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Surface Defects Identification Method for Reconstituted Tobacco Based on Lightweight Object Detection Model
Received:January 20, 2026  Revised:February 06, 2026
DOI:10.11980/j.issn.0254-508X.2026.05.023
Key Words:reconstituted tobacco  defect detection  deep learning  dual-attention mechanism  lightweight model
Fund Project:湖北省自然科学基金面上项目(2023AFB878);湖北省自然科学基金青年项目(2024AFB259)。
Author NameAffiliationPostcode
WANG Shuiming* 1China Tobacco Hubei Industrial Co., Ltd., Wuhan, Hubei Province, 430040
2Hubei Xinye Reconstituted Tobacco Development Co., Ltd., Wuhan, Hubei Province, 430056 
430056
LI Pengfei* 1China Tobacco Hubei Industrial Co., Ltd., Wuhan, Hubei Province, 430040
2Hubei Xinye Reconstituted Tobacco Development Co., Ltd., Wuhan, Hubei Province, 430056 
430056
LIN Jie 1China Tobacco Hubei Industrial Co., Ltd., Wuhan, Hubei Province, 430040
2Hubei Xinye Reconstituted Tobacco Development Co., Ltd., Wuhan, Hubei Province, 430056 
430056
LI Yichen 1China Tobacco Hubei Industrial Co., Ltd., Wuhan, Hubei Province, 430040
2Hubei Xinye Reconstituted Tobacco Development Co., Ltd., Wuhan, Hubei Province, 430056 
430056
TANG Tianming 1China Tobacco Hubei Industrial Co., Ltd., Wuhan, Hubei Province, 430040
2Hubei Xinye Reconstituted Tobacco Development Co., Ltd., Wuhan, Hubei Province, 430056 
430056
CHEN Qianjin 1China Tobacco Hubei Industrial Co., Ltd., Wuhan, Hubei Province, 430040
2Hubei Xinye Reconstituted Tobacco Development Co., Ltd., Wuhan, Hubei Province, 430056 
430056
WANG Han 3School of Mechanical Engineering and Automation, Wuhan Textile University, Wuhan, Hubei Province, 430200 430200
WEI Ningfeng 3School of Mechanical Engineering and Automation, Wuhan Textile University, Wuhan, Hubei Province, 430200 430200
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Abstract:To address the issues of low efficiency, high false detection, and difficult localization in manual inspection of surface defects in paper-making reconstituted tobacco, this paper proposed an automatic defect recognition method based on a lightweight object detection model. First, a defect detection platform based on dual-line-scan cameras and auxiliary lighting was constructed to capture defect images. Subsequently, batch image preprocessing and data augmentation methods were proposed to expand and optimize the dataset. A combined manual and automatic annotation approach was adopted to perform multi-category labeling according to defect characteristics, obtaining sufficient high-precision training data. Finally, a lightweight object detection model named YOLO-D was developed, incorporating a dual-attention mechanism and a dual-detection-head structure. The results showed that the model achieved a precision of 87.7% with a computational load of only 20.8 GFLOPs. Compared to the YOLOv8 model, precision was improved by 2.2% and computational load was reduced by 26.8%. The proposed method enabled fast and accurate identification of surface defects in reconstituted tobaccos.
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