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

被引：8

作者：

Gong, Yuanzheng ^{[1
]}

Zhang, Song ^{[1
]}

机构：

[1] Iowa State Univ, Dept Mech Engn, Ames, IA 50011 USA

来源：

OPTICAL ENGINEERING | 2011年 / 50卷 / 02期

关键词：

phase shifting; real time; three-dimensional; defocusing;

D O I：

10.1117/1.3534798

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

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. (c) 2011 Society of Photo-Optical Instrumentation Engineers (SPIE). [DOI: 10.1117/1.3534798]

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