Automatic shadow moiré topography: a moving-light-source method.
A method for automatically determining in real time the absolute order of shadow moiré fringes is developed. The intensity variations on an object surface caused by a light source moving with constant speed are analyzed by fast-Fourier-transform methods. Experimental results show that this procedure can be successfully applied to shadow moiré topography and does not require object surface continuity.
Lim
J S
JS
Kim
J
J
Chung
M S
MS