3D Face Profilometry Based on Galvanometer Scanner with Infrared Fringe Projection in High Speed

Applied Sciences

Yanfei Hu¹  Qican Zhang²  Min Wang²  Chenghang Li²  Wei Lang²  Junpeng Xue³ 

[1] Artificial Intelligence Key Laboratory of Sichuan Province, Sichuan University of Science and Engineering, Zigong 643000, China;College of Electronics and Information Engineering, Sichuan University, Chengdu 610065, China;School of Aeronautics and Astronautics, Sichuan University, Chengdu 610065, China;

关键词: optical 3D measurement;    infrared fringe projection;    galvanometer scanner;    3D face recognition;    low-cost projector;   

DOI  :  10.3390/app9071458

来源: DOAJ

【 摘 要 】

Structured light 3D shape metrology has become a very important technique and one of the hot research topics in 3D face recognition. However, it is still very challenging to use the digital light projector (DLP) in a 3D scanner and achieve high-speed, low-cost, small-size, and infrared-illuminated measurements. Instead of using a DLP, this paper proposes to use a galvanometer scanner to project phase-shifted fringes with a projection speed of infrared fringes up to 500 fps. Moreover, the measurement accuracy of multi-frequency (hierarchical) and multi-wavelength (heterodyne) temporal phase unwrapping approaches implemented in this system is analyzed. The measurement accuracy of the two methods is better than 0.2 mm. Comparisons are made between this method and the classical DLP approach. This method can achieve a similar accuracy and repeatability compared to the classical DLP method when a face mask is measured. The experiments on real human face indicate that this proposed method can improve the field of 3D scanning applications at a lower cost.

【 授权许可】

Unknown