Kukolowicz Rafal, Kozacki Tomasz, Chlipala Maksymilian, Idicula Moncy Sajeev, Martinez-Carranza Juan, Finke Weronika, Gerej Izabela
Opt Express. 2024 Apr 8;32(8):14565-14581. doi: 10.1364/OE.517911.
In recent years, the development of holographic near-eye displays (HNED) has surpassed the progress of digital hologram recording systems, especially in terms of wide-angle viewing capabilities. Thus, there is capture-display parameters incompatibility, which makes it impossible to reconstruct recorded objects in wide-angle display. This paper presents a complete imaging chain extending the available content for wide-angle HNED of pupil and non-pupil configuration with narrow-angle digital holograms of real objects. To this end, a new framework based on the phase-space approach is proposed that includes a set of affine transformations required to account for all differences in capture-display cases. The developed method allows free manipulation of the geometry of reconstructed objects, including axial and lateral positioning and size scaling. At the same time, it has a low computational effort. The presented work is supported with non-paraxial formulas developed using the phase-space approach, enabling accurate tracing of the holographic signal, its reconstruction, and measuring appearing deformations. The applicability of the proposed hologram manipulation method is proven with experimental results of digital hologram reconstruction in wide-angle HNED.
近年来，全息近眼显示器（HNED）的发展已经超过了数字全息记录系统的进展，特别是在广角观看能力方面。因此，存在采集-显示参数不兼容的问题，这使得在广角显示中无法重建记录的物体。本文提出了一个完整的成像链，利用真实物体的窄角数字全息图，为广角HNED的瞳孔和非瞳孔配置扩展可用内容。为此，提出了一种基于相空间方法的新框架，该框架包括一组仿射变换，以考虑采集-显示情况中的所有差异。所开发的方法允许对重建物体的几何形状进行自由操作，包括轴向和横向定位以及尺寸缩放。同时，它的计算量较小。所呈现的工作得到了使用相空间方法开发的非傍轴公式的支持，能够精确追踪全息信号、其重建以及测量出现的变形。所提出的全息图操纵方法的适用性通过广角HNED中数字全息图重建的实验结果得到了验证。
