Gamma nonlinearity severely affects the accuracy of phase measuring profilometry (PMP).
Through averaging two phase maps with inverse errors, conventional methods including …

Phase unwrap** is one of the most important procedures in 3-D phase measurement
profilometry (PMP) and has attracted great research interest in the past few decades …

Phase-shifting algorithms are widely used for optical metrology that extract the phase from
several fringe patterns with phase shifts. However, accurate phase shifts are always the …

Reconstruction of moving target surfaces based on active image sensing techniques, such
as phase-shifting profilometry, has attracted intensive research in recent years. The …

Phase-shifting profilometry is extensively utilized for three-dimensional (3D) measurement.
However, because of gamma nonlinearity, the image intensities of the captured fringe …

Phase-shifting fringe projection profilometry is a widely used and important technique for
three-dimensional surface measurement, where N-step fixed-step phase-shifting algorithms …

Mainstream fringe projection profilometry (FPP) faces challenges in measuring low signal-to-
noise ratio intensity modulation areas, especially in shadow areas on objects and black …

Fringe projection profilometry (FPP) requires an auxiliary projection sequence or spatial
landmark to remove phase ambiguity, thereby severely limiting the measurement speed or …

Fringe projection profilometry is a significant method for three-dimensional measurement
due to its non-contact and high accuracy. However, the motion-induced error will lead to the …

The temporal phase unwrap** (TPU) method is widely adopted for its high measurement
accuracy and robustness. However, the existing TPU methods require additional fringe …