A simultaneous in- and out-of-plane displacement measurement method

Opt Lett. 2011 Jan 1;36(1):10-2. doi: 10.1364/OL.36.000010.

Abstract

A method is presented that allows real-time three-dimensional displacement maps to be obtained for deformable objects using a single color camera and a color fringe projector. The acquired images have speckle and fringe information embedded in them, which are separated using the R, G, and B color signals from a color CCD camera to permit the independent use of a two-dimensional digital image correlation to obtain the x- and y-direction displacements and fringe projection to obtain the displacement in the z direction.