Abstract

A new multi-frequency fringe projection method is proposed to reduce the nonlinear phase error in 3-D shape measurements using an adaptive compensation method. The phase error of the traditional fringe projection technique originates from various sources such as lens distortion, the nonlinear imaging system and a nonsinusoidal fringe pattern that can be very difficult to model. Inherent possibility of phase error appearing hinders one from accurate 3-D reconstruction. In this work, an adaptive compensation algorithm is introduced to reduce adaptively the phase error resulting from the fringe projection profilometry. Three different frequencies are used for generating the gratings of projector and conveyed to the four-step phase-shifting procedure to measure the objects of very discontinuous surfaces. The 3-D shape results show that this proposed technique succeeds in reconstructing the 3-D shape of any type of objects.

© 2018 Optical Society of Korea

Profilometry without phase unwrapping using multi-frequency and four-step phase-shift sinusoidal fringe projection

Eun-Hee Kim, Joonku Hahn, Hwi Kim, and Byoungho Lee
Opt. Express 17(10) 7818-7830 (2009)

Multi-frequency color-marked fringe projection profilometry for fast 3D shape measurement of complex objects

Chao Jiang, Shuhai Jia, Jun Dong, Qingchen Bao, Jia Yang, Qin Lian, and Dichen Li
Opt. Express 23(19) 24152-24162 (2015)

Correction of projector nonlinearity in multi-frequency phase-shifting fringe projection profilometry

Shuo Xing and Hongwei Guo
Opt. Express 26(13) 16277-16291 (2018)

Phase error analysis and compensation for nonsinusoidal waveforms in phase-shifting digital fringe projection profilometry

Bing Pan, Qian Kemao, Lei Huang, and Anand Asundi
Opt. Lett. 34(4) 416-418 (2009)

Suppression of projector distortion in phase-measuring profilometry by projecting adaptive fringe patterns

Junzheng Peng, Xiaoli Liu, Dingnan Deng, Hongwei Guo, Zewei Cai, and Xiang Peng
Opt. Express 24(19) 21846-21860 (2016)