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Optical Engineering

Alternate time-space coding for structured light system
Author(s): Li Xu; Dan Zeng; Zhijiang Zhang; Yiwen Wu
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Paper Abstract

Based on an analysis of maximum stripe deformation (due to depth change on surfaces) and measuring resolution limits, a principle of spatial periodicity used for coding is proposed. When spatial periodicity is used for coding, the resolution is greatly improved, or the number of patterns is greatly reduced for real-time structured light systems. A novel coded pattern for real-time structured light systems is presented, which is based on spatial periodicity. The coding pattern allows range scanning of moving objects with easy implementation of decoding and high measurement resolution. Using alternate time-space coding in a structured light system, we achieve a measurement speed of 20 frames per second with two stripe patterns.

Paper Details

Date Published: 1 December 2008
PDF: 10 pages
Opt. Eng. 47(12) 127201 doi: 10.1117/1.3037338
Published in: Optical Engineering Volume 47, Issue 12
Show Author Affiliations
Li Xu, Shanghai Univ. (China)
Dan Zeng, Shanghai Univ. (China)
Zhijiang Zhang, Shanghai Univ. (China)
Yiwen Wu, Shanghai Univ. (China)

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