A time-multiplexed neural network framework for enhancing focal cues in multi-depth 3D holographic displays from 2D image input
Optics and Lasers in Engineering,
Год журнала:
2025,
Номер
186, С. 108859 - 108859
Опубликована: Янв. 27, 2025
Язык: Английский
Motion Hologram: Jointly optimized hologram generation and motion planning for photorealistic 3D displays via reinforcement learning
Science Advances,
Год журнала:
2025,
Номер
11(5)
Опубликована: Янв. 29, 2025
Holography
is
capable
of
rendering
three-dimensional
scenes
with
full-depth
control
and
delivering
transformative
experiences
across
numerous
domains,
including
virtual
augmented
reality,
education,
communication.
However,
traditional
holography
presents
3D
unnatural
defocus
severe
speckles
due
to
the
limited
space
bandwidth
product
spatial
light
modulator
(SLM).
Here,
we
introduce
Motion
Hologram,
a
holographic
technique
that
accurately
portrays
photorealistic
speckle-free
scenes.
This
leverages
single
hologram
learnable
motion
trajectory,
which
are
jointly
optimized
within
deep
reinforcement
learning
framework.
Specifically,
experimentally
demonstrated
proposed
could
achieve
4-
5-dB
PSNR
improvement
focal
stacks
in
comparison
successfully
depict
speckle-free,
high-fidelity,
full-color
displays
using
only
commercial
SLM.
We
believe
method
promises
prospective
form
will
offer
immersive
viewing
for
audiences.
Язык: Английский
Real‐Time Rendering Framework for Holography
Computer Graphics Forum,
Год журнала:
2025,
Номер
unknown
Опубликована: Апрель 18, 2025
Abstract
With
the
advent
of
holographic
near‐eye
displays,
need
for
rendering
algorithms
that
output
holograms
instead
color
images
emerged.
These
usually
encode
phase
maps
alter
coherent
light
sources
such
result
from
diffraction
effects.
While
common
approaches
rely
on
translating
traditional
systems
to
in
a
post
processing
step,
we
developed
system
can
directly
map
Spatial
Light
Modulator
(SLM).
Our
hardware‐ray‐traced
sparse
point
distribution,
and
depth
mapping
enable
rapid
hologram
generation,
allowing
high‐quality
time‐multiplexed
holography
real‐time
content.
Additionally,
our
is
compatible
with
foveated
which
enables
further
performance
optimizations.
Язык: Английский
Focus-aware compression and image quality metric for 3D displays
Signal Processing,
Год журнала:
2025,
Номер
unknown, С. 110091 - 110091
Опубликована: Май 1, 2025
Язык: Английский
Direct amplitude-only hologram realized by broken symmetry
Science Advances,
Год журнала:
2024,
Номер
10(35)
Опубликована: Авг. 30, 2024
Holographic
displays
have
been
a
long-standing
ambition
for
decades
to
realize
true-to-life
reconstruction.
However,
their
practical
adoption
is
hindered
by
subpar
image
quality
compared
two-dimensional
displays,
which
fundamentally
limited
restricted
spatial
frequency
bandwidth
and
artifacts.
We
address
the
limitation
using
symmetry-broken
amplitude-only
light
modulator,
demonstrating
comparable
that
of
displays.
The
broken
conjugate
symmetry
induced
phase
noise
modulators
eliminates
causes
issues
in
holograms
allows
direct
reconstruction
without
additional
optical
elements.
proposed
method
provides
enhanced
robustness
against
artifacts
caused
sub-pixel
structures
modulators,
enabling
experimental
high-quality
holograms.
full
result
5-decibel
improvement
peak
signal-to-noise
ratio
state-of-the-art
Furthermore,
hologram
has
24
times
higher
efficiency
smaller
volume
than
traditional
while
real-time
synthesis
enabled
neural
network.
Язык: Английский
Holographic Parallax
Опубликована: Июнь 29, 2024
Язык: Английский
Interactive Multi-GPU Light Field Path Tracing Using Multi-Source Spatial Reprojection
Опубликована: Сен. 22, 2024
Язык: Английский
High space-bandwidth product DMD holographic display using gradient descent optimization
Optics Express,
Год журнала:
2024,
Номер
32(27), С. 48610 - 48610
Опубликована: Дек. 4, 2024
Digital
micromirror
devices
(DMDs),
owing
to
their
rapid
refresh
rates
and
ability
shape
particular
optical
patterns,
are
key
tools
for
holographic
3D
near-eye
displays.
However,
relying
on
a
single-sideband
(SSB)
filter
eliminate
crosstalk
from
zero-order
conjugate
noise
leads
an
enormous
decrease
in
the
utilization
of
spatial
bandwidth
product
(SBP).
In
this
paper,
we
develop
new
strategy
binary
hologram
optimization
framework
enable
full
SBP
DMD
display
by
minimizing
noise.
Meanwhile,
design
operator
estimate
binarization
process
during
procedure.
The
experimental
results
demonstrate
our
approach
can
achieve
higher
competitive
reconstruction
quality
compared
with
conventional
filtering
method.
Язык: Английский