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Title: Shape measurement using one frame projected sawtooth fringe pattern
Authors: Chen, Lujie
Quan, Chenggen
Tay, Cho Jui
Fu, Yu
Keywords: DRNTU::Science::Physics::Optics and light
Issue Date: 2005
Source: Chen, L., Quan, C., Tay, C. J., & Fu, Y. (2005). Shape measurement using one frame projected sawtooth fringe pattern. Optics Communications, 246(4-6), 275-284.
Series/Report no.: Optics communications
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.
DOI: 10.1016/j.optcom.2004.10.079
Rights: This is the author created version of a work that has been peer reviewed and accepted for publication by Optics Communications, Elsevier. It incorporates referee’s comments but changes resulting from the publishing process, such as copyediting, structural formatting, may not be reflected in this document. The published version is available at: [DOI:].
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:TL Journal Articles

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