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Optical Engineering

High-speed 3-D shape measurement based on digital fringe projection
Author(s): Peisen S. Huang; Chengping Zhang; Fu-Pen Chiang
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Paper Abstract

A high-speed 3-D shape measurement technique based on digital fringe projection has been developed and experimented. This technique uses a computer-generated color fringe pattern whose red, green, and blue channels are sinusoidal fringe patterns with a 120-deg phase shift between neighboring channels. When this color fringe pattern is sent to a digital-micromirror-device (DMD) based video projector with no color filter, three gray-scale fringe patterns are repeatedly projected to an object surface in sequence with a cycle time of approximately 10 ms. The three phase-shifted fringe patterns deformed by the object surface are captured by a CCD camera with proper synchronization between the camera and the projector. The 3-D shape of the object surface is reconstructed by using a phase wrapping and unwrapping algorithm and a phase-coordinate conversion algorithm. Experimental results demonstrated the feasibility of this technique for high-speed 3-D shape measurement with a potential measurement speed up to 100 Hz.

Paper Details

Date Published: 1 January 2003
PDF: 6 pages
Opt. Eng. 42(1) doi: 10.1117/1.1525272
Published in: Optical Engineering Volume 42, Issue 1
Show Author Affiliations
Peisen S. Huang, SUNY/Stony Brook (United States)
Chengping Zhang, SUNY/Stony Brook (United States)
Fu-Pen Chiang, SUNY/Stony Brook (United States)

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