Abstract

This paper presents a novel two-frame fringe projection technique for real-time, accurate, and unambiguous three-dimensional (3D) measurement. One of the frames is a digital speckle pattern, and the other one is a composite image which is generated by fusing that speckle image with sinusoidal fringes. The contained sinusoidal component is used to obtain a wrapped phase map by Fourier transform profilometry, and the speckle image helps determine the fringe order for phase unwrapping. Compared with traditional methods, the proposed pattern scheme enables measurements of discontinuous surfaces with only two frames, greatly reducing the number of required patterns and thus reducing the sensitivity to movements. This merit makes the method very suitable for inspecting dynamic scenes. Moreover, it shows close performance in measurement accuracy compared with the phase-shifting method from our experiments. To process data in real time, a Compute Unified Device Architecture–enabled graphics processing unit is adopted to accelerate some time-consuming computations. With our system, measurements can be performed at 21 frames per second with a resolution of 307,000 points per frame.

© 2015 Optical Society of America

High-speed 3D shape measurement using the optimized composite fringe patterns and stereo-assisted structured light system

Wei Yin, Shijie Feng, Tianyang Tao, Lei Huang, Maciej Trusiak, Qian Chen, and Chao Zuo
Opt. Express 27(3) 2411-2431 (2019)

High-precision real-time 3D shape measurement using a bi-frequency scheme and multi-view system

Tianyang Tao, Qian Chen, Shijie Feng, Yan Hu, Jian Da, and Chao Zuo
Appl. Opt. 56(13) 3646-3653 (2017)

Dynamic microscopic 3D shape measurement based on marker-embedded Fourier transform profilometry

Yan Hu, Qian Chen, Yuzhen Zhang, Shijie Feng, Tianyang Tao, Hui Li, Wei Yin, and Chao Zuo
Appl. Opt. 57(4) 772-780 (2018)

Real-time 3D shape measurement of dynamic scenes using fringe projection profilometry: lightweight NAS-optimized dual frequency deep learning approach

Yueyang Li, Zhouejie Wu, Junfei Shen, and Qican Zhang
Opt. Express 31(24) 40803-40823 (2023)

Unambiguous 3D measurement from speckle-embedded fringe

Yueyi Zhang, Zhiwei Xiong, and Feng Wu
Appl. Opt. 52(32) 7797-7805 (2013)