Holographic displays generate Three-Dimensional (3D) images by displaying
single-color holograms time-sequentially, each lit by a single-color light
source. However, representing each color one by one limits peak brightness and
dynamic range in holographic displays. This paper introduces a new driving
scheme, HoloHDR, for realizing higher dynamic range images in holographic
displays. Unlike the conventional driving scheme, in HoloHDR, three light
sources illuminate each displayed hologram simultaneously at various brightness
levels. In this way, HoloHDR reconstructs a multiplanar three-dimensional
target scene using consecutive multi-color holograms and persistence of vision.
We co-optimize multi-color holograms and required brightness levels from each
light source using a gradient descent-based optimizer with a combination of
application-specific loss terms. We experimentally demonstrate that HoloHDR can
increase the brightness levels in holographic displays up to three times with
support for a broader dynamic range, unlocking new potentials for perceptual
realism in holographic displays.Comment: 10 pages, 11 figure