Laser & Optoelectronics Progress, Volume. 62, Issue 14, 1415008(2025)

3D Reconstruction of Highly Reflective Surfaces Based on Transmissive Liquid Crystal Display

Xiuqing Shen1,2, Mingling Luo1,2, Meng Jia3, Lei Lü4, and Shiqian Wu1,2、*
Author Affiliations
  • 1School of Artificial Intelligence and Automation, Wuhan University of Science and Technology, Wuhan 430081, Hubei , China
  • 2Institute of Robotics and Intelligent Systems, Wuhan University of Science and Technology, Wuhan 430081, Hubei , China
  • 3College of Mechanical and Electrical Engineering, Xinxiang University, Xinxiang 453003, Henan , China
  • 4Institute for Complexity Science, Henan University of Technology, Zhengzhou 450001, Henan , China
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    In the process of 3D reconstruction of structured light, the local specular reflection of highly reflective objects can easily lead to overexposure in the camera, resulting in the loss of detailed features in the overexposed regions. To address this issue, this study proposes a 3D reconstruction method of high reflective object surface based on transmissive liquid crystal display (LCD). Specifically, a transmissive LCD is introduced between the complementary metal oxide semiconductor (CMOS) sensor and the camera lens. It is theoretically proved that the addition of LCD has no effect on the phase unwrapping results, and a calibration algorithm for LCD pixels and CMOS pixels is proposed to achieve pixel-level control of incident light intensity. The effect estimation model of the mismatch between LCD pixels and CMOS pixels is established and the system error is analyzed. The experimental results show that the method effectively regulates the intensity of the incident light in the highly reflective region. The dynamic range of the imaging system increases from 48.13 dB to 68.95 dB. The spherical fitting error of the standard sphere is 0.072 mm, the radius error is -0.0069 mm, and the flat fitting error of the standard plate is 0.063 mm. The proposed method achieves clear imaging of localized overexposed regions on the surface of the object, and the problem of missing 3D point cloud caused by local overexposure is significantly improved.

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    Xiuqing Shen, Mingling Luo, Meng Jia, Lei Lü, Shiqian Wu. 3D Reconstruction of Highly Reflective Surfaces Based on Transmissive Liquid Crystal Display[J]. Laser & Optoelectronics Progress, 2025, 62(14): 1415008

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    Paper Information

    Category: Machine Vision

    Received: Jan. 16, 2025

    Accepted: Feb. 17, 2025

    Published Online: Jul. 4, 2025

    The Author Email: Shiqian Wu (shiqian.wu@wust.edu.cn)

    DOI:10.3788/LOP250530

    CSTR:32186.14.LOP250530

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