一种基于多源点云数据的高精度单木分割方法

By using multi-source point cloud data fusion and physical constraint neural network inversion technology, the accuracy and efficiency problems of single tree segmentation and parameter inversion in complex forest environments have been solved, achieving high-precision extraction and identification of single tree parameters, and supporting efficient management of modern forest resource monitoring.

CN121811031BActive Publication Date: 2026-07-17SHANGHAI CHENSHAN BOTANICAL GARDEN +1

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SHANGHAI CHENSHAN BOTANICAL GARDEN
Filing Date
2025-12-15
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing forest tree species identification technologies are insufficient in terms of environmental adaptability, feature fusion ability, anti-interference performance, and biological rationality. They are difficult to achieve high-precision single tree segmentation and parameter inversion, especially in complex forest environments where the identification accuracy and efficiency cannot meet the needs of modern forest monitoring.

Method used

By employing multi-source point cloud data fusion technology, combining data collected by UAV-borne LiDAR and backpack LiDAR, semantic segmentation is performed through the Enhanced Tree Instance Net model, and physical constraint neural network is introduced for parameter inversion, thereby realizing the extraction of individual tree parameters from raw point clouds in accordance with biological laws.

Benefits of technology

It improves point cloud density and data integrity, enhances the accuracy of individual tree segmentation and the biological rationality of parameter inversion, significantly improves processing efficiency and identification accuracy, and meets the needs of modern forest resource monitoring.

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Abstract

本发明涉及一种基于多源点云数据的高精度单木分割方法,该方法通过无人机与背包激光雷达协同采集构建高密度点云数据集,采用多站点ICP配准和CSF滤波进行数据预处理,基于Enhanced Tree Instance Net网络进行语义分割,通过特征贡献度分析与动态场景适配优化分割数据,融合语义与几何特征实现单木实例分割,引入物理约束神经网络实现树高、胸径、冠幅、树龄等多参数协同反演,确保参数符合树木生长规律,通过多层级指标体系进行精度评估与校准,最终实现分割结果与林分参数的可视化表达。本发明显著提升了单木分割精度与生长规律合理性,适用于城市森林碳汇精准计量与智慧林业管理。
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