High-precision 3D Shape Measurement Based on Time-resolved VCSEL

被引:0
|
作者
Ye, Jing [1 ,2 ]
Zhou, Changhe [1 ]
Li, Chao [1 ]
Miao, Chaofeng [1 ]
机构
[1] Chinese Acad Sci, Lab Informat Opt & Optoelect Technol, Shanghai Inst Opt & Fine Mech, Shanghai 201800, Peoples R China
[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
关键词
3D measurement; VCSEL; time-resolved; structured light projection; binocular vision;
D O I
10.1117/12.2502417
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
High-speed and high-precision human face 3D shape measurement plays a very important role in diverse applications such as human-computer interaction, 3D face recognition, Virtual Reality. This paper introduces a structured light system based on VCSEL(Vertical Cavity Surface Emitting Laser) with one simulated projectors and two camera for human face 3D shape measurement. Large-scale production cost of VCSEL is low, because of the manufacturing process compatible with LED. VCSEL has the advantages of projecting a large area of diffractive structure light and easy to integrate into lens array internally. The process of VCSEL projecting the structural light that changes over time to human face is simulated by computer. The ICP algorithm is used to match the image of single frame structure light from the right camera to the left camera. A single frame image of three-dimensional face point cloud is obtained by using binocular stereo vision principle. The multi-frame images of point cloud that change along time series are superposed to obtain higher density point cloud data and improve the measurement accuracy. This 3D measurement based on VCSEL has advantages of low cost, high precision, and small size and should be useful for practical applications.
引用
收藏
页数:6
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