智能城市2026，Vol.12Issue(7)：108-111,4.DOI:10.19301/j.cnki.zncs.2026.07.025
基于Mesh模型的LOD2.2级城市三维模型智能化构建
Intelligent construction of urban 3D model in LOD2.2-level based on Mesh model
蒋竟欣 1卢永华 1罗小飞1
作者信息
- 1. 深圳市城市规划设计研究院股份有限公司,广东 深圳 518000
- 折叠
摘要
Abstract
To address the problems that oblique photography mesh models are difficult to directly extract building footprints and suffer from severe data redundancy,this paper proposes an intelligent method for constructing LOD2.2-level 3D city models.Based on a region-growing algorithm,through adaptive seed point diffusion,intelligent boundary determination,and automatic topology repair,the automated and precise segmentation of building footprints is achieved;from three geometric dimensions—feature points,contour lines,and triangular meshes—systematic lightweight processing of individual building models is carried out using techniques such as curvature-driven decimation,contour regularization,and coplanar mesh simplification.Results show that this method enables the automatic transformation from'real-scene 3D meshes'to'structured individual models',generating streamlined LOD2.2 models that integrate complex roof forms with regular geometric features,effectively addressing the challenges of low-efficiency semantic segmentation and large model data volumes,and providing a reference for intelligent 3D city modeling.关键词
区域生长算法/LOD2.2模型/要素自动化分割Key words
region-growing algorithm/LOD2.2 model/automatic segmentation of elements分类
天文与地球科学引用本文复制引用
蒋竟欣,卢永华,罗小飞..基于Mesh模型的LOD2.2级城市三维模型智能化构建[J].智能城市,2026,12(7):108-111,4.
