Science and Engineering Faculty, Queensland University of Technology (QUT), Brisbane, Queensland, Australia.
Institute of Health and Biomedical Innovation, Queensland University of Technology (QUT), Kelvin Grove, Queensland, Australia.
J Prosthodont. 2020 Dec;29(9):818-825. doi: 10.1111/jopr.13274. Epub 2020 Nov 12.
Three-dimensional (3D) facial scanning is an emerging clinical tool to capture external anatomical features for quantitative assessment and treatment in a wide range of clinical settings.
In this study, an economical approach for rapid scanning of faces in the clinic was developed and validated to record valuable 3D patient data using smartphone cameras and photogrammetry software. Five novice operators were recruited to watch an instructional video developed on the technique before scanning 20 healthy adult participants.
The smartphone-based photogrammetry approach produced scans with 1.3 mm (±0.3 mm) accuracy in comparison to a metrology-rated gold standard device and were 88% (±14%) complete, with no significant difference observed between operators. A moderate to strong intrarater reliability was determined for all novice operators, suggesting that first-use operators can capture consistent scans based on watching an instructional video.
Smartphone photogrammetry could provide a rapid, noninvasive and economical method to capture patient morphological data for clinical assessment and personalized device manufacture. Inexperienced operators can quickly learn and utilize smartphone photogrammetry to provide accurate and reliable facial scans, essential for future clinical translation.
三维（3D）面部扫描是一种新兴的临床工具，可用于捕获广泛临床环境中定量评估和治疗的外部解剖特征。
本研究开发并验证了一种经济的临床面部快速扫描方法，使用智能手机相机和摄影测量软件记录有价值的 3D 患者数据。招募了 5 名新手操作员，在扫描 20 名健康成年参与者之前观看了关于该技术的教学视频。
与经过计量认证的黄金标准设备相比，基于智能手机的摄影测量方法产生的扫描精度为 1.3mm（±0.3mm），并且完成度为 88%（±14%），操作员之间没有观察到显著差异。所有新手操作员的内部分离度均为中度至高度，这表明首次使用该技术的操作员可以根据观看教学视频捕获一致的扫描。
智能手机摄影测量术可为临床评估和个性化设备制造提供快速、无创和经济的方法来捕获患者形态数据。经验不足的操作员可以快速学习并利用智能手机摄影测量术提供准确可靠的面部扫描，这对于未来的临床转化至关重要。
