一种从点云中自动提取桥梁边线的方法及系统

By employing an automated bridge edge extraction method that utilizes point cloud data for ring neighborhood filtering and iterative retrieval, the high risk and insufficient accuracy of manual measurement in bridge edge detection are resolved. This method achieves efficient and safe bridge edge extraction, making it suitable for various engineering projects.

CN122089772BActive Publication Date: 2026-07-17CHINA RAILWAY NO 2 ENG GROUP CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHINA RAILWAY NO 2 ENG GROUP CO LTD
Filing Date
2026-04-23
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing methods for detecting bridge edge lines suffer from high risks and low efficiency due to manual measurement, as well as insufficient accuracy in manually extracting point cloud edge lines, making it difficult to meet the needs of refined construction.

Method used

This paper presents a method for automatically extracting bridge edges from point clouds. By using circular neighborhood filtering, noise removal, direction calculation and iterative retrieval, and utilizing elevation change detection and angle change detection, the method achieves automated bridge edge extraction.

Benefits of technology

It improves the efficiency and accuracy of bridge edge line extraction, eliminates safety hazards of high-altitude operations, ensures construction safety, provides intuitive and reliable data support, and is highly adaptable to various engineering projects.

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Abstract

本发明涉及工程测量技术领域,具体涉及一种从点云中自动提取桥梁边线的方法及系统。方法步骤包括:获取桥梁及周边三维点云数据集;确定初始边线点,基于环形邻域筛选点云并转换极坐标;通过高程突变检测剔除干扰点;计算初始法向方位角;定位桥梁对侧初始边线点;分别以桥梁两侧初始边线点为种子点,沿预设的桥梁走向迭代检索相邻的边线点;并通过夹角阈值判断检索终止条件,生成完整的桥梁双侧边线。系统包括数据输入、初始设置、方向解算、对侧定位、迭代检测、结果输出模块。本发明解决了传统人工测量安全风险高、效率低以及人工视觉提取点云边线准确度差的问题,实现了复杂环境下桥梁边线的自动化、高精度提取,为施工决策提供直观量化依据。
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