Ternary Gray code-based phase unwrapping for 3D measurement using binary patterns with projector defocusing.

The three-dimensional measurement technique using binary pattern projection with projector defocusing has become increasingly important due to its high speed and high accuracy. To obtain even faster speed without sacrificing accuracy, a ternary Gray code-based phase-unwrapping method is proposed by using even fewer binary patterns, which makes it possible to efficiently and accurately unwrap the phase. Theoretical analysis, simulations, and experiments are presented to validate the proposed method's efficiency and robustness.

[1]  Song Zhang,et al.  Superfast 3D absolute shape measurement using five binary patterns , 2017 .

[2]  Dongliang Zheng,et al.  Phase coding method for absolute phase retrieval with a large number of codewords. , 2012, Optics express.

[3]  Song Zhang,et al.  Flexible 3-D shape measurement using projector defocusing. , 2009, Optics letters.

[4]  Lei Huang,et al.  Temporal phase unwrapping algorithms for fringe projection profilometry: A comparative review , 2016 .

[5]  Pramod Rastogi,et al.  Moving ahead with phase , 2007 .

[6]  Yajun Wang,et al.  Novel phase-coding method for absolute phase retrieval. , 2012, Optics letters.

[7]  Jae-Sang Hyun,et al.  Enhanced two-frequency phase-shifting method. , 2016, Applied optics.

[8]  Xiang Peng,et al.  Flexible phase error compensation based on Hilbert transform in phase shifting profilometry. , 2015, Optics express.

[9]  J. Jones,et al.  Optimum frequency selection in multifrequency interferometry. , 2003, Optics letters.

[10]  Vincent Chen,et al.  High-resolution, real-time three-dimensional shape measurement on graphics processing unit , 2014 .

[11]  Beiwen Li,et al.  Novel calibration method for structured-light system with an out-of-focus projector. , 2014, Applied optics.

[12]  G Sansoni,et al.  Three-dimensional vision based on a combination of gray-code and phase-shift light projection: analysis and compensation of the systematic errors. , 1999, Applied optics.

[13]  Pramod Rastogi,et al.  Fringe analysis: Premise and perspectives , 2012 .

[14]  Yi Ding,et al.  Recovering the absolute phase maps of two fringe patterns with selected frequencies. , 2011, Optics letters.

[15]  Dung A. Nguyen,et al.  Some practical considerations in fringe projection profilometry , 2010 .

[16]  D.-J. Guan,et al.  GENERALIZED GRAY CODES WITH APPLICATIONS , 1998 .

[17]  Yong Li,et al.  Three-Dimensional Shape Measurement Using Binary Spatio-Temporal Encoded Illumination , 2009 .

[18]  Dongliang Zheng,et al.  Absolute phase retrieval for defocused fringe projection three-dimensional measurement , 2014 .

[19]  Jonathan M. Huntley,et al.  Error-reduction methods for shape measurement by temporal phase unwrapping , 1997 .

[20]  Dongliang Zheng,et al.  Phase error analysis and compensation for phase shifting profilometry with projector defocusing. , 2016, Applied optics.

[21]  Gastón A. Ayubi,et al.  Pulse-width modulation in defocused three-dimensional fringe projection. , 2010, Optics letters.

[22]  Xianyu Su,et al.  Automated phase-measuring profilometry using defocused projection of a Ronchi grating , 1992 .

[23]  Dongliang Zheng,et al.  Self-correction phase unwrapping method based on Gray-code light , 2012 .

[24]  Rigoberto Juarez-Salazar,et al.  Theory and algorithms of an efficient fringe analysis technology for automatic measurement applications. , 2015, Applied optics.

[25]  J C Wyant,et al.  Two-wavelength phase shifting interferometry. , 1984, Applied optics.

[26]  Zhongwei Li,et al.  Gamma-distorted fringe image modeling and accurate gamma correction for fast phase measuring profilometry. , 2011, Optics letters.

[27]  Haitao He,et al.  Gamma correction for digital fringe projection profilometry. , 2004, Applied optics.

[28]  Dongliang Zheng,et al.  Phase-shifting profilometry combined with Gray-code patterns projection: unwrapping error removal by an adaptive median filter. , 2017, Optics express.