Three-Dimensional Measurement System of Fringe-Structured Light Based on High-Speed LED Array

Xiehui Geng; Jingming Song; Lei Zhang; Chao Zuo; Mingjie Sun

doi:10.3788/LOP223404

Laser & Optoelectronics Progress, Volume. 60, Issue 8, 0811015(2023)

Three-Dimensional Measurement System of Fringe-Structured Light Based on High-Speed LED Array

Xiehui Geng¹, Jingming Song¹, Lei Zhang², Chao Zuo³, and Mingjie Sun^1、*

¹School of Instrument Science and Optoelectronic Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China

²The Eleventh Research Institute of China Electronics Technology Group, Beijing 100015, China

³School of Electronic and Optical Engineering, Nanjing University of Science and Technology, Nanjing 210094, Jiangsu , China

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Fig. 1. Principle schematic diagram of structured light 3D measurement system based on high-speed LED array

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Fig. 2. Physical picture of 3D measurement system based on high-speed LED array

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Fig. 3. Measured object and static phase shift fringe patterns. (a) Measured ladder object; (b)(c)(d)three-step phase-shifting fringe pattern; (e)(f)(g)(h) four-step phase-shifting fringe pattern

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Fig. 4. Results of image processing by phase-shift method and multi-frequency heterodyne method. (a)(b) Wrapped phase; (c) absolute phase

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Fig. 5. 3D measurement result of static ladder objects

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Fig. 6. Dynamic phase shift fringe patterns. (a) (b)(c) Three-step phase-shifting fringe patterns; (d) (e)(f)(g) four-step phase-shifting fringe patterns

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Fig. 7. 3D measurement result of dynamic ladder objects

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Table 1. Absolute height error of each step face of the dynamic step object
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Table 1. Absolute height error of each step face of the dynamic step object
Step surface No. Step surface 1 Step surface 2 Step surface 3（benchmark） Step surface 4
Absolute height error 0 -0.02 -0.01 -0.05

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Xiehui Geng, Jingming Song, Lei Zhang, Chao Zuo, Mingjie Sun. Three-Dimensional Measurement System of Fringe-Structured Light Based on High-Speed LED Array[J]. Laser & Optoelectronics Progress, 2023, 60(8): 0811015

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