An Improved Method of Stoilov Algorithm Adapting to Phase Measuring Profilometry
一种改进型Stoilov算法相位测量轮廓术

A new improved method based on active controlling of phase-shifting has been proposed. Five frames of sinusoidal gratings with exactly the same known phase-shifting value were programmed actively. While the five gratings are projected to the measured object one by one, five frames of distorted fringes are captured by CCD camera synchronously. If the known phase-shifting value substitute for the phase-shifting value calculated from distorted fringes in Stoilov’s algorithm, the accuracy of the 3D profile reconstruction may be improved obviously. Experiments showed that the average absolute error is less than 0.07, and the mean square error is less than 0.07.