title: Fast computer generated hologram calculation with a mini look-up table incorporated with radial symmetric interpolation.
abstract: The amount of heavy computation in Computer Generated Hologram (CGH) can be significantly reduced by pre-computing look-up tables. However, the huge memory usage of look-up tables is a major challenge. To address this problem, the Look-up tables can be efficiently compressed by methods such as radial symmetric interpolation. In this paper, we notice that there is still data redundancy in the look-up table of radial symmetric interpolation method and the table size can be further compressed to 5%-10% or even less of original, by our proposed mini look-up table approach based on Principal Component Analysis (PCA). The compressed look-up table in our scheme only occupies a memory size of around 200-300 KB or even less. Moreover, the proposed scheme will introduce almost no extra cost of computation speed slowdown and reconstructed image quality degradation, compared to conventional method.
authors.forename: Shuming
authors.initials: S
authors.lastname: Jiao
authors.forename: Zhaoyong
authors.initials: Z
authors.lastname: Zhuang
authors.forename: Wenbin
authors.initials: W
authors.lastname: Zou