Year
2016
Degree Name
Doctor of Philosophy
Recommended Citation
Huang, Zhengrong, Improving the performance of fringe projection profilometry by accurate geometric modelling and system calibration, Doctor of Philosophy thesis, , University of Wollongong, 2016. https://ro.uow.edu.au/theses/4594
Abstract
This thesis presents a number of new techniques to improve the accuracy of threedimensional (3D) shape measurement using fringe projection profilometry (FPP).
Firstly, approaches for camera calibration are systematically investigated, and a new method is proposed to achieve sub-pixel mapping between the liquid crystal display (LCD) and the charge-coupled device (CCD). This approach uses vertical and horizontal fringe patterns and centrelines displayed by a LCD as the calibration board. A set of pixels on the designed circle edge are then mapped from the LCD onto the CCD. The circle centres are extracted on the CCD by the least-squares circle fitting technique. In contrast to existing approaches, which only use the horizontal and vertical fringe patterns, the new method is more flexible and accurate.
FoR codes (2008)
0906 ELECTRICAL AND ELECTRONIC ENGINEERING
Unless otherwise indicated, the views expressed in this thesis are those of the author and do not necessarily represent the views of the University of Wollongong.