Abstract

For a three-dimensional shape measurement system with a single projector and multiple cameras, registering patches from different cameras is crucial. Registration usually involves a complicated and time-consuming procedure. We propose a new method that can robustly match different patches via absolute phase without significantly increasing its cost. For y and z coordinates, the transformations from one camera to the other are approximated as third-order polynomial functions of the absolute phase. The x coordinates involve only translations and scalings. These functions are calibrated and only need to be determined once. Experiments demonstrated that the alignment error is within RMS $0.7\mathrm{mm}$.

© 2008 Optical Society of America

Three-dimensional shape measurement using a structured light system with dual projectors

Chufan Jiang, Beatrice Lim, and Song Zhang
Appl. Opt. 57(14) 3983-3990 (2018)

Accurate three dimensional body scanning system based on structured light

Haosong Yue, Yue Yu, Weihai Chen, and Xingming Wu
Opt. Express 26(22) 28544-28559 (2018)

Digital image correlation assisted absolute phase unwrapping

Yi-Hong Liao, Manzhu Xu, and Song Zhang
Opt. Express 30(18) 33022-33034 (2022)

Pixel-wise absolute phase unwrapping using geometric constraints of structured light system

Yatong An, Jae-Sang Hyun, and Song Zhang
Opt. Express 24(16) 18445-18459 (2016)

Accurate projector calibration method by using an optical coaxial camera

Shujun Huang, Lili Xie, Zhangying Wang, Zonghua Zhang, Feng Gao, and Xiangqian Jiang
Appl. Opt. 54(4) 789-795 (2015)