基于融合注意力机制的苹果品种分类方法
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天津市自然科学基金项目(18JCQNJC70600)和天津市高等学校创新团队培养计划项目(TD13-5034)


Apple Variety Classification Method Based on Fusion Attention Mechanism
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    摘要:

    不同品种苹果之间往往存在较大的价格差异,为了防止从采购到销售过程中因苹果品种分类不当产生经济损失,提出了一种基于融合注意力机制的自动识别和分类模型EBm-Net(针对苹果类型)。该模型通过融合通道注意力和空间注意力机制充分提取了苹果表面的形状轮廓特征和颜色纹理特征,从而进一步增加苹果类型之间的特征距离。同时,从特征图和类别概率统计图2方面证明了EBm-Net在苹果品种分类方法上的有效性。实验结果表明,EBm-Net网络模型在红富士、乔纳金、秦冠、小国光、金冠、澳洲青苹、嘎啦上的分类准确率分别为96.25%、96.25%、100%、92.50%、98.75%、100%和93.75%,7种苹果类型的总体分类准确率高达96.78%。因此,将视觉图像与深度学习相结合对苹果品种进行分类和识别是可行的,为苹果品种的实时检测提供了一种新的方法。

    Abstract:

    Each apple is unique but can be classified into an “apple type” via features such as color, contour, texture, and other physical characteristics. Many apple growers classify apple types manually, often at great expense due to misclassification errors, low efficiency, inconsistent results, and high labor costs. Therefore, a real-time apple type detection and classification system is needed to prevent these complications, which typically happen in the period between sourcing and sales. To automate apple type classification, EBm-Net, an automatic identification and classification model was proposed based on a dual-branch structure network. The model fully extracted the contour, color, and texture characteristics of an apple’s surface by fusing channel attention and spatial attention mechanisms; this was done to further increase the feature difference between apple types by using a distance metric. The effectiveness of the EBm-Net apple type classification method was validated by analyzing its feature map and category probability statistics map. Experimental results showed that the classification accuracy of the EBm-Net model applied to Red Fuji, Jonagold, Qin Guan, Xiao Guoguang, Golden Crown, Granny Smith, and Gala apples was 96.25%, 96.25%, 100%, 92.50%, 98.75%, 100% and 93.75%, respectively; the overall classification accuracy of the seven apple types was as high as 96.78%. Therefore, it was feasible to use visual images combined with deep learning to classify and recognize apple type, which provided a method for real-time autonomous apple type classification.

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耿磊,黄亚龙,郭永敏.基于融合注意力机制的苹果品种分类方法[J].农业机械学报,2022,53(6):304-310,369. GENG Lei, HUANG Yalong, GUO Yongmin. Apple Variety Classification Method Based on Fusion Attention Mechanism[J]. Transactions of the Chinese Society for Agricultural Machinery,2022,53(6):304-310,369

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  • 收稿日期:2021-07-01
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  • 在线发布日期: 2021-09-15
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