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Automatic 3D Plant Organ Instance Segmentation Method Based on PointNeXt and Quickshift plus

文献类型： 外文期刊

作者： Dong, Sifan 1 ; Fan, Xueyan 1 ; Li, Xiuhua 1 ; Liang, Yuming 1 ; Zhang, Muqing 2 ; Yao, Wei 2 ; Yang, Xiping 3 ; Wang, Zeping 4 ;

作者机构： 1.Guangxi Univ, Sch Elect Engn, State Key Lab Conservat & Utilizat Subtrop Agrobio, Nanning 530004, Peoples R China

2.Guangxi Univ, Guangxi Key Lab Sugarcane Biol, Nanning 530004, Peoples R China

3.Guangxi Univ, Coll Agr, State Key Lab Conservat & Utilizat Subtrop Agrobio, Nanning 530004, Peoples R China

4.Guangxi Acad Agr Sci, Sugarcane Res Inst, Nanning 530007, Peoples R China

关键词： Plant phenotyping; Point cloud; Organ segmentation; PointNeXt; Quickshift plus plus

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： 2025 年 7 卷 3 期

页码：

收录情况： SCI

摘要： Organ instance segmentation of 3D plant point clouds is a crucial prerequisite for organ-level phenotype estimation. However, most current cloud segmentation methods are usually designed for specific crop, hardly fit for both monocotyledonous and dicotyledonous crops which have significant structural differences. This study therefore proposed a two-stage method with higher generalization ability for single-plant organ instance segmentation based on PointNeXt and Quickshift++. The effectiveness of this method was tested on different types of crops. The dataset includes point clouds of 122 self-acquired sugarcanes, 49 open-accessed maizes, and 77 open-accessed tomatoes. The improved PointNeXt model was trained to implement the semantic segmentation of stems and leaves. The average mOA and mIoU on the test set reaches 96.96 % and 87.15 %, respectively. The Quickshift++ algorithm was then applied to encode the global spatial structure and local connections of plants for rapid localization and segmentation of leaf instance. Our approach outperformed four SOTA methods, ASIS, JSNet, DFSP, and PSegNet in terms of both quantitative and qualitative segmentation results, achieving average values for mPrec, mRec, mF1, and mIoU of 93.32 %, 85.60 %, 87.94 %, and 81.46 %, respectively. The proposed method also yields excellent results for several other plants in their early stages, indicating its generalization ability and applicability for organ instance segmentation for different plants, thus providing a powerful tool for plant phenotypic research.

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