Structured light field 3D imaging
In this paper, we propose a method by means of light field imaging under structured illumination to deal with high dynamic range 3D imaging. Fringe patterns are projected onto a scene and modulated by the scene depth then a structured light field is detected using light field recording devices. The structured light field contains information about ray direction and phase-encoded depth, via which the scene depth can be estimated from different directions. The multidirectional depth estimation can achieve high dynamic 3D imaging effectively. We analyzed and derived the phase-depth mapping in the structured light field and then proposed a flexible ray-based calibration approach to determine the independent mapping coefficients for each ray. Experimental results demonstrated the validity of the proposed method to perform high-quality 3D imaging for highly and lowly reflective surfaces.
figshare Academic Research System
Cai, Zewei; Liu, Xiaoli; Wu, Jiachen; Peng, Xiang; Li, Ameng; Gao, Bruce Z.; Yin, Yongkai (2016), "Structured light field 3D imaging", figshare Academic Research System, doi: 10.6084/m9.figshare.c.3766157