Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/75721
Title: High-quality octa-level fringe pattern generation for improving the noise characteristics of measured depth maps
Authors: Xu, ZX 
Chan, YH 
Lun, DPK 
Issue Date: 2017
Publisher: Elsevier
Source: Optics and lasers in engineering, 2017, v. 98, p. 99-106 How to cite?
Journal: Optics and lasers in engineering 
Abstract: Since the introduction of the binary defocusing technique, various algorithms have been proposed to optimize binary fringe patterns for reducing the phase root mean square (rms) error. Our recent study showed that octa-level fringe patterns can further reduce the phase rms error at no extra cost and patch-based fringe patterns can cause harmonic distortion to the measured depth map. This paper presents a novel method to produce patch-based octa-level fringe patterns of ideal noise characteristics by (1) formulating the optimization problem in a better way, (2) starting the optimization process with a better initial estimate and (3) adopting a necessity-oriented strategy to refine the fringe patterns during the optimization process.
URI: http://hdl.handle.net/10397/75721
ISSN: 0143-8166
EISSN: 1873-0302
DOI: 10.1016/j.optlaseng.2017.06.011
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