Paper Title:
Phase Error Immunity Optical Measurement System
  Abstract

In this paper, a 3D shape measurement system based on a digital fringe projection and phase-shifting technique was described. The fringe generated by a computer was projected onto the object by utilizing a digital video projector. Four steps phase shifting algorithm was used to calculate the 2π wrapping phase, and a heterodyne principle was used to unwrap the phase to obtain the real phase. Then the 3D coordinates object was calculated base on stereo vision algorithm by using the real phase as a constraint. Experiments demonstrated that the system was not sensitive to the phase error caused by the DVP’s nonlinearity.

  Info
Periodical
Edited by
Hun Guo, Zuo Dunwen, Tang Guoxing
Pages
194-198
DOI
10.4028/www.scientific.net/AMR.142.194
Citation
W. T. He, X. L. Meng, C. Zhao, "Phase Error Immunity Optical Measurement System", Advanced Materials Research, Vol. 142, pp. 194-198, 2011
Online since
October 2010
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