Simulation study on improving the spatial resolution of absolute phase map recovered by fringe projection profilometry with the images of different resolutions

Yi Ding; Qiong Liu; Zhenwei Yuan; Lei Lu; Jiangtao Xi

doi:10.1117/12.2326823

24 July 2018 Simulation study on improving the spatial resolution of absolute phase map recovered by fringe projection profilometry with the images of different resolutions

Yi Ding, Qiong Liu, Zhenwei Yuan, Lei Lu, Jiangtao Xi

Author Affiliations +

Proceedings Volume 10827, Sixth International Conference on Optical and Photonic Engineering (icOPEN 2018); 108271P (2018) https://doi.org/10.1117/12.2326823
Event: Sixth International Conference on Optical and Photonic Engineering (icOPEN 2018), 2018, Shanghai, China

Abstract

In fringe projection profilometry, three-dimensional reconstruction result with higher spatial resolution could provide more detailed description of the measured object. To increase the spatial resolution of three-dimensional reconstruction result, this paper proposes a method to improve the resolution of the absolute phase map recovered in fringe projection profilometry with the digital images of different resolutions. In this method, the same fringe patterns are sampled with the images of different resolutions, the absolute phase maps of different resolutions are obtained respectively. Since the sampling points of the digital images under different resolutions are not coincident, additional ground truth depth information of the object surface is obtained. To emerge an absolute phase map with higher resolution, an algorithm is developed to fuse the absolute maps in different spatial resolutions together. The proposed method can be used to obtain a three-dimensional reconstruction result with higher spatial resolution for various applications. The effectiveness of our proposed method is validated by simulation results.

Citation Download Citation

Yi Ding, Qiong Liu, Zhenwei Yuan, Lei Lu, and Jiangtao Xi "Simulation study on improving the spatial resolution of absolute phase map recovered by fringe projection profilometry with the images of different resolutions", Proc. SPIE 10827, Sixth International Conference on Optical and Photonic Engineering (icOPEN 2018), 108271P (24 July 2018); https://doi.org/10.1117/12.2326823

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KEYWORDS

Image resolution

Spatial resolution

Fringe analysis

Cameras

Projection systems

3D image processing

3D metrology

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