Tailored Displays to Compensate for Visual Aberrations - SIGGRAPH Presentation
-
Upload
vitor-pamplona -
Category
Technology
-
view
14.446 -
download
1
description
Transcript of Tailored Displays to Compensate for Visual Aberrations - SIGGRAPH Presentation
Vitor PamplonaManuel M. OliveiraDaniel AliagaRamesh Raskar
Tailored Displays to Compensatefor Visual Aberrations
TailoredDisplays.com
Emmetropic View
Farsighted View(need of reading glasses)
Tailored Dashboard(actual results)
Sean Dreilinger
Chris Streeter
Chris Streeter
Focal RangePerfect vision
Computer Generated Glasses
Myope’sFocal Range
Computer Generated Glasses
Focusing Here
Subject’s Focal Point Does Not Change
Computer Generated Glasses
Hyperope’s and Presbyope’sFocal Range
Focusing Here
Subject’s Focal Point Does Not Change
We can create a hologram for the visually impaired
because uncorrected individuals are already not focusing on the display
and there is no mismatch between convergence and accommodation
Tailoring ProcessFocusing Here
Myopic View: -3D
He can focus up to 33cm (12in)
Distance Display-Eye: 50cm
BlurredImage
Light-fieldDisplay
Tailoring ProcessHe can focus up to 33cm (12in)
Distance Display-Eye: 50cm
Focusing HereMyopic View: -3D
Light-fieldDisplay
Tailoring ProcessHe can focus up to 33cm (12in)
Distance Display-Eye: 50cm
Focusing HereMyopic View: -3D
Light-fieldDisplay
Tailoring ProcessHe can focus up to 33cm (12in)
Distance Display-Eye: 50cm
Focusing Here
1 arc-minute Resolution
Pixel Size of 96um at 33cm
Myopic View: -3D
Pixel Size and Alignment
Pixel on the Virtual image
1 arcminute
Zoomed Version
Pixel Size and Alignment
Pixel on the Virtual image
1 arcminute
Zoomed Version
Working Resolution: 1800 DPI
Channel Size4.7um!
$150 Vuzix HMD LCD
Astigmatism: angle-dependent refractive error
Astigmatism: angle-dependent refractive error
Astigmatism: angle-dependent refractive error
Light-fieldDisplay
Tailoring Process Subject’s prescription -2D -1D @ 90
He focus at 30cm to 50cm.Two Points in Focus
Where the Subject’s
Accommodate
30cm50cm
Wavefront Maps
0 degrees
90 degrees
Sphere: -2DCylinder: -1DAxis: 90°
Lens focal length in k
k
Zernike Polynomials
Light-fieldDisplay
f(k)
Inputs
LCD1
LCD1 LCD2
Tailoring Process
Eye
Single-Focus Multi-Depth Displays
Only one object
Display
Eye
S1 S2
R
k
t a
f(k)
Cataract Maps
Nuclear Cataract Cataract density in k
k
Sub-capsular Cataract
Avoiding CataractsDisplay
Eye
NormalizationDisplay
Eye
Dual Stack of LCDs
Projector
Camera – the “eye”
