Phase Error Immunity Optical Measurement System

Wan Tao He; Xiang Lin Meng; Can Zhao

doi:10.4028/www.scientific.net/AMR.142.194

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 142Phase Error Immunity Optical Measurement System

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.

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Periodical:

Advanced Materials Research (Volume 142)

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194-198

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.142.194

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Online since:

October 2010

Authors:

Wan Tao He, Xiang Lin Meng, Can Zhao

Keywords:

Digital Video Projector, Phase Error, Phase Measurement Profilometry, Phase Shifting

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