重庆理工大学学报2024，Vol.38Issue(21)：164-172,9.DOI:10.3969/j.issn.1674-8425(z).2024.11.020
防止纹理扭曲的倾斜摄影模型轻量化算法
Lightweight algorithm for preventing texture distortion in oblique photogrammetry model simplification
摘要
Abstract
To address the texture distortion after mesh simplification in oblique photogrammetry models,we propose a lightweight algorithm based on the quadratic error metric(QEM)algorithm.It categorizes vertices based on their topological connectivity within the model,and then formulates appropriate folding strategies for different vertex types.It also introduces vertex fluctuation factor,texture deformation factor,and average triangle area within a one-ring neighborhood of each vertex to enhance the edge folding cost in the QEM algorithm.Our experimental results show the improved algorithm effectively avoids texture distortion at high simplification rates,preserving both the geometric and texture features of the model.Meanwhile,it reduces the maximum error,average error,and mean square error of the processed model by at least 43.55％,52.50％and 21.61％respectively compared to those of the QEM algorithm.At a simplification rate of 90％,the algorithm lowers the maximum error,average error,and mean square error of the processed model by 34.90％,10.61％and 12.31％respectively compared to those of simplification algorithm for textured models.关键词
倾斜摄影模型/二次误差度量算法/网格简化/纹理扭曲/模型轻量化Key words
oblique photogrammetry/quadric error metrics/mesh simplification/texture distortion/model lightweight分类
信息技术与安全科学引用本文复制引用
王彦海,张宇昊,李成,陈树平,李恩阳..防止纹理扭曲的倾斜摄影模型轻量化算法[J].重庆理工大学学报,2024,38(21):164-172,9.基金项目
国家自然科学基金项目(U22A20600 （）
52079070) （）
防灾减灾湖北省重点实验室开放基金项目(2022KJZ07) （2022KJZ07）
