Pixel-wise absolute phase unwrapping using geometric constraints of structured light system

Yatong An; Jae Sang Hyun; Song Zhang

doi:10.1364/OE.24.018445

Pixel-wise absolute phase unwrapping using geometric constraints of structured light system

Yatong An, Jae Sang Hyun, Song Zhang

Department of Mechanical Engineering

Research output: Contribution to journal › Article › peer-review

167 Citations (Scopus)

Abstract

This paper presents a method to unwrap phase pixel by pixel by solely using geometric constraints of the structured light system without requiring additional image acquisition or another camera. Specifically, an artificial absolute phase map, Φ_min, at a given virtual depth plane z = z_min, is created from geometric constraints of the calibrated structured light system; the wrapped phase is pixel-by-pixel unwrapped by referring to Φ_min. Since Φ_min is defined in the projector space, the unwrapped phase obtained from this method is absolute for each pixel. Experimental results demonstrate the success of this proposed novel absolute phase unwrapping method.

Original language	English
Pages (from-to)	18445-18459
Number of pages	15
Journal	Optics Express
Volume	24
Issue number	16
DOIs	https://doi.org/10.1364/OE.24.018445
Publication status	Published - 2016 Aug 8

Bibliographical note

Funding Information:
We would like to thank Beiwen Li, Chufan Jiang, and Bogdan Vlahov for proofreading and critiquing the entire paper. We also thank other students for their kind discussions. This study was sponsored by the National Science Foundation (NSF) under grant numbers CMMI-1521048. The views expressed in this paper are those of the authors and not necessarily those of the NSF.

Publisher Copyright:
© 2016 Optical Society of America.

All Science Journal Classification (ASJC) codes

Atomic and Molecular Physics, and Optics

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10.1364/OE.24.018445

Cite this

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Pixel-wise absolute phase unwrapping using geometric constraints of structured light system

Abstract

Bibliographical note

All Science Journal Classification (ASJC) codes

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