title: Flexible calibration technique for fringe-projection-based three-dimensional imaging.
abstract: Fringe projection profilometry (FPP) has evolved dramatically, with many highly demanded features for three-dimensional (3D) imaging, such as high accuracy, easy implementation, and capability of measuring multiple objects with complex shapes. A vital component for an FPP-based 3D imaging system is the calibration process. The existing calibration methods lack the ability to be flexibly compatible with various scales of the field of imaging. In this Letter, a technique to cope with this issue is presented; it employs a checkerboard along with practical considerations to ensure reliable and accurate calibration. The validity and practicality of the technique are verified by experiments.
authors.affiliation: Department of Electrical Engineering, The Catholic University of America, Washington, DC 20064, USA.
authors.forename: Minh
authors.initials: M
authors.lastname: Vo
authors.forename: Zhaoyang
authors.initials: Z
authors.lastname: Wang
authors.forename: Thang
authors.initials: T
authors.lastname: Hoang
authors.forename: Dung
authors.initials: D
authors.lastname: Nguyen