GPU-assisted high-resolution, real-time 3-D shape measurement

被引:85
作者
Zhang, Song
Royer, Dale
Yau, Shing-Tung
机构
[1] Harvard Univ, Dept Math, Cambridge, MA 02138 USA
[2] Geometr Informat Inc, Somerville, MA 02143 USA
[3] Harvard Univ, Dept Math, Cambridge, MA 02138 USA
来源
OPTICS EXPRESS | 2006年 / 14卷 / 20期
关键词
D O I
10.1364/OE.14.009120
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
This paper describes a Graphics Processing Unit (GPU)-assisted real-time three-dimensional shape measurement system. Our experiments demonstrated that the absolute coordinates calculation and rendering speed of a GPU is more than four times faster than that of a dual CPU workstation with the same graphics card. By implementing the GPU into our system, we realized simultaneous absolute coordinate acquisition, reconstruction and display at 30 frames per second with a resolution of approximately 266K points per frame. Moreover, a 2+1 phase-shifting algorithm was employed to alleviate the measurement error caused by motion. Applications of the system include medical imaging, manufacturing, entertainment, and security. (c) 2006 Optical Society of America
引用
收藏
页码:9120 / 9129
页数:10
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