水利信息化Issue(1):42-46,5.DOI:10.19364/j.1674-9405.2025.01.007
数字孪生倾斜摄影模型轻量化技术的研究与应用
Research and application of lightweight technology for digital twin oblique photogrammetry models
摘要
Abstract
To address the low efficiency of massive oblique photogrammetry models on digital twin platforms,this study proposed a lightweight method for oblique photogrammetry models based on the OBJ format.The method achieved a higher data simplification rate and can adaptively process irregular boundaries of photogrammetry models.The technical workflow included data parsing,texture compression,triangular mesh simplification,and spatial template-based mesh merging.Applied to the oblique photogrammetry model of Qingdao's urban area,the results showed a data reduction rate of approximately 43%and a 3D scene frame rate improvement of about 160%.This approach effectively reduced the number of model tiles and storage requirements while preserving geometric structure accuracy and primary texture features.It also ensured smooth transitions at mesh edges,avoiding significant geometric deformations and texture distortions.The method enhances data loading speed and rendering efficiency on application platforms while lowering hardware requirements.关键词
倾斜摄影模型/轻量化/OBJ格式/二次误差度量/网格合并Key words
oblique photogrammetry model/lightweight/OBJ format/quadric error metric/mesh merging分类
天文与地球科学引用本文复制引用
李震,谭卢师,范伟,王芳,田帅帅..数字孪生倾斜摄影模型轻量化技术的研究与应用[J].水利信息化,2025,(1):42-46,5.基金项目
中国博士后科学基金项目(2021M701373) (2021M701373)
黄河勘测规划设计研究院有限公司自主研发基金项目(2023KY046) (2023KY046)