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    Title: High-speed digital color fringe projection technique for three-dimensional facial measurements
    Authors: Liu, Cheng-Yang;Chang, Li-Jen;Wang, Chung-Yi
    Keywords: Fringe projection;digital structured light;facial measurement
    Date: 2016-04-03
    Issue Date: 2017-05-09 02:10:40 (UTC+8)
    Publisher: SPIE
    Abstract: Digital fringe projection techniques have been widely studied in industrial applications because of the advantages of high accuracy, fast acquisition and non-contact operation. In this study, a single-shot high-speed digital color fringe projection technique is proposed to measure three-dimensional (3-D) facial features. The light source used in the measurement system is structured light with color fringe patterns. A projector with digital light processing is used as light source to project color structured light onto face. The distorted fringe pattern image is captured by the 3-CCD color camera and encoded into red, green and blue channels. The phase-shifting algorithm and quality guided path unwrapping algorithm are used to calculate absolute phase map. The detecting angle of the color camera is adjusted by using a motorized stage. Finally, a complete 3-D facial feature is obtained by our technique. We have successfully achieved simultaneous 3-D phase acquisition, reconstruction and exhibition at a speed of 0.5 s. The experimental results may provide a novel, high accuracy and real-time 3-D shape measurement for facial recognition system.
    Relation: Proc. of SPIE Vol. 9896, 989611
    DOI: 10.1117/12.2220774
    Appears in Collections:[機械與機電工程學系暨研究所] 會議論文

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