Improving the Recognition of Bamboo Color and Spots Using a Novel YOLO Model.

Abstract

The sheaths of bamboo shoots, characterized by distinct colors and spotting patterns, are key phenotypic markers influencing species classification, market value, and genetic studies. This study introduces YOLOv8-BS, a deep learning model optimized for detecting these traits in Chimonobambusa utilis using a dataset from Jinfo Mountain, China. Enhanced by data augmentation techniques, including translation, flipping, and contrast adjustment, YOLOv8-BS outperformed benchmark models (YOLOv7, YOLOv5, YOLOX, and Faster R-CNN) in color and spot detection. For color detection, it achieved a precision of 85.9%, a recall of 83.4%, an F1-score of 84.6%, and an average precision (AP) of 86.8%. For spot detection, it recorded a precision of 90.1%, a recall of 92.5%, an F1-score of 91.1%, and an AP of 96.1%. These results demonstrate superior accuracy and robustness, enabling precise phenotypic analysis for bamboo germplasm evaluation and genetic diversity studies. YOLOv8-BS supports precision agriculture by providing a scalable tool for sustainable bamboo-based industries. Future improvements could enhance model adaptability for fine-grained varietal differences and real-time applications.

Plant phenotyping relevance

竹の色および斑点という植物形質を画像から検出するYOLOモデルを開発し、複数モデルとの性能比較で検証しており、フェノタイピング手法が中心である。

Code and data availability

The paper's bamboo shoot sheath image dataset (6186 images) and YOLOv8-BS model/code are not publicly deposited; the Data Availability Statement states data are available only on request from the corresponding author. No public URL for the dataset, annotations, or trained model is provided.

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