Real-time high dynamic range 3D measurement using fringe projection.

Fringe projection profilometry (FPP) is a widely used technique for real-time three-dimensional (3D) shape measurement. However, it tends to compromise when measuring objects that have a large variation range of surface reflectivity. In this paper, we present a FPP method that can increase the dynamic range for real-time 3D measurements. First, binary fringe patterns are projected to generate grayscale sinusoidal patterns with the defocusing technique. Each pattern is then captured twice with different exposure values in one projection period. With image fusion, surfaces under appropriate exposure are retained. To improve the real-time performance of high dynamic range (HDR) 3D shape measurements, we build a binocular fringe projection profilometry system that saves the number of patterns by geometry constraint. Further, to ensure the accuracy and robustness of HDR 3D measurements, we propose a mixed phase unwrapping method that can reduce phase unwrapping errors for dense fringe patterns. Experiment results show that the proposed method can realize accurate and real-time 3D measurement for HDR scenes at 28 frames per second.

[1]  Yunhui Yan,et al.  Fast 3D shape measurement using Fourier transform profilometry without phase unwrapping , 2016 .

[2]  Jason Geng,et al.  Structured-light 3D surface imaging: a tutorial , 2011 .

[3]  Qian Chen,et al.  High-speed real-time 3D shape measurement based on adaptive depth constraint. , 2018, Optics express.

[4]  Song Zhang,et al.  High dynamic range scanning technique , 2009 .

[5]  Avideh Zakhor,et al.  Consistent Stereo-Assisted Absolute Phase Unwrapping Methods for Structured Light Systems , 2012, IEEE Journal of Selected Topics in Signal Processing.

[6]  Qian Chen,et al.  Robust dynamic 3-D measurements with motion-compensated phase-shifting profilometry , 2018 .

[7]  Xiang Peng,et al.  Structured light field 3D imaging. , 2016, Optics express.

[8]  Anand K. Asundi,et al.  Micro Fourier Transform Profilometry (μFTP): 3D shape measurement at 10, 000 frames per second , 2017, ArXiv.

[9]  Eryi Hu,et al.  Study on a novel phase-recovering algorithm for partial intensity saturation in digital projection grating phase-shifting profilometry , 2010 .

[10]  K. Creath.  Step height measurement using two-wavelength phase-shifting interferometry. , 1987, Applied optics.

[11]  Liang Zhang,et al.  Fringe pattern analysis using deep learning , 2018, Advanced Photonics.

[12]  Hongzhi Jiang,et al.  High dynamic range fringe acquisition: A novel 3-D scanning technique for high-reflective surfaces , 2012 .

[13]  Jing Xu,et al.  A Robust Surface Coding Method for Optically Challenging Objects Using Structured Light , 2014, IEEE Transactions on Automation Science and Engineering.

[14]  Zhongwei Li,et al.  Fast phase measurement profilometry for arbitrary shape objects without phase unwrapping , 2013 .

[15]  Qian Chen,et al.  Phase shifting algorithms for fringe projection profilometry: A review , 2018, Optics and Lasers in Engineering.

[16]  Song Zhang,et al.  High dynamic range real-time 3D shape measurement. , 2016, Optics express.

[17]  Shijie Feng,et al.  High-dynamic-range 3D shape measurement based on time domain superposition , 2019, Measurement Science and Technology.

[18]  Beiwen Li,et al.  High-dynamic-range 3D shape measurement utilizing the transitioning state of digital micromirror device , 2018, Optics and Lasers in Engineering.

[19]  Shijie Feng,et al.  General solution for high dynamic range three-dimensional shape measurement using the fringe projection technique , 2014 .

[20]  Qian Chen,et al.  Robust and efficient multi-frequency temporal phase unwrapping: optimal fringe frequency and pattern sequence selection. , 2017, Optics express.

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

[22]  Zonghua Zhang,et al.  Review of single-shot 3D shape measurement by phase calculation-based fringe projection techniques , 2012 .

[23]  Basel Salahieh,et al.  Multi-polarization fringe projection imaging for high dynamic range objects. , 2014, Optics express.

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

[25]  M. Takeda,et al.  Fourier transform profilometry for the automatic measurement of 3-D object shapes. , 1983, Applied optics.

[26]  Qian Chen,et al.  High dynamic range 3D shape measurement based on the intensity response function of a camera. , 2018, Applied optics.

[27]  Joaquim Salvi,et al.  A state of the art in structured light patterns for surface profilometry , 2010, Pattern Recognit..

[28]  Qi Hao,et al.  Dual-frequency pattern scheme for high-speed 3-D shape measurement. , 2010, Optics express.

[29]  Zhang Liang,et al.  High dynamic range 3D measurements with fringe projection profilometry: a review , 2018 .