Shift estimation method based fringe pattern profilometry and performance comparison

Abstract In this paper, we present and study two approaches to fringe pattern profilometry (FPP) technique. Based ongeneralized analysis model for fringe pattern profilometry (FPP), Inverse Function based Shift Estimation(IFSE) and Gradient-based Shift Estimation (GSE) are proposed to calculate the shift between the projectedand deformed fringe patterns. Further, computer simulations are utilized to compare the performancebetween these two methods. Meanwhile, we also compare these two algorithms with Phase Shift profilometry(PSP). It can be seen that both of these two shift estimation algorithms can significantly improve themeasurement accuracy when the fringe patterns are nonlinearly distorted. Publication Details This article was originally published as: Hu, Y, Xi, J, Li, E, Chicharo, J & Yang, Z, Shift estimation methodbased fringe pattern profilometry and performance comparison, Proceedings of the Eighth InternationalSymposium on Signal Processing and Its Applications, 28-31 August 2005, 2, 863-866. Copyright IEEE 2005