上海交通大学学报（医学版）

›› 2010, Vol. 30 ›› Issue (1): 66-.

• 论著（基础研究） • 上一篇    下一篇

结构光投影面部三维测量系统的精度研究

熊耀阳1, 陈晓波2, 孙 健1, 张富强1, 习俊通2   

  1. 上海交通大学 1. 医学院第九人民医院口腔医学院口腔修复科上海市口腔医学重点实验室, 上海 200011；2. 机械与动力学院, 上海 200030
  • 出版日期:2010-01-26 发布日期:2010-01-26
  • 通讯作者: 张富强, 电子信箱: fredzc@online.sh.cn。
  • 作者简介:熊耀阳（1977—）, 女, 羌族, 主治医师, 博士；电子信箱: yaoyangx@yahoo.com。
  • 基金资助:

    上海市信息化委员会专项基金（088）；上海市重点学科（特色学科）建设项目 （T0202）

Accuracy of three dimensional facial measurement system based on structured light projection

XIONG Yao-yang1, CHEN Xiao-bo2, SUN Jian1, |ZHANG Fu-qiang1, XI Jun-tong2   

  1. 1. Department of Prosthodontics, College of Stomatology, Shanghai Key Laboratory of Stomatology, The Ninth People's Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai 200011, China；2. School of Mechanical Engineering, Shanghai Jiaotong University, Shanghai 200030, China
  • Online:2010-01-26 Published:2010-01-26
  • Supported by:

    Shanghai Economic and Information Technology Committee Foundation, 088；Shanghai Key Discipline Construction Foundation, T0202

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摘要：

目的 研究自行开发的结构光投影面部三维测量系统的测量精度，探讨减少图像噪声的方法。方法 通过测量已知的标定物对结构光投影面部三维测量系统参数设计值进行修正，实现系统标定，提高测量精度。同时，对图像噪声产生的原因进行分析，消除图像噪声和杂点。结果 通过计算获得系统各部件参数，并对这些参数进行标定，提高了结构光投影面部三维测量系统的测量精度(0.028 mm)。应用图像处理技术减小了输出图像的噪声和杂点。结论 结构光投影面部三维测量系统精度高，输出图像稳定，系统临床使用可靠，可用于人体面部外形采集和重建。

关键词: 精度, 标定, 结构光, 测量系统

Abstract:

Objective To investigate the accuracy of three dimensional facial measurement system based on structured light projection, and explore the methods to reduce noise of the output images. Methods The known object for calibration was measured by the measurement system to correct the parameters of the system and enhance the measurement accuracy. The mechanism of noise was analysed, and the noise and sundry of the images were eliminated. Results The parameters of each assembly of system were obtained by calculation and calibrated, and the measurement accuracy (0.028 mm) of three dimensional facial measurement system based on structured light projection was increased. Application of image processing technology reduced the noise and sundry of output images. Conclusion The accuracy of three dimensional facial measurement system based on structured light projection is high. The image output is reliable, and can be clinically used in facial scanning and three dimensional reconstruction.

Key words: accuracy, calibration, structured light, measurement system