文献类型： 外文期刊

作者： Wang, Qiang ¹ ; Fan, Xijian ¹ ; Zhuang, Ziqing ¹ ; Tjahjadi, Tardi ² ; Jin, Shichao ³ ; Huan, Honghua ⁴ ; Ye, Qiaolin ¹ ;

作者机构： 1.Nanjing Forestry Univ, Nanjing 210037, Peoples R China

2.Univ Warwick, Coventry CV4 7AL, England

3.Nanjing Agr Univ, Acad Adv Interdisciplinary Studies, Collaborat Innovat Ctr Modern Crop Prod cosponsore, State Key Lab Crop Genet & Germplasm Enhancement,C, Nanjing, Peoples R China

4.Jiangsu Acad Agr Sci, Nanjing 210014, Peoples R China

期刊名称：PLANT PHENOMICS （ 影响因子：6.4； 五年影响因子：7.1 ）

ISSN： 2643-6515

年卷期： 2024 年 6 卷

页码：

收录情况： SCI

摘要： Accurate counting of cereals crops, e.g., maize, rice, sorghum, and wheat, is crucial for estimating grain production and ensuring food security. However, existing methods for counting cereal crops focus predominantly on building models for specific crop head; thus, they lack generalizability to different crop varieties. This paper presents Counting Heads of Cereal Crops Net (CHCNet), which is a unified model designed for counting multiple cereal crop heads by few-shot learning, which effectively reduces labeling costs. Specifically, a refined vision encoder is developed to enhance feature embedding, where a foundation model, namely, the segment anything model (SAM), is employed to emphasize the marked crop heads while mitigating complex background effects. Furthermore, a multiscale feature interaction module is proposed for integrating a similarity metric to facilitate automatic learning of crop-specific features across varying scales, which enhances the ability to describe crop heads of various sizes and shapes. The CHCNet model adopts a 2-stage training procedure. The initial stage focuses on latent feature mining to capture common feature representations of cereal crops. In the subsequent stage, inference is performed without additional training, by extracting domain-specific features of the target crop from selected exemplars to accomplish the counting task. In extensive experiments on 6 diverse crop datasets captured from ground cameras and drones, CHCNet substantially outperformed state-of-the-art counting methods in terms of cross-crop generalization ability, achieving mean absolute errors (MAEs) of 9.96 and 9.38 for maize, 13.94 for sorghum, 7.94 for rice, and 15.62 for mixed crops. A user-friendly interactive demo is available at http://cerealcropnet.com/, where researchers are invited to personally evaluate the proposed CHCNet. The source code for implementing CHCNet is available at https://github.com/Small-flyguy/CHCNet.