B. Li, Y. An and S. Zhang, "Single-shot absolute 3D shape measurement with Fourier transform profilometry," Appl. Opt., 2016; (accepted)
Fourier transform profilometry (FTP) is one of the frequently adopted three-dimensional (3D) shape measurement methods owing to its nature of single-shot 3D shape recovery, yet it is challenging to retrieve the absolute phase map solely from one single grayscale fringe image. This paper presents a computational framework that overcomes this limitation of FTP with digital fringe projection (DFP). By using geometric constraints, an absolute phase map can be retrieved point-by-point from one single grayscale fringe image. Experiments demonstrate the success of our proposed framework with single-shot absolute 3D shape measurement capability.