Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Neural \'{E}tendue Expander for Ultra-Wide-Angle High-Fidelity
  Holographic Display   Holographic displays can generate light fields by dynamically modulating the
wavefront of a coherent beam of light using a spatial light modulator,
promising rich virtual and augmented reality applications. However, the limited
spatial resolution of existing dynamic spatial light modulators imposes a tight
bound on the diffraction angle. As a result, today's holographic displays
possess low \'{e}tendue, which is the product of the display area and the
maximum solid angle of diffracted light. The low \'{e}tendue forces a sacrifice
of either the field of view (FOV) or the display size. In this work, we lift
this limitation by presenting neural \'{e}tendue expanders. This new breed of
optical elements, which is learned from a natural image dataset, enables higher
diffraction angles for ultra-wide FOV while maintaining both a compact form
factor and the fidelity of displayed contents to human viewers. With neural
\'{e}tendue expanders, we achieve 64$\times$ \'{e}tendue expansion of natural
images with reconstruction quality (measured in PSNR) over 29dB on simulated
retinal-resolution images. As a result, the proposed approach with expansion
factor 64$\times$ enables high-fidelity ultra-wide-angle holographic projection
of natural images using an 8K-pixel SLM, resulting in a 18.5 mm eyebox size and
2.18 steradians FOV, covering 85\% of the human stereo FOV.

23
The categories of this paper are: solv-int
8
The categories of this paper are: hep-ex
33
The categories of this paper are: plasm-ph
6
The categories of this paper are: astro-ph
11
The categories of this paper are: hep-lat
12
The categories of this paper are: nucl-th
21
The categories of this paper are: adap-org
31
The categories of this paper are: ao-sci
10
The categories of this paper are: q-bio
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The categories of this paper are: chao-dyn
5
The categories of this paper are: gr-qc
30
The categories of this paper are: q-alg
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The categories of this paper are: funct-an
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The categories of this paper are: chem-ph
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The categories of this paper are: cmp-lg
13
The categories of this paper are: quant-ph