, this also increases the computational complexity, memory requirements, and training time, which will be detrimental to the deployment of the model on mobile devices. To address this problem, a novel lightweight convolutional neural network has been proposed for plant disease detection. Skip connections are introduced into the conventional MobileNetV3 network to enrich the input features of the deep network, and the feature fusion weight parameters in the skip connections are optimized using an improved whale optimization algorithm to achieve higher classification accuracy. In addition, the bias loss substitutes the conventional cross-entropy loss to reduce the interference caused by redundant data during the learning process. The proposed model is pre-trained on the plant classification task dataset instead of using the classical ImageNet for pre-training, which further enhances the performance and robustness of the model. The constructed network achieved high performance with fewer parameters, reaching an accuracy of 99.8% on the PlantVillage dataset. Encouragingly, it also achieved a prediction accuracy of 97.8% on an apple leaf disease dataset with a complex outdoor background. The experimental results show that compared with existing advanced plant disease diagnosis models, the proposed model has fewer parameters, higher recognition accuracy, and lower complexity.
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