Vuzix Head Mounted Display
Lens Array
Vuzix Head Mounted Display
Input Image
As Seen on a Regular Display As Seen on a Tailored Display
3.25D Myopic Eyeusing a display at
37cm from the eye
Resolution of 0.87 arc minutes
No Cataract Tailoring Tailored for CataractsNo Cataracts
Input
3.5D Myopic Eye with Nuclear Cataracts
Display at 47cm from the eye
Resolution of 0.87 arc minutes
20cm / 7.8in
Presbyopic +3D View
Out-of-focus Blur Size
20cm / 7.8in
Presbyopic +3D View
Out-of-focus Blur Size8cmx8cm Size
20cm / 7.8in
50cm / 20in
Presbyopic +3D View
Out-of-focus Blur Size8cmx8cm Size
1x1cm Light-Field Display
20cm / 7.8in
Presbyopic +3D View
Out-of-focus Blur Size
20cm / 7.8in
Presbyopic +3D View
Out-of-focus Blur Size8cmx8cm Size
20cm / 7.8in
50cm / 20in
Presbyopic +3D View
Out-of-focus Blur Size8cmx8cm Size
20cm / 7.8in
Presbyopic +3D View
Out-of-focus Blur Size
20cm / 7.8in
Presbyopic +3D View
Out-of-focus Blur Size8cmx8cm Size
20cm / 7.8in
50cm / 20in
Presbyopic +3D View
Out-of-focus Blur Size8cmx8cm Size
User Evaluations: Strong Myopia
1D 2D 3D 4D 5D0D
Focal RangePerfect vision
User Evaluations: Strong Myopia
1D 2D 3D 4D 5D0D
5D
User Evaluations: Strong Myopia
1D 2D 3D 4D 5D0D
User Evaluations: Strong Myopia
1D 2D 3D 4D 5D0D
5D
User Evaluations: Strong Myopia
13 Volunteers, 16 votes each.
User Evaluations: Astigmatism
10 Volunteers, 16 votes each.
User Evaluations: Keratoconus
1 Volunteer, 80 votes.
AAAA ARegulardisplay
Tailoreddisplay
User Evaluations: Keratoconus
1 Volunteer, 80 votes.
Multi-Focus Multi-Depth Display
Input Image Input Depth
+0.5D from the Image Plane -0.5D from the Image Plane
61
Limitations • Eyes fixed relative to the display– Similar to glasses-free 3D Displays– Higher-order requires more fixation
• High-resolution LCD panels (PPI) – Giga-pixel displays for monitors
• Other ocular diseases may not be corrected for
Tailored Displays to Compensatefor Visual Aberrations
• The First Multi-depth Multi-focus Display– Time-varying Optical Corrections– Resolution around 1 arc minute
• Correcting for a Wide Range of Conditions:– Myopia, Hyperopia and Presbyopia– Astigmatism and High-order aberrations– Cataracts
www.TailoredDisplays.com
Future Works• Retinal Diseases on the Tailoring Pipeline– Retinal Displacements (Image Warping)– Color Blindness (Re-coloring)
• Light-Field to Hardware Mapping– Temporal and Context-Based Optimizations for Brightness
• Stereo Multi-focus Multi-depth Displays
Vitor PamplonaManuel M. OliveiraDaniel AliagaRamesh Raskar
Tailored Displays to Compensatefor Visual Aberrations
TailoredDisplays.com
Tailored Displays to Compensatefor Visual Aberrations
• The First Multi-depth Multi-focus Display– Time-varying Optical Corrections– Resolution around 1 arc minute
• Correcting for a Wide Range of Conditions:– Myopia, Hyperopia and Presbyopia– Astigmatism and High-order aberrations– Cataracts
www.TailoredDisplays.com
Cell Phone-based Refractive Measurements
The Inverse of Shack-Hartmann
Vitor Pamplona, Manuel Oliveira, Ankit Mohan, Ramesh Raskar
Unique, low-costquantitative lens mapping
CATRA: Quantitative Cataract Maps
Vitor Pamplona, Erick Passos, Jan Zizka, Everett Lawson, Esteban Clua, Manuel Oliveira, Ramesh Raskar
Measurement Correction
Need
Tailored Displays to Compensatefor Visual Aberrations
• The First Multi-depth Multi-focus Display– Time-varying Optical Corrections– Resolution around 1 arc minute
• Correcting for a Wide Range of Conditions:– Myopia, Hyperopia and Presbyopia– Astigmatism and High-order aberrations– Cataracts
www.TailoredDisplays.com
Super Vision?
Challenge
4 billion people estimated to need eyeglasses
worldwide
Source: Essilor, Infomarket 2009, CPB Research,
Emerging Asia
Africa & Middle East
Latin America
Europe North America
0.00
0.20
0.40
0.60
0.80
1.00
1.20
1.40
1.60
1.80
1.70
0.50
0.13 0.10 0.02
Billions of People with Uncorrected Refractive Error, by
Region
Challenge
90% of high-school kids are myopic inmajor Asian cities
Morgan et al. 2012. Science 2012.
Due to:
1. Heavy “near work” 2. Intensity of education.3. Games, computers and TV.4. Insufficient time spent
outdoors.
User Experience Design Challenges
Eye Glasses Contact Lenses
Multi-focals
Surgery Adaptive optics
Adaptive spectacles
Tailoring
Technology Coated Hard Lenses+Frame
Flexible/Hard Lenses
Hard Lenses with many
focal powers
LASIK and Cataract Surgery
Dynamic micro mirror
array on contacts
Liquid / Electronic / Mechanic
Lenses
Parallax Barrier
Cost in the US <$100 <$50 ~$200 ~$2,000 Expensive $30 Feature
Quality 1 arc-min 1 arc-min 1 arc-min 1 arc-min 1 arc-min 1 arc-min 1 arc-min
Astigmatism Yes Yes Yes Yes Yes No Yes
Cataracts No No No Yes Yes No Yes
Keratoconus No Yes No No No No Yes
Adaptive No No No No Yes Yes Yes
Carry on Yes No Yes No No Yes No
Need doctor Yes Yes Yes Yes ? No No
Maintenance Easy Medium Easy Nothing Hard Medium Easy
Invasive No Yes No Yes Yes No No
Needs expert, Annoying Experience, Limited
User Evaluations: Strong Myopia
1D 2D 3D 4D 5D0D
User Evaluations: Strong Myopia
1D 2D 3D 4D 5D0D
5D
User Evaluations: Strong Myopia
1D 2D 3D 4D 5D0D