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基于改进残差网络的马铃薯叶片病害识别

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针对计算机识别自然背景下马铃薯叶片病害准确率低的问题,提出一种 C-ResNet-50 模型以改善识别效果.首先,在田间采集马铃薯晚疫病、早疫病、炭疽病和健康叶片图像,并模拟拍摄角度、天气状况等影响因素对图像进行数据增强,从而构建试验数据集.其次,通过对比深度学习模型,选择并改进 ResNet-50 网络:通过向残差块中引入步长为 1的 3×3卷积层和 1×1卷积层以解决残差块主干分支特征信息缺失严重的问题;通过设计新的全连接层以解决马铃薯叶片病害相似度高、分类难度大的问题;通过引入ECA注意力模块以解决主干网络定向关注能力不足的问题.结果表明:C-RseNet-50网络识别马铃薯叶片病害的平均准确率达 90.83%,较原始模型的提升了 1.84个百分点.
Potato leaf disease identification based on improved residual networks
A C-ResNet-50 model was proposed to improve the accuracy of computer recognition of potato leaf diseases in natural backgrounds,in response to the low accuracy of the existing algorithms.Firstly,images of late blight,early blight,anthracnose and healthy leaves for potatoes were collected in the field,and data augmentation was conducted by simulating factors such as shooting angle and weather conditions to construct an experimental dataset.Secondly,by comparing deep learning models,ResNet-50 network was selected and improvements were proposed.A 3×3 convolutional layer and a 1×1 convolutional layer with a step size of 1 were introduced into the residual block to reduce the severe missing feature information in the main branch of the residual block.A new fully connected layer was introduced to conquer the problem of high similarity and difficult classification of potato leaf diseases.The ECA attention module was added to address the issue of the insufficient targeted attention capability in the backbone network.The results showed that the average accuracy of the C-RseNet-50 network for identifying potato leaf diseases reached 90.83%,which was 1.84 percentage points higher than that of the original model.

potato leaf diseaseC-RseNet-50ECA attention moduledisease identificationresidual block

李桂松、黎敬涛、杨艳丽、刘霞

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昆明理工大学信息工程与自动化学院,云南 昆明 650504

云南农业大学植物保护学院,云南 昆明 650201

马铃薯叶片病害 C-RseNet-50 ECA注意力模块 病害识别 残差块

2024

湖南农业大学学报(自然科学版)
湖南农业大学

湖南农业大学学报(自然科学版)

CSTPCD北大核心
影响因子:0.868
ISSN:1007-1032
年,卷(期):2024.50(6)