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Optical Engineering

High-resolution, high-speed three-dimensional shape measurement using projector defocusing
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Paper Abstract

We present a high-resolution, high-speed three-dimensional (3-D) shape measurement technique that can reach the speed limit of a digital fringe projection system without significantly increasing the system cost. Instead of generating sinusoidal fringe patterns by a computer directly, they are produced by defocusing binary ones. By this means, with a relatively inexpensive camera, the 3-D shape measurement system can double the previously maximum achievable speed and reach the refreshing rate of a digital-light-processing projector: 120 Hz.

Paper Details

Date Published: 1 February 2011
PDF: 7 pages
Opt. Eng. 50(2) 023603 doi: 10.1117/1.3534798
Published in: Optical Engineering Volume 50, Issue 2
Show Author Affiliations
Yuanzheng Gong, Iowa State Univ. (United States)
Song Zhang, Iowa State Univ. (United States)

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