基于数字摄影测量的馆藏文物三维重建方法研究  

Research on 3D reconstruction method of cultural relics in library collection based on digital photogrammetry

作　　者：郭瑞[1] 张磊[1] 徐进[1] 闫东旭 李涛[1] GUO Rui;ZHANG Lei;XU Jin;YAN Dongxu;LI Tao(Institude of Automation,Gansu Academy of Sciences,Lanzhou 730000,China)

机构地区：[1]甘肃省科学院自动化研究所,甘肃兰州730000

出　　处：《甘肃科学学报》2024年第4期99-103,共5页Journal of Gansu Sciences

基　　金：国家自然科学基金项目(62066004);国家档案局科技计划项目(2023-X-060);甘肃省科学院科技计划项目(2021JK-07);甘肃省科学院科技产业化项目(2021CY06)。

摘　　要：为了降低人为操作对文物的损害风险,需开展馆藏文物三维重建方法的研究,以通过数字化技术的应用实现对文物的非接触性记录和数字化保存。目前,现有的三维重建方法存在重建图像的清晰度较低,还原度较差等缺点,因此本文提出了一种基于数字摄影测量的馆藏文物三维重建方法。首先对馆藏文物进行图像采集;然后提取文物的特征点,并通过匹配馆藏文物影像来获取对应关系;再采用不规则离散点构建三角不规则网格(TIN)来建模文物的三维形状;最后,为进一步提高重建效果,进行纹理映射,将高质量的图像纹理信息应用到三维模型上。经过测试和分析,验证了所提出的方法在馆藏文物的三维重建中具有良好的整体效果,分辨率可达到预期的2800像素×2800像素。该方法可为文物修复工作提供可靠的参考依据。In order to reduce the risk of damage to cultural relics caused by human operations,non-contact recording and digital preservation of cultural relics are achieved through the application of digital technology in this paper,and research on 3D reconstruction methods for cultural relics in museum collections is carried out.At present,the existing 3D reconstruction methods have low clarity and poor restoration of the reconstructed images.Therefore,this study proposes a 3D reconstruction method for museum collections based on digital photogrammetry.This method first collects images of cultural relics in the collection,then extracts feature points of the relics,and obtains corresponding relationships by matching the images of cultural relics in the collection.Next,a triangular irregular mesh(TIN)is constructed using irregular discrete points to model the 3D shape of cultural relics.Finally,in order to further improve the reconstruction effect,it conducted texture mapping and applied high-quality image texture information to the 3D model.After testing and analysis,the proposed method has shown good overall results in the 3D reconstruction of cultural relics in the museum collection,with a resolution of up to the expected 2800 pixels×2800 pixels.Therefore,this method can provide a reliable reference basis for cultural relic restoration work.

关 键 词：数字摄影测量 馆藏文物 三维重建 纹理映射 

分 类 号：P23[天文地球—摄影测量与遥感]