Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/87631
Title: Octal gray-code phase unwrapping for high-speed fringe projection profilometry
Authors: He, Xiaoyu
Zheng, Dongliang
Qian, Kemao
Keywords: Phase Unwrapping
Octal Gray Code
DRNTU::Engineering::Electrical and electronic engineering
Issue Date: 2019
Source: He, X., Zheng, D. & Qian, K. (2019). Octal gray-code phase unwrapping for high-speed fringe projection profilometry. IWAIT-IFMIA 2019
Abstract: The speed of a fringe projection profilometry system is of great importance for the measurement of dynamic objects. The previous quaternary gray-code phase unwrapping method uses only five patterns to recover an absolute phase which is suitable for high-speed measurement. However, this method requires a pre-knowledge of the minimum depth and it limits the object to move in a small range of depth. To extend the measurement range, we proposed an octal gray-code phase unwrapping method, in which five patterns are required. We apply this method to different objects and analysis the experiment results. This method can recover a good-quality phase map for sample objects, while its performance is decreased when the object is complex or with an improper defocusing level.
URI: https://hdl.handle.net/10356/87631
http://hdl.handle.net/10220/47663
Rights: © 2019 Institute of Electrical and Electronics Engineers (IEEE). All rights reserved. This paper was published in International Workshop on Advanced Image Technology (IWAIT) and is made available with permission of Institute of Electrical and Electronics Engineers (IEEE).
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:IGS Conference Papers

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