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中文摘要：
多投影器大屏幕显示系统的一项关键技术是如何实现多个投影器的精确校准。本文提出一种基于反向条纹投影原理的，简单、快速．高精度的校准方法．谊方法通过投影正弦条纹测量屏幕相位分布，建立投影器和摄像机像素之间的几何传递关系，然后根据期望图像为每个投影器产生各自的投影图像。该方法仅需一部摄像机，并且无须对它或投影器进行标定，屏幕也无须是平面。实验结果表明，在摄像机方向观察可以得到几何校准良好的图像，校准精度可达到亚像素级．
英文摘要：
One of the key technologies of multi-projector display systems for large screen is the alignment of the projectors. In this paper, we proposed a simple, fast, highly precise approach of geometric alignment based on the principle of inverse fringe projection. Only one camera is necessary to this approach. And there is no need to calibrate the camera or projectors. The screen needs not to be flat either. After the phase measurement of the screen by projecting the sine fringes, the geometric relationships between projectors and camera are identified. According to these relationships and the wanted image, pre-adjusted images for each projector are generated. When these images are projected on the screen, an image identical to the wanted image is observed in the direction of the camera. A sub-pixel accuracy of alignment can be achieved.
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