Phase error compensation based on Tree-Net using deep learning
Publication Name
Optics and Lasers in Engineering
Abstract
The nonlinear effect in phase shifting profilometry (PSP) is an essential source of phase error in 3D measurement. In this paper, we propose a universal phase error compensation method with a three-to-three deep learning framework (Tree-Net). Perfectly meeting the phase error compensation requirements, Tree-Net can construct six-step phase-shifting patterns from three-step. As a result, this compact network of fringe-to-fringe transformation has excellent performance when coping with different PSP systems after only one training. Experimental results demonstrate that the phase error can be reduced by about 90% in three-step PSP, which verified the effectiveness, universality, and robustness of the proposed method.
Open Access Status
This publication is not available as open access
Volume
143
Article Number
106628
Funding Number
JCYJ20190808153201654
Funding Sponsor
National Natural Science Foundation of China