Open Access Paper
28 December 2022 Three-dimensional reconstruction using phase-shifted square-wave patterns
Shenglan Yang, Li Lu, Jingsi Wu, Zonglin Lai, Fan Mo, Bo Chen
Author Affiliations +
Proceedings Volume 12506, Third International Conference on Computer Science and Communication Technology (ICCSCT 2022); 125063S (2022) https://doi.org/10.1117/12.2662015
Event: International Conference on Computer Science and Communication Technology (ICCSCT 2022), 2022, Beijing, China
Abstract
Among structured light strategies, phase measuring profilometry (PMP) is considered to be an accurate and robust 3D reconstruction method. However, in practical scenes, gamma distortion is an inevitable factor that affects the accuracy and resolution of the final measurement result. In this paper, we propose a square-wave encoding scheme, which is gammafree, and we also demonstrate why the scheme is immune to gamma distortion. Then, based on the epipolar geometry, the invalid phase is removed by the epipolar constraint. Experiments demonstrate that the method can effectively reconstruct the surface of the scanned object and remove the invalid phase. With the proposed method, the accuracy for reconstructing a vertical plane is effectively improved. The method can be an effective alternative in the gamma distorted systems.
© (2022) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Shenglan Yang, Li Lu, Jingsi Wu, Zonglin Lai, Fan Mo, and Bo Chen "Three-dimensional reconstruction using phase-shifted square-wave patterns", Proc. SPIE 12506, Third International Conference on Computer Science and Communication Technology (ICCSCT 2022), 125063S (28 December 2022); https://doi.org/10.1117/12.2662015
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KEYWORDS
Computer programming

Cameras

Laser imaging

Projection systems

Distortion

Structured light

Clouds

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