骆润玫, 殷惠莉, 刘伟康, 等. 基于YOLOv5-C的广佛手病虫害识别[J]. 华南农业大学学报, 2023, 44(1): 151-160. DOI: 10.7671/j.issn.1001-411X.202203012
    引用本文: 骆润玫, 殷惠莉, 刘伟康, 等. 基于YOLOv5-C的广佛手病虫害识别[J]. 华南农业大学学报, 2023, 44(1): 151-160. DOI: 10.7671/j.issn.1001-411X.202203012
    LUO Runmei, YIN Huili, LIU Weikang, et al. Identification of bergamot pests and diseases using YOLOv5-C algorithm[J]. Journal of South China Agricultural University, 2023, 44(1): 151-160. DOI: 10.7671/j.issn.1001-411X.202203012
    Citation: LUO Runmei, YIN Huili, LIU Weikang, et al. Identification of bergamot pests and diseases using YOLOv5-C algorithm[J]. Journal of South China Agricultural University, 2023, 44(1): 151-160. DOI: 10.7671/j.issn.1001-411X.202203012

    基于YOLOv5-C的广佛手病虫害识别

    Identification of bergamot pests and diseases using YOLOv5-C algorithm

    • 摘要:
      目的  为实现复杂背景下广佛手发病早期的病虫害快速精准识别,提出一种基于YOLOv5-C的广佛手病虫害识别方法。
      方法  使用YOLOv5s网络模型作为基础网络,通过引入所提出的多尺度特征融合模块,提高网络模型的特征提取与特征融合能力,均衡提高每一类广佛手病虫害的识别准确率;使用注意力机制模块提高网络模型对病虫害目标特征信息的关注度,弱化复杂背景的干扰信息,提高网络模型的识别准确率;利用改进的C3-SC模块替换PANet结构中的C3模块,在不影响网络模型识别性能的条件下减少网络模型的参数。
      结果  基于YOLOv5-C的复杂背景下的广佛手病虫害识别,F1分数为90.95%,平均精度均值为93.06%,网络模型大小为14.1 Mb,在GPU上每张图像平均检测时间为0.01 s。与基础网络YOLOv5s相比,平均精度均值提高了2.45个百分点,7个类别识别的平均准确率的标准差由7.14减少为3.13,变异系数由7.88%减少为3.36%。平均精度均值比RetinaNet、SSD、Efficientdet和YOLOv4模型分别高22.30、20.65、4.84和2.36个百分点。
      结论  该方法能快速准确地识别复杂背景下广佛手病虫害目标,可为广佛手种植产业的智能化管理提供参考。

       

      Abstract:
      Objective  In order to achieve rapid and accurate identification of pests and diseases in the early disease stage of bergamot in complex background, we proposes a YOLOv5-C-based method for the identification of bergamot pests and diseases.
      Method  The YOLOv5s network model was used as the base network. The multi-scale feature fusion module was proposed and introduced to improve the feature extraction and feature fusion capability of the network model, and to improve the recognition accuracies of different bergamot pests and diseases in a balanced manner. The attention mechanism module was used to upgrade the attention degree of the network model to the information of target features of pests and diseases, weaken the interference information of complex background, and raise the recognition accuracy of the network model. An improved C3-SC module was used to replace the C3 module in the PANet structure to decrease the number of parameters in the network model without lowering the network model recognition performance.
      Result  F1 score of 90.95% and mean average precision of 93.06% were achieved when identifying the bergamot pests and diseases under a complex background using the YOLOv5-C method. The size of network model was 14.1 Mb, and the average detection time was 0.01 s per image on the GPU. Comparing with the original YOLOv5s, the mean accuracy of YOLOv5-C increased by 2.45 percentage point, the standard deviation of the average precision for seven categories was reduced from 7.14 to 3.13, and the coefficient of variation decreased from 7.88% to 3.36%. Moreover, the mean average accuracy was 22.30, 20.65, 4.84 and 2.36 percentage point higher than those of RetinaNet, SSD, Efficientdet and YOLOv4, respectively.
      Conclusion  The method can quickly and accurately identify bergamot pests and diseases under complex background, and provide a reference for intelligent management of bergamot cultivation industry.

       

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