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Sensors 2017, 17(4), 734; doi:10.3390/s17040734

Real-Time and High-Resolution 3D Face Measurement via a Smart Active Optical Sensor

School of Applied Science and Civil Engineering, Beijing Institute of Technology, Zhuhai 519088, China
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Academic Editor: Vittorio M. N. Passaro
Received: 8 February 2017 / Revised: 28 March 2017 / Accepted: 29 March 2017 / Published: 31 March 2017
(This article belongs to the Section Physical Sensors)
View Full-Text   |   Download PDF [10350 KB, uploaded 31 March 2017]   |  

Abstract

The 3D measuring range and accuracy in traditional active optical sensing, such as Fourier transform profilometry, are influenced by the zero frequency of the captured patterns. The phase-shifting technique is commonly applied to remove the zero component. However, this phase-shifting method must capture several fringe patterns with phase difference, thereby influencing the real-time performance. This study introduces a smart active optical sensor, in which a composite pattern is utilized. The composite pattern efficiently combines several phase-shifting fringes and carrier frequencies. The method can remove zero frequency by using only one pattern. Model face reconstruction and human face measurement were employed to study the validity and feasibility of this method. Results show no distinct decrease in the precision of the novel method unlike the traditional phase-shifting method. The texture mapping technique was utilized to reconstruct a nature-appearance 3D digital face. View Full-Text
Keywords: active optical sensor; structured light; composite pattern; 3D face measurement active optical sensor; structured light; composite pattern; 3D face measurement
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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You, Y.; Shen, Y.; Zhang, G.; Xing, X. Real-Time and High-Resolution 3D Face Measurement via a Smart Active Optical Sensor. Sensors 2017, 17, 734.

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