Phase-shifting profilometry using binary patterns with projector defocusing has been widely used for high-speed 3D measurement. Recently, a ternary Gray-code based phase unwrapping method has been proposed, which enables to accurately unwrap the phase but reduces the required binary patterns. This paper presents a comparison between the ternary and the traditional binary Gray code-based phase unwrapping methods.

Date Published: 13 June 2017
PDF: 6 pages
Proc. SPIE 10449, Fifth International Conference on Optical and Photonics Engineering, 104491V (13 June 2017); doi: 10.1117/12.2270773

Published in SPIE Proceedings Vol. 10449:
Fifth International Conference on Optical and Photonics Engineering
Anand Krishna Asundi, Editor(s)