The principle of structured light and triangulation is used in a wide range of 3D optical
metrology applications, such as mechanical engineering, industrial monitoring, computer …

Two-frequency phase-shifting phase unwrapping and Gray-coded-based phase unwrapping
are two typical temporal phase unwrapping methods to recover discontinuous or spatially …

Fringe projection profilometry has been increasingly sought and applied in dynamic three-
dimensional (3D) shape measurement. In this work, a robust, high-efficiency 3D …

The multi-frequency temporal phase unwrapping (MF-TPU) method, as a classical phase
unwrapping algorithm for fringe projection techniques, has the ability to eliminate the phase …

For fringe projection profilometry (FPP), phase extraction accuracy determines three-
dimensional (3D) measurement precision. The combination of phase-shifting (PS) and multi …

The measuring technique combining a phase-shifting algorithm and Gray-code light has
been widely used in three-dimensional (3D) shape measurement for static scenes because …

Phase unwrapping, either spatial or temporal, plays an important role in fringe projection
profilometry (FPP) to recover a continuous phase map. Compared with the spatial phase …

Fringe projection profilometry based on temporal phase unwrapping (TPU) without error
propagation has been widely used to measure the 3-D shape of the complex scene. This …

In order to achieve a higher speed for fringe projection profilometry, we propose a
quaternary gray-code phase unwrapping method using only two defocused binary patterns …

Fringe projection profilometry (FPP) has become increasingly important in dynamic 3-D
shape measurement. In FPP, it is necessary to retrieve the phase of the measured object …