Fringe Projection Profilometry

Driven by industrial needs, medical applications, and entertainment, three-dimensional (3D) surface measurement techniques have received extensive studies. As one of the most popular techniques for non-contact 3D surface measurement, fringe projection profilometry (FPP) has been growing rapidly over the past decades. By leveraging the structured light illumination with triangulation, FPP has demonstrated its uniqueness with high measurement accuracy, fast speed, easy implementation, and robustness with imaging complex shapes of multiple objects. This chapter presents an overview of the mainstream methods for fringe generation and analysis. Typical error sources in FPP are discussed, and corresponding solutions are reviewed. In addition, representative applications of FPP in both industry and scientific studies are included.