复杂异形古建下基于SfM的视频帧影像三维重构方法  

SfM-based video frame images under complex shaped ancient buildings three-dimensional reconstruction method

作　　者：张茂正 燕宁娜[1] 袁宜红 商立宏 赵振炜 ZHANG Maozheng;YAN Ningna;YUAN Yihong;SHANG Lihong;ZHAO Zhenwei(School of Civil and Hydraulic Engineering,Ningxia University,Yinchuan 750021,China;Ningxia Shitu Construction Engineering Technology Review consulting Co.,Ltd.,Yinchuan 750002,China)

机构地区：[1]宁夏大学土木与水利工程学院,宁夏银川750021 [2]宁夏施图建设工程技术审查咨询有限公司,宁夏银川750002

出　　处：《测绘通报》2023年第10期54-60,共7页Bulletin of Surveying and Mapping

基　　金：国家自然科学基金(51968059)。

摘　　要：针对复杂异形古建筑的实景三维建模问题,本文提出了一种基于运动恢复结构(SfM)的低成本、简单、高效的视频帧影像三维重构方法。首先,选用单镜头消费级无人机,通过设计规划合理的飞行路径,获取高分辨率的视频帧影像,并利用SfM算法生成细节丰富的复杂异形古建筑三维模型。以宁夏银川市兴庆区明代鼓楼为例,从建模效率和建模质量两个方面对3款平台进行量化差异性分析,探求最优平台使用策略。结果表明:该三维重构方式能够高效实现复杂异形古建筑的表面精细纹理获取与实景三维模型重构,其中ContextCapture平台建立模型效果优于PhotoScan、RealityCapture平台,建模质量和纹理清晰度均表现较佳,建议首选使用ContextCapture平台实现三维重构。本文方法可为复杂异形古建保护的三维重构策略提供依据,具有广泛的应用前景。A low-cost,simple and efficient method of 3D reconstruction of video frame images based on structure from motion(SfM) is proposed for the problem of realistic 3D modeling of complex shaped ancient buildings.Firstly,a single-lens consumer-grade UAV is selected to obtain high-resolution video frame images by designing and planning a reasonable flight path,and generate detailed 3D models of complex shaped ancient buildings using SfM algorithms.Taking the Ming dynasty drum tower in Xingqing district,Yinchuan city,Ningxia as an example,we quantify the variability of the three platforms in terms of modeling efficiency and modeling quality,and explore the optimal platform using strategy.The results show that the 3D reconstruction method can efficiently achieve the acquisition of fine texture on the surface of complex heterogeneous ancient buildings and the reconstruction of realistic 3D models,in which the modeling effect of ContextCapture platform is better than PhotoScan and RealityCapture platform,and the modeling quality and texture clarity are better,so it is recommended to use ContextCapture platform for 3D reconstruction.The method in this paper can provide a basis for the 3D reconstruction strategy for the conservation of complex heterogeneous ancient buildings,which has the prospect of wide application.

关 键 词：运动恢复结构 三维重构 古建筑 数字化保护 

分 类 号：P237[天文地球—摄影测量与遥感]