We introduce a new 3-D sensor based on a diffractive optical element (DOE). Structured light is obtained by the interference of two beams. The design of the projection unit has the following features: the system is very simple, small and cheap and the fringe spacing is easily adjustable. Fringes generated by the DOE interferometer are analyzed by Fast Fourier Transform (FFT) method, which produced a 3-D perspective plot. The technique and the experimental results of real surface profiles are given.
No takes yet. Share an insight, caveat, or question.
A 2001 study studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: