A novel structured light coding and decoding method for fast 3D reconstruction

Zhongjie Wang; Guanghui Lu; Hongbin Cai

doi:10.1117/12.2604551

5 October 2021 A novel structured light coding and decoding method for fast 3D reconstruction

Zhongjie Wang, Guanghui Lu, Hongbin Cai

Proceedings Volume 11911, 2nd International Conference on Computer Vision, Image, and Deep Learning; 119110L (2021) https://doi.org/10.1117/12.2604551
Event: 2nd International Conference on Computer Vision, Image and Deep Learning, 2021, Liuzhou, China

Abstract

In the process of structured light three-dimensional measurement, the absolute phase can be obtained from the wrapped phase and the period value K. The period value K directly determines the quality of the point cloud. This paper proposes a novel structured light fringe encoding and decoding scheme, which can quickly and accurately solve the period value K and the wrapped phase: it only needs to project four fringe patterns to recover the absolute phase. This method calculates the high-frequency wrapped phase based on two sinusoidal fringe patterns, then uses the step fringe pattern and the uniform fringe pattern to calculate the period value K of the wrapped phase, and uses the wrapped phase and the period value K to recover the absolute phase. Experimental tests show that the proposed method is accurate for fast 3D reconstruction.

Citation Download Citation

Zhongjie Wang, Guanghui Lu, and Hongbin Cai "A novel structured light coding and decoding method for fast 3D reconstruction", Proc. SPIE 11911, 2nd International Conference on Computer Vision, Image, and Deep Learning, 119110L (5 October 2021); https://doi.org/10.1117/12.2604551

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KEYWORDS

Fringe analysis

3D modeling

Phase shifts

Cameras

Projection systems

Structured light

Calibration

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