Open AccessRay calibration and phase mapping for structured-light-field 3D reconstruction
Author(s) -
Zewei Cai,
Xiaoli Liu,
Xiang Peng,
Bruce Z. Gao
Publication year - 2018
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.26.007598
Subject(s) - light field , calibration , structured light , computer science , 3d reconstruction , phase (matter) , optics , parametric statistics , field (mathematics) , metric (unit) , iterative reconstruction , artificial intelligence , computer vision , physics , mathematics , statistics , operations management , quantum mechanics , pure mathematics , economics
In previous work, we presented a structured light field (SLF) method combining light field imaging with structured illumination to perform multi-view depth measurement. However, the previous work just accomplishes depth rather than 3D reconstruction. In this paper, we propose a novel active method involving ray calibration and phase mapping, to achieve SLF 3D reconstruction. We performed the ray calibration for the first time to determine each light field ray with metric spatio-angular parameters, making the SLF realize multi-view 3D reconstruction. Based on the ray parametric equation, we further derived the phase mapping in the SLF that spatial coordinates can be directly mapped from phase. A flexible calibration strategy was correspondently designed to determine mapping coefficients for each light field ray, achieving high-efficiency SLF 3D reconstruction. Experimental results demonstrated that the proposed method was suitable for high-efficiency multi-view 3D reconstruction in the SLF.