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A Lightweight Detection Method for Blueberry Fruit Maturity Based on an Improved YOLOv5 Algorithm

Author

Listed:
  • Feng Xiao

    (College of Mechanical and Electrical Engineering, Northeast Forestry University, Harbin 150040, China)

  • Haibin Wang

    (College of Mechanical and Electrical Engineering, Northeast Forestry University, Harbin 150040, China)

  • Yueqin Xu

    (College of Mechanical and Electrical Engineering, Northeast Forestry University, Harbin 150040, China)

  • Zhen Shi

    (College of Mechanical and Electrical Engineering, Northeast Forestry University, Harbin 150040, China)

Abstract

In order to achieve accurate, fast, and robust recognition of blueberry fruit maturity stages for edge devices such as orchard inspection robots, this research proposes a lightweight detection method based on an improved YOLOv5 algorithm. In the improved YOLOv5 algorithm, the ShuffleNet module is used to achieve lightweight deep-convolutional neural networks. The Convolutional Block Attention Module (CBAM) is also used to enhance the feature fusion capability of lightweight deep-convolutional neural networks. The effectiveness of this method is evaluated using the blueberry fruit dataset. The experimental results demonstrate that this method can effectively detect blueberry fruits and recognize their maturity stages in orchard environments. The average recall ( R ) of the detection is 92.0%. The mean average precision (mAP) of the detection at a threshold of 0.5 is 91.5%. The average speed of the detection is 67.1 frames per second (fps). Compared to other detection algorithms, such as YOLOv5, SSD, and Faster R-CNN, this method has a smaller model size, smaller network parameters, lower memory usage, lower computation usage, and faster detection speed while maintaining high detection performance. It is more suitable for migration and deployment on edge devices. This research can serve as a reference for the development of fruit detection systems for intelligent orchard devices.

Suggested Citation

  • Feng Xiao & Haibin Wang & Yueqin Xu & Zhen Shi, 2023. "A Lightweight Detection Method for Blueberry Fruit Maturity Based on an Improved YOLOv5 Algorithm," Agriculture, MDPI, vol. 14(1), pages 1-18, December.
    • Handle: RePEc:gam:jagris:v:14:y:2023:i:1:p:36-:d:1306746
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    References listed on IDEAS

    as
    1. Huawei Yang & Yinzeng Liu & Shaowei Wang & Huixing Qu & Ning Li & Jie Wu & Yinfa Yan & Hongjian Zhang & Jinxing Wang & Jianfeng Qiu, 2023. "Improved Apple Fruit Target Recognition Method Based on YOLOv7 Model," Agriculture, MDPI, vol. 13(7), pages 1-21, June.
    2. Haibin Wang & Xiaomeng Lv & Feng Xiao & Liangliang Sun, 2022. "Analysis and Testing of Rigid–Flexible Coupling Collision Harvesting Processes in Blueberry Plants," Agriculture, MDPI, vol. 12(11), pages 1-30, November.
    3. Gui Yu & Xinglin Zhou, 2023. "An Improved YOLOv5 Crack Detection Method Combined with a Bottleneck Transformer," Mathematics, MDPI, vol. 11(10), pages 1-12, May.
    Full references (including those not matched with items on IDEAS)

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