title: Automatic shadow moiré topography: a moving-light-source method.
abstract: 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.
authors.forename: J S
authors.initials: JS
authors.lastname: Lim
authors.forename: J
authors.initials: J
authors.lastname: Kim
authors.forename: M S
authors.initials: MS
authors.lastname: Chung