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北京大学学报（医学版） ›› 2023, Vol. 55 ›› Issue (2): 343-350. doi: 10.19723/j.issn.1671-167X.2023.02.021

• 技术方法 • 上一篇    下一篇

5种椅旁三维颜面扫描技术正确度的初步评价

温奥楠1,2,刘微3,柳大为4,朱玉佳2,萧宁2,王勇1,2,*(),赵一姣1,2,*()   

  1. 1. 北京大学医学部医学技术研究院, 北京 100191
    2. 北京大学口腔医学院·口腔医院数字化研究中心, 国家口腔医学中心, 国家口腔疾病临床医学研究中心, 口腔生物材料和数字诊疗装备国家工程研究中心, 口腔数字医学北京市重点实验室, 国家卫生健康委员会口腔医学计算机应用工程技术研究中心, 国家药品监督管理局口腔材料重点实验室, 北京 100081
    3. 银川市口腔医院, 银川 750004
    4. 北京大学口腔医学院·口腔医院正畸科, 北京 100081
  • 收稿日期:2021-07-15 出版日期:2023-04-18 发布日期:2023-04-12
  • 通讯作者: 王勇,赵一姣 E-mail:kqcadc@bjmu.edu.cn;kqcadcs@bjmu.edu.cn

Preliminary evaluation of the trueness of 5 chairside 3D facial scanning techniques

Ao-nan WEN1,2,Wei LIU3,Da-wei LIU4,Yu-jia ZHU2,Ning XIAO2,Yong WANG1,2,*(),Yi-jiao ZHAO1,2,*()   

  1. 1. Institute of Medical Technology, Peking University Health Science Center, Beijing 100191, China
    2. Center of Digital Dentistry, Peking University School and Hospital of Stomatology & National Center for Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Research Center of Oral Biomaterials and Digital Medical Devices & Beijing Key Laboratory of Digital Stomatology & NHC Research Center of Engineering and Technology for Computerized Dentistry & NMPA Key Laboratory for Dental Materials, Beijing 100081, China
    3. Yinchuan Stomatology Hospital, Yinchuan 750004, China
    4. Department of Orthodontics, Peking University School and Hospital of Stomatology, Beijing 100081, China
  • Received:2021-07-15 Online:2023-04-18 Published:2023-04-12
  • Contact: Yong WANG,Yi-jiao ZHAO E-mail:kqcadc@bjmu.edu.cn;kqcadcs@bjmu.edu.cn

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摘要：

目的: 量化评价5种椅旁三维颜面扫描技术的正确度，为口腔临床诊疗应用提供参考。方法: 使用传统专业型三维颜面扫描仪Face Scan采集受试者三维颜面数据，作为本研究的参考数据。分别使用4种便携式三维颜面扫描仪(Space Spider、LEO、EVA和DS-FScan)及iPhone Ⅹ手机(Bellus3D颜面扫描APP)，采集受试者三维颜面数据。在Geomagic Studio 2013中通过数据配准、偏差分析等功能计算上述5种椅旁三维颜面扫描技术的整体三维偏差和面部分区三维偏差，评价其正确度的表现。扫描过程中同时记录扫描时间，并对受试者舒适度采用视觉模拟评分法(visual analogue scale，VAS)进行评分，评价5种三维颜面扫描技术的扫描效率和患者接受度。结果: 测试数据与参考数据间平均整体和平均分区三维偏差最小者均为DS-FScan(分别为0.334 mm和0.329 mm)，最大者均为iPhone Ⅹ手机(分别为0.483 mm和0.497 mm)。Space Spider获取的三维颜面数据的细节特征表现力最好。扫描效率最高和受试者接受度最高者均为iPhone Ⅹ手机，平均扫描时间为14 s，受试者扫描舒适度的VAS评分为9分。结论: 5种椅旁三维颜面扫描技术中，4种便携式设备的扫描数据正确度没有显著差异，均优于iPhone Ⅹ手机的扫描数据，iPhone Ⅹ扫描技术的受试者体验最好。

