Lychee cultivar fine-grained image classification method based on improved ResNet-34 residual network

Published: 17 July 2024
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Lychee, a key economic crop in southern China, has numerous similar-looking varieties. Classifying these can aid farmers in understanding each variety's growth and market demand, enhancing agricultural efficiency. However, existing classification techniques are subjective, complex, and costly. This paper proposes a lychee classification method using an improved ResNet-34 residual network for six common varieties. We enhance the CBAM attention mechanism by replacing the large receptive field in the SAM module with a smaller one. Attention mechanisms are added at key network stages, focusing on crucial image information. Transfer learning is employed to apply ImageNet-trained model weights to this task. Test set evaluations demonstrate that our improved ResNet-34 network surpasses the original, achieving a recognition accuracy of 95.8442%, a 5.58 percentage point improvement.

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How to Cite

Xiao, Y., Wang, J., Xiong, H., Xiao, F., Huang, R., Hong, L., Wu, B., Zhou, J., Long, Y. and Lan, Y. (2024) “Lychee cultivar fine-grained image classification method based on improved ResNet-34 residual network”, Journal of Agricultural Engineering. doi: 10.4081/jae.2024.1593.