camera-based sensory substitution and augmented reality for the blind (acivs 2011)
DESCRIPTION
Abstract Camera-based sensory substitution and augmented reality for the blind. Rapid developments in mobile computing and sensing with smartphones open up new opportunities for augmenting our reality with information and experiences that our senses could not directly provide. One current trend is towards augmented reality applications based on location-based services (LBS) and computer vision. Apart from mass-market uses, there also arise new uses in niche markets such as technology for the blind. Despite its more limited commercial value, I will in my talk discuss how this particular niche market is extremely interesting for bringing together research on man-machine interfaces, computer vision, brain plasticity, synesthesia, and even contemporary philosophy. It is also an area where fundamental research (e.g. on brain plasticity) may prove directly socially relevant through applications that are readily made globally available over the web, and that run on mass-market devices. Hybrid applications convey via sound or touch the raw visual information from live camera views as well as semantic information for nearby items of interest, as recognized through computer vision or identified through location databases. Moreover, neuroscience research has in the past decade established that the visual cortex of blind people becomes responsive to sound and touch, thus adding some biological plausibility to the idea of creating non-invasive sensory by-passes in the form of sensory substitution.TRANSCRIPT
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ACIVS 2011 - Camera-based sensory substitution and augmented reality for the blind
E-mail: [email protected] (Peter Meijer) URL: http://www.artificialvision.com
© 2011 Peter B.L. Meijer
ACIVS 2011August 22-25, Ghent, Belgium
Peter Meijer
Metamodal BVThe Netherlands
www.artificialvision.com
Camera-based sensory substitution
and augmented reality for the blind
0%
© 2011 Peter B.L. Meijer
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Camera-based sensory substitution
and augmented reality for the blind
Overview
• introduction
• sensory substitution
synesthesia & philosophy
• brain plasticity
• augmented reality
• conclusions
Overview
• introduction
• sensory substitution
synesthesia & philosophy
• brain plasticity
• augmented reality
• conclusions
cameraglasses
2%
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ACIVS 2011 - Camera-based sensory substitution and augmented reality for the blind
E-mail: [email protected] (Peter Meijer) URL: http://www.artificialvision.com
© 2011 Peter B.L. Meijer
3
Camera-based sensory substitution
and augmented reality for the blind
Overview
• introduction
• sensory substitution
synesthesia & philosophy
• brain plasticity
• augmented reality
• conclusions
Overview
• introduction
• sensory substitution
synesthesia & philosophy
• brain plