An Imagery-to-Source Mapping for Phase-Shifting Profilometry Using Consumer-grade Equipment

Consumer-grade projector and camera are both fabricated to be nonlinear for better visual effect, and hence induce significant errors in optical-based profilometry. Previous methods improve the 3D reconstruction ability of consumer-grade equipment in an error compensation way, but are challenged by the accuracy bottleneck due to the compensation basis. In this paper, an imagery-to-source (IS) mapping approach is proposed to break through the accuracy bottleneck, by eliminating all of the nonlinear errors in theory. Furthermore, it is easy implementation and does not need additional projections for tedious error pre-calibration. Simulation and experimental results confirm the validity of the proposed method.