We propose a novel approach of phase unwrapping without using additional pattern projection. Based on a stereo camera setup, an image segmentation of each view in areas without height jumps larger than a fringe period is necessary. Within these segments, phase unwrapping is potentially without error. Alignment of phase maps between the two views is realized by an identification process of one correspondence point.
ACCESS THE FULL ARTICLE
Andreas Breitbarth, Eric Müller, Peter Kühmstedt, Gunther Notni, Joachim Denzler, "Phase unwrapping of fringe images for dynamic 3D measurements without additional pattern projection," Proc. SPIE 9489, Dimensional Optical Metrology and Inspection for Practical Applications IV, 948903 (14 May 2015);