Zhang Song, Royer Dale, Yau Shing-Tung
Opt Express. 2006 Oct 2;14(20):9120-9. doi: 10.1364/oe.14.009120.
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.
本文介绍了一种图形处理单元（GPU）辅助的实时三维形状测量系统。我们的实验表明，GPU的绝对坐标计算和渲染速度比配备相同显卡的双CPU工作站快四倍以上。通过将GPU集成到我们的系统中，我们实现了以每秒30帧的速度同时进行绝对坐标采集、重建和显示，每帧分辨率约为266K点。此外，采用了2+1相移算法来减轻运动引起的测量误差。该系统的应用包括医学成像、制造、娱乐和安全领域。
