Reality Capture照片建模应用和立体摄影面部扫描仪的准确性对比研究

doi:10.13701/j.cnki.kqyxyj.2026.07.011

摘要/Abstract

摘要： 目的: 量化评估Reality Capture(RC)照片建模技术在三维面部重建中的准确性,并探讨性别与年龄因素对精度的影响。方法: 采用横断面设计,纳入148例6~30岁正畸患者,按性别与年龄分为6个亚组。实验组使用单反相机进行环形拍摄并通过RC软件建模;对照组采用RDS Face scan扫描仪获取数据。在Geomagic Wrap软件配准模型,计算全脸及22个分区的均方根误差(root mean square error,RMS),并采用t检验、方差分析等进行比较。结果: RC重建的全脸平均RMS为(1.43±0.38) mm。精度存在区域异质性:颊部及口周区最高(RMS中位数0.5~0.65 mm),下颌角区及耳前区最差(RMS中位数约1.5 mm)。年龄是主要影响因素(P<0.001),成年组RMS[(1.23±0.22) mm]显著低于青春期组与儿童组。性别主效应不显著,但在下颌角区存在显著的性别×年龄交互效应(P<0.01)。结论: RC照片建模技术的总体精度接近临床可接受标准,具备替代或补充专业扫描仪的潜力。其精度受年龄与解剖区域影响显著,临床应用需综合考虑患者年龄及目标评估区域。

关键词: 三维立体摄影测量, 照片建模, 面部软组织分析, 准确性

Abstract: Objective: To quantitatively evaluate the accuracy of Reality Capture (RC) photogrammetry in 3D facial reconstruction and to investigate the influence of sex and age on its precision. Methods: This cross-sectional study enrolled 148 orthodontic patients aged 6-30 years, who were divided into six subgroups based on sex and age. The experimental group utilized a DSLR camera for circular photography and 3D modeling via RC software. The control group obtained data using an RDS Face scanner. Root mean square error (RMS) was calculated for the whole face and 22 subregions via Geomagic Wrap software. Results: The mean whole-face RMS was (1.43±0.38) mm. Buccal and perioral regions showed the highest precision (median RMS 0.5-0.65 mm), while the mandibular angle and preauricular regions had the lowest (median RMS approximately 1.5 mm). Age was a primary influencing factor (P<0.001), adults showed significantly lower error [(1.23±0.22) mm] than adolescents and children (P<0.001). The main effect of sex was not significant, but a significant sex×age interaction effect was observed in the mandibular angle region (P<0.01). Conclusion: RC photogrammetry achieves clinically acceptable accuracy, demonstrating its potential to replace or supplement professional scanners. However, precision is significantly influenced by age and anatomical region, necessitating careful clinical application.

Key words: three-dimensional stereo photogrammetry, photo-based modeling, facial soft tissues analysis, accuracy

唐乙丹, 贾莹. Reality Capture照片建模应用和立体摄影面部扫描仪的准确性对比研究[J]. 口腔医学研究, 2026, 42(7): 612-617.

TANG Yidan, JIA Ying. Comparative Study on Accuracy of Reality Capture Photo-based Modeling and Stereo Photogrammetry Facial Scanners[J]. Journal of Oral Science Research, 2026, 42(7): 612-617.

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