Kim Seung-Cheol, Kim Jae-Ho, Kim Eun-Soo
3D Display Research Center, Department of Electronic Engineering, Kwangwoon University, 447-1 Wolge-Dong, Nowon-Gu, Seoul 139-701, Korea.
Appl Opt. 2011 Jul 1;50(19):3375-82. doi: 10.1364/AO.50.003375.
In this paper, we propose an approach, new to our knowledge, to effectively generate and reconstruct the resolution-enhanced computer-generated hologram (CGH) of three-dimensional (3-D) objects with a significantly reduced in memory size novel look-up table (N-LUT) by taking into account a relationship between the pixel pitch and reconstruction distance of the hologram pattern. In the proposed method, a CGH pattern composed of shifted versions of the principal fringe patterns (PFPs) with a short pixel pitch can be reconstructed just by using the CGH generated with a much longer pixel pitch by controlling the hologram reconstruction distance. Accordingly, the corresponding N-LUT memory size required for resolution-enhanced hologram patterns can be significantly reduced in the proposed method. To confirm the feasibility of the proposed method, experiments are carried out and the results are discussed.
在本文中，据我们所知，我们提出了一种新方法，通过考虑全息图图案的像素间距与重建距离之间的关系，利用显著减小内存大小的新型查找表（N-LUT）有效地生成并重建三维（3-D）物体的分辨率增强型计算机生成全息图（CGH）。在所提出的方法中，通过控制全息图重建距离，仅使用具有更长像素间距生成的CGH，就可以重建由具有短像素间距的主条纹图案（PFP）的移位版本组成的CGH图案。因此，在所提出的方法中，分辨率增强型全息图图案所需的相应N-LUT内存大小可以显著减小。为了证实所提出方法的可行性，进行了实验并对结果进行了讨论。
