几何视频投影仪自动校准

Jamil Draréni, S. Roy, P. Sturm
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引用次数: 34

摘要

本文研究了视频投影仪的几何标定问题。像大多数以前的方法一样,我们也使用相机来观察平面上的投影。与以前的方法相反,我们既不需要校准相机,也不需要校准网格或其他关于场景的度量信息。因此,我们谈到投影仪的几何自动校准(GAP)。摄像机校准不需要的事实增加了该方法的可用性,同时消除了一个潜在的不准确来源,因为相机校准中的错误将不可避免地传播到投影仪校准。实验结果表明,与现有方法相比,该方法具有良好的稳定性和较好的结果。
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Geometric video projector auto-calibration
In this paper we address the problem of geometric calibration of video projectors. Like in most previous methods we also use a camera that observes the projection on a planar surface. Contrary to those previous methods, we neither require the camera to be calibrated nor the presence of a calibration grid or other metric information about the scene. We thus speak of geometric auto-calibration of projectors (GAP). The fact that camera calibration is not needed increases the usability of the method and at the same time eliminates one potential source of inaccuracy, since errors in the camera calibration would otherwise inevitably propagate through to the projector calibration. Our method enjoys a good stability and gives good results when compared against existing methods as depicted by our experiments.
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