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https://doi.org/10.1016/j.optcom.2004.10.079
Title: | Shape measurement using one frame projected sawtooth fringe pattern | Authors: | Chen, L. Quan, C. Tay, C.J. Fu, Y. |
Keywords: | Fringe projection Phase retrieval Phase unwrapping Sawtooth fringe pattern |
Issue Date: | 15-Feb-2005 | Citation: | Chen, L., Quan, C., Tay, C.J., Fu, Y. (2005-02-15). Shape measurement using one frame projected sawtooth fringe pattern. Optics Communications 246 (4-6) : 275-284. ScholarBank@NUS Repository. https://doi.org/10.1016/j.optcom.2004.10.079 | Abstract: | Fringe projection technique is a non-contact, full field shape measurement method. The object depth information is recorded as sinusoidal or square wave fringe patterns. The phase-shifting technique or Fourier transform method can be used to extract wrapped phase data and a continuous phase distribution can be retrieved by a phase unwrapping process. In this paper, a shape measurement method using one frame projected sawtooth fringe pattern is proposed. A computer-generated sawtooth pattern is projected by a programmable liquid crystal display (LCD) projector. The deformed sawtooth pattern encoding object shape is converted to a wrapped phase map without using phase shifting or Fourier transform and a continuous phase distribution is retrieved by a quality-guided phase unwrapping algorithm. A special phase quality map, capable of detecting invalid shadowed phase data, is proposed to facilitate the unwrapping process. © 2004 Elsevier B.V. All rights reserved. | Source Title: | Optics Communications | URI: | http://scholarbank.nus.edu.sg/handle/10635/61283 | ISSN: | 00304018 | DOI: | 10.1016/j.optcom.2004.10.079 |
Appears in Collections: | Staff Publications |
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