Jiang Chufan, Lim Beatrice, Zhang Song
Appl Opt. 2018 May 10;57(14):3983-3990. doi: 10.1364/AO.57.003983.
This paper introduces a structured light system with two projectors and one camera for three-dimensional (3D) shape measurement to alleviate problems created by a single projector such as the shadow problem. In particular, we developed (1) a system calibration framework that can accurately calibrate each such camera-projector system; (2) a residual error correction method based on the system error function; and (3) a data fusion method utilizing the angle between the projection direction and surface normal. Experimental results demonstrate that the proposed dual-projector structured light system improves the measurement accuracy besides extending the measurement range of a single projector system.
本文介绍了一种用于三维（3D）形状测量的具有两个投影仪和一个相机的结构光系统，以缓解由单个投影仪产生的诸如阴影问题等问题。具体而言，我们开发了（1）一种能够精确校准每个此类相机 - 投影仪系统的系统校准框架；（2）一种基于系统误差函数的残余误差校正方法；以及（3）一种利用投影方向与表面法线之间角度的数据融合方法。实验结果表明，所提出的双投影仪结构光系统除了扩展单个投影仪系统的测量范围之外，还提高了测量精度。
