Projected Fringe Technique in 3D Surface Acquisition

Abstract

There have been increasing interest in 3D surface contouring technologies over the last decade. 3D surface contouring techniques have numerous applications in design and manufacturing, 3D contouring technology is also used in reverse engineering where construction of a CAD model from a physical part is required. We propose a system based in the projected fringe technique. We present here early results of a potentially fast, efficient and reliable method to extract the surface contour of 3D external objects. A View Sonic PJ551 digital projector is used as active light source, and a DFK 50H13 CCD camera with a DFG/LC1 grabber are used to grab images. One advantage of projected fringe technique is that allows acquiring dense 3D data in few seconds.