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Fast computation of hologram patterns of a 3D object using run-length encoding and novel look-up table methods

机译:使用游程编码和新颖的查找表方法快速计算3D对象的全息图图案

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摘要

In this paper we propose a new approach for fast generation of computer-generated holograms (CGHs) of a 3D object by using the run-length encoding (RLE) and the novel look-up table (N-LUT) methods. With the RLE method, spatially redundant data of a 3D object are extracted and regrouped into the N-point redundancy map according to the number of the adjacent object points having the same 3D value. Based on this redundancy map, N-point principle fringe patterns (PFPs) are newly calculated by using the 1-point PFP of the N-LUT, and the CGH pattern for the 3D object is generated with these N-point PFPs. In this approach, object points to be involved in calculation of the CGH pattern can be dramatically reduced and, as a result, an increase of computational speed can be obtained. Some experiments with a test 3D object are carried out and the results are compared to those of the conventional methods.
机译:在本文中,我们提出了一种通过使用游程长度编码(RLE)和新颖的查找表(N-LUT)方法快速生成3D对象的计算机生成的全息图(CGH)的新方法。使用RLE方法,根据具有相同3D值的相邻对象点的数量,提取3D对象的空间冗余数据并将其重新分组为N点冗余图。基于该冗余图,通过使用N-LUT的1点PFP重新计算N点主条纹图案(PFP),并使用这些N点PFP生成3D对象的CGH模式。在这种方法中,可以大大减少CGH模式的计算中涉及的目标点,结果,可以提高计算速度。使用测试3D对象进行了一些实验,并将结果与​​常规方法进行了比较。

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