Key points are not available for this paper at this time.
We present a method to obtain profilometry of a suitable ob- ject by fringe projection. The method is appropriate to the case of large objects as compared to the distance from the illuminating source, that is, a nonconstant equivalent wavelength. We develop an experiment to lat- erally displace a set of fringes on a sphere and obtain quantitative re- sults. There are several orientation parameters involved in the method, and a minimization algorithm is developed to adjust the values of some of them. A series of numerical experiments are performed on this method to test its accuracy under various circumstances. We show that the method can currently attain precisions of 'leq/80 (l eq stands for equiva- lent wavelength) and identify possible sources of error. © 2003 Society of
Luis Salas (Sat,) studied this question.