A versatile approach to incorporate distorted fringe patterns into fringe projection profilometry

In this paper, we present a calibration procedure for the FPP system that enables the adoption of arbitrarily distorted fringe patterns where the distortions are not eligible to be known before the projection. The calibration process includes solving the PnP problem and adopting the pixel-wise calibration method. During the calibration process, a novel phase artifacts removal method has been developed. Circular and hyperbolic patterns were successfully tested in the experiment, and the results demonstrate the effectiveness of the proposed method. We expect this research to broaden the spectrum of patterns and the variety of projector devices for the FPP system.