[1]胥海燕李伟严小宇林春峰.基于工程独立坐标的多源实景三维模型融合处理方法研究[J].高速铁路技术,2025,16(06):43-48.[doi:10.12098/j.issn.1674-8247.2025.06.007]
　XU Haiyan,LI Wei,YAN Xiaoyu,et al.On the Fusion Processing Methods of Multi-source Real-scene 3D Model Based on Engineering-independent Coordinate System[J].HIGH SPEED RAILWAY TECHNOLOGY,2025,16(06):43-48.[doi:10.12098/j.issn.1674-8247.2025.06.007]
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基于工程独立坐标的多源实景三维模型融合处理方法研究()

《高速铁路技术》[ISSN:1674-8247/CN:51-1730/U]

卷:
16卷
期数:
2025年06期
页码:
43-48
栏目:
勘察设计
出版日期:
2025-12-30

文章信息/Info

Title:
On the Fusion Processing Methods of Multi-source Real-scene 3D Model Based on Engineering-independent Coordinate System
文章编号:
1674-8247(2025)06-0043-06
作者:
胥海燕李伟严小宇林春峰
(中铁二院工程集团有限责任公司, 成都 610031)
Author(s):
XU Haiyan;  LI Wei;  YAN Xiaoyu;  LIN Chunfeng
(China Railway Eryuan Engineering Group Co., Ltd., Chengdu 610031, China)
关键词:
工程独立坐标系;  实景三维模型;  多源数据融合;  凹包分析;  顶点筛选;  三角网生长
Keywords:
engineering independent coordinate system;  real-scene 3D model;  multi-source data fusion;  concave hull analysis;  vertex filtering;  Triangulated Irregular Network(TIN)growth
分类号:
P231
DOI:
10.12098/j.issn.1674-8247.2025.06.007
文献标志码:
A
摘要:
针对倾斜摄影模型与传统数字高程模型(Digital Elevation Models, DEM)/数字正射影像(Digital Orthophoto Maps, DOM)在工程独立坐标系下的融合瓶颈,本文提出一种基于层级瓦片格网的多源实景三维模型融合技术方案。具体实施步骤如下:首先基于工程独立坐标范围构建地形瓦片金字塔结构,建立DEM/DOM数据的四叉树瓦片格网并生成三维层级地形; 其次对倾斜摄影数据实施逐顶点坐标转换至工程坐标系; 最后通过凹包分析、顶点筛选及三角网生长算法实现多源数据的几何与纹理融合。结果表明,该方法在保持倾斜模型原始精度的前提下,融合效率较传统方法实现显著提升,有效解决了多源实景三维模型在工程坐标系下的连续三角网构建难题。研究成果已成功应用于铁路工程实景三维应用系统,为铁路数字孪生三维地理场景的构建提供了关键技术支撑。
Abstract:
In response to the challenges of fusing oblique photography models with traditional Digital Elevation Models(DEM)/Digital Orthophoto Maps(DOM)in the engineering independent coordinate system, this paper proposed a multi-source real-scene 3D model fusion method based on hierarchical tile grids. The specific implementation steps are as follows: Firstly, the terrain tile pyramid structure was constructed based on the range of the engineering independent coordinate system. A quadtree tile grid for DEM/DOM data was established, and 3D hierarchical terrain was generated. Secondly, vertex-by-vertex coordinate conversion was applied to oblique photography data to transform it into the engineering coordinate system. Finally, geometric and texture fusion of the multi-source data was achieved through concave hull analysis, vertex filtering, and Triangulated Irregular Network(TIN)growth algorithms.Research results demonstrate that this method significantly improves fusion efficiency compared to traditional approaches while preserving the original accuracy of the oblique models, effectively resolving the challenge of constructing continuous TINs for multi-source real-scene 3D models in engineering coordinate systems. The research findings have been successfully applied to a railway engineering real-scene 3D application system, providing critical technical support for the construction of railway digital twin 3D geographic scenes.

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备注/Memo

备注/Memo:
收稿日期:2025-04-21
作者简介:胥海燕(1984-),男,高级工程师。
更新日期/Last Update: 2025-12-30