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Dynamic control of multiple focal-plane projections for eliminating defocus and occlusion

机译:动态控制多个焦平面投影以消除散焦和遮挡

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This paper presents a novel dynamic control of multiple focal-plane projections. Our approach multiplexes the projectors' focal-planes so that all the displayed images are focused. The projectors are placed at various locations with various directions in the scene so that there is no occlusion of the projection light even for dynamically moving objects. Our approach compensates for defocus blur, oblique blur (loss of high-spatial-frequency components according to the incidence angle of the projection light), and cast shadows of projected images. This is achieved by selecting an optimal projector that can display the finest image for each point of the object surface by comparing the projectors' point spread functions (PSFs). The proposed approach requires geometric calibration to be performed only once in advance. Our approach can compute PSFs without any additional calibrations even when the surface moves if it is tracked by an external sensor. The method is particularly useful in interactive systems in which the object to be projected is tracked.
机译:本文提出了一种新颖的动态控制多个焦平面投影的方法。我们的方法对投影仪的焦平面进行了多路复用,以便所有显示的图像都得到聚焦。将投影仪放置在场景中具有不同方向的不同位置,因此即使对于动态移动的对象也不会遮挡投影光。我们的方法可以补偿散焦模糊,斜向模糊(根据投影光的入射角,高空间频率分量的损失)以及投影图像的阴影。这是通过选择一个最佳的投影仪来实现的,该投影仪可以通过比较投影仪的点扩散函数(PSF)来显示物体表面每个点的最佳图像。所提出的方法要求几何校准仅预先执行一次。即使表面移动(如果由外部传感器跟踪),我们的方法也可以计算PSF,而无需任何其他校准。该方法在跟踪要投影的对象的交互式系统中特别有用。

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