title: Least-squares fitting of carrier phase distribution by using a rational function in fringe projection profilometry [corrected].
abstract: A least-squares fitting technique for the carrier phase component in fringe projection profilometry is presented. The carrier phase distribution for an arbitrary measurement system can be perfectly described with a rational function, whose coefficients can be estimated by least-squares fitting to the measured reference phases, so that the restrictions and limitations in the existing techniques are eliminated.
authors.affiliation: Department of Precision Mechanical Engineering, Laboratory of Applied Optics and Metrology, Shanghai University, Shanghai, China. hw-guo@yeah.net
authors.forename: Hongwei
authors.initials: H
authors.lastname: Guo
authors.forename: Mingyi
authors.initials: M
authors.lastname: Chen
authors.forename: Peng
authors.initials: P
authors.lastname: Zheng