关键词: 面部, 三维成像, 计算机辅助图像处理

Abstract:

Objective: To quantitatively evaluate the trueness of five chairside three-dimensional facial scanning techniques, and to provide reference for the application of oral clinical diagnosis and treatment. Methods: The three-dimensional facial data of the subjects were collected by the traditional professional three-dimensional facial scanner Face Scan, which was used as the reference data of this study. Four kinds of portable three-dimensional facial scanners (including Space Spider, LEO, EVA and DS-FScan) and iPhone Ⅹ mobile phone (Bellus3D facial scanning APP) were used to collect three-dimensional facial data from the subjects. In Geomagic Studio 2013 software, through data registration, deviation analysis and other functions, the overall three-dimensional deviation and facial partition three-dimensional deviation of the above five chairside three-dimensional facial scanning technologies were calculated, and their trueness performance evaluated. Scanning time was recorded during the scanning process, and the subject's comfort was scored by visual analogue scale(VAS). The scanning efficiency and patient acceptance of the five three-dimensional facial scanning techniques were evaluated. Results: DS-FScan had the smallest mean overall and mean partition three-dimensional deviation between the test data and the reference data, which were 0.334 mm and 0.329 mm, respectively. The iPhone Ⅹ mobile phone had the largest mean overall and mean partition three-dimensional deviation between the test data and the reference data, which were 0.483 mm and 0.497 mm, respectively. The detailed features of the three-dimensional facial data obtained by Space Spider were the best. The iPhone Ⅹ mobile phone had the highest scanning efficiency and the highest acceptance by the subject. The average scanning time of the iPhone Ⅹ mobile phone was 14 s, and the VAS score of the subjects' scanning comfort was 9 points. Conclusion: Among the five chairside three-dimensional face scanning technologies, the trueness of the scan data of the four portable devices had no significant difference, and they were all better than the iPhone Ⅹ mobile phone scan. The subject with the iPhone Ⅹ scanning technology had the best expe-rience.

Key words: Face, Three-dimensional imaging, Computer-assisted image processing

中图分类号: 

  • R780.4

表1

5种椅旁三维颜面扫描仪的相关参数"

Device Weight/kg Nominal precision/mm Light source Scanning principle
Space Spider 0.85 0.05 Blue LED Structured light scanning
LEO 1.80 0.10 Laser Structured light scanning
EVA 0.85 0.10 White light Structured light scanning
DS-FScan 1.13 0.10 White LED Structured light scanning
iPhone Ⅹ 0.18 N/A Infrared light Dot matrix projection

图1

不同三维颜面扫描技术进行三维颜面扫描示意图"

图2

三维颜面数据面部分区示意图"

图3

测试数据与参考数据间的三维偏差色阶图"

表2

椅旁三维颜面扫描数据的平均分区均方根"

Device U_F Zg_R Nasal Zg_L Bu_R O_Ch Bu_L ${\bar x}$±s
Space Spider 0.212 0.316 0.413 0.271 0.302 0.563 0.344 0.346±0.114
LEO 0.249 0.439 0.352 0.314 0.421 0.554 0.401 0.390±0.098
EVA 0.219 0.529 0.336 0.369 0.437 0.322 0.404 0.374±0.098
DS-FScan 0.185 0.365 0.287 0.371 0.316 0.436 0.343 0.329±0.079
iPhone Ⅹ 0.378 0.431 0.617 0.388 0.749 0.521 0.397 0.497±0.141

表3

椅旁三维颜面扫描仪的平均扫描时间及受试者舒适度评价"

Device Average scanning time/s Evaluation of comfort
Space Spider 39 7
LEO 17 8
EVA 53 5
DS-FScan 31 7
iPhone Ⅹ 14 9

图4

5种椅旁三维颜面扫描仪扫描口唇部形态特征的效果比较"

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