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Conference Open access

A Multi-class Rice Disease Recognition Method based on Illumination-Robust and Attention-Augmented MobileNetV2

2026 · ITM Web of Conferences · Vol 89, pp. 01001 · 0 citations · 6 references

TL;DR

The rice disease identification method proposed in this paper provides a reference for the deployment and application of the method in different light conditions in the field and achieves test average accuracy of 83.9% and a maximum validation accuracy of 88.0% on the testing sets.

Abstract

Rice is one of the most significant crops in all the world agriculture, diseases and pests of rice seriously threaten grain production. Identifying and classifying them accurately in the field is essential for prevention. However, the existing models often encounter issues such as unequal between lightweight deployment and recognition performance, weak robustness to various lighting conditions and insufficient generalization ability due to class imbalance. To address this issue, the paper proposed a lightweight method for rice diseases' classification based on the optimized MobileNetV2. Its core structure adopted MobileNetV2 as the backbone to retain the advantage of depthwise separable convolution lightweight model and added an SE attention layer after feature extraction stage to enhance the model's focus on lesion regions. Using Test-time- augmentation (TTA) further improves the model's robustness to lighting and shooting angle interference. Based on the experiment results, the proposed model achieves a test average accuracy of 83.9% and a maximum validation accuracy of 88.0% on the testing sets. Under extreme lighting conditions, the performance loss percentage is controlled at 20.78%. The rice disease identification method proposed in this paper provides a reference for the deployment and application of the method in different light conditions in the field.

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