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High-Efficiency Acquisition of Ray-Space using Radon Transform

机译:使用Radon变换高效捕获射线空间

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摘要

In this paper, we propose a method for high efficiency acquisition of Ray-Space for FTV (Free viewpoint TV). In this research, incomplete data is directly captured by a novel device, i.e. photodiode/lens array, and transformed to full information by Radon transform. We must capture the large amount of data in conventional acquisition of Ray-Space using multiple cameras. However Ray-space has redundancy because it consists of set of lines which depend on depth of objects. We use the Radon transform to exploit this redundancy. The Radon transform is set of projection data along different directions. Thus Ray-space can be reconstructed from projection data in limited range by the inverse Radon transform. Capturing the part of projection data correspond to capturing sums of several rays by 1 pixel. We have simulated reconstruction of Ray-space projection data which was computed by computer simulation of capturing device. As a result, by using fewer pixels than rays, we could reduce the information to reconstruct Ray-space.
机译:在本文中,我们提出了一种用于FTV(自由视点电视)的Ray-Space的高效捕获方法。在这项研究中,不完全的数据被新颖的设备即光电二极管/透镜阵列直接捕获,并通过Radon变换转换为完整的信息。在使用多台摄像机进行的常规Ray-Space采集中,我们必须捕获大量数据。但是,射线空间具有冗余性,因为它由取决于对象深度的一组线组成。我们使用Radon变换来利用这种冗余。 Radon变换是沿不同方向的一组投影数据。因此,可以通过Radon逆变换从有限范围内的投影数据重建射线空间。捕获投影数据的一部分对应于捕获1像素的几条光线之和。我们已经模拟了射线空间投影数据的重建,该重建是通过捕获设备的计算机模拟来计算的。结果,通过使用比射线少的像素,我们可以减少信息以重建射线空间。

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