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作 者:周伟 苍慜楠[1] 程浩宗 ZHOU Wei;CANG Minnan;CHENG Haozong(School of Art and Design,Xi’an University of Technology,Xi’an Shaanxi 710048,China)
机构地区:[1]西安理工大学艺术与设计学院,陕西西安710048
出 处:《图学学报》2025年第2期369-381,共13页Journal of Graphics
基 金:教育部人文社会科学研究规划基金(23YJA760004);西安理工大学人文社会科学研究专项(106-451623007)。
摘 要:文物表面存在复杂多变的细节,要求数据采集过程需有极高的精度,以确保重建模型的原真性与准确性。然而,传统的方法难以在保持高效率的同时实现高精度,且后续的三维模型构建与纹理映射也极为复杂,需大量的手工调整。为此,提出一种基于AR技术的文物实体数字化三维图像重建方法。首先利用三维扫描与高分辨率相机,采集文物实体的点云数据和图像数据,并利用SIFT算法分别获取2类数据的特征点。依据特征点,利用Revit软件结合SketchUp和Geomagic Studio等工具,构建文物实体三维模型。通过实施虚拟相机三维注册操作,将建立的文物实体三维模型叠加在现实文物图像上,得到叠加后的虚拟文物模型。进一步,将现实文物与叠加后的虚拟文物模型实施虚拟融合,完成文物实体数字化三维图像重建。最终,结合VR技术,对重建的三维数字化图像实施交互式展示。以石峁相关文物数据集进行采集实验,结果表明,该方法能够精准重建文物的数字化三维模型。通过对比实验,该方法在三维重建精度与纹理映射上优于传统方法,减少了人工调整的工作量。有效解决传统数字三维图像重建中存在的精度不足与和操作繁琐等问题,能够高效且准确地完成文物数字化重建,为文物保护、虚拟展示及文化遗产的数字化存档提供了新的技术路径。The surfaces of cultural relics possess complex and variable details,necessitating an exceptionally high level of precision in the data acquisition process to ensure the authenticity and accuracy of the reconstructed models.However,traditional methods often fail to achieve high precision while maintaining efficiency,and the subsequent processes of 3D model construction and texture mapping are highly complex,requiring substantial manual adjustments.To address these challenges,a method based on augmented reality(AR)was proposed for the digital three-dimensional image reconstruction of cultural relics.This method employed 3D scanning and high-resolution cameras to capture point cloud data and image data of the relics.The Scale-Invariant Feature Transform(SIFT)algorithm was utilized to extract feature points from both types of data.Based on these feature points,Revit software,in combination with SketchUp and Geomagic Studio,was used to construct the three-dimensional models of the cultural relics.Through virtual camera registration,the constructed 3D models were overlaid onto images of the actual relics,resulting in augmented virtual models.Subsequently,the real relics and the overlaid virtual models underwent virtual fusion,completing the digital three-dimensional image reconstruction of the cultural relics.Finally,by integrating virtual reality(VR)technology,interactive displays of the reconstructed digital 3D images were implemented.Experiments conducted using the Shimao cultural relics dataset as the experimental subject demonstrated that this method can accurately reconstruct digital 3D models of the relics.Comparative experiments indicated that the proposed method outperformed traditional approaches in both 3D reconstruction accuracy and texture mapping,while reducing the need for manual adjustments.This method effectively addressed the issues of insufficient precision and cumbersome operations inherent in traditional digital 3D image reconstruction,enabling efficient and accurate digital reconstruction of cult
关 键 词:增强现实 三维重建 文物数字化 三维注册 虚实融合
分 类 号:TP391[自动化与计算机技术—计算机应用技术] K87[自动化与计算机技术—计算机科学与技术]
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