›› 2010, Vol. 30 ›› Issue (1): 66-.

• Original article (Basic research) • Previous Articles     Next Articles

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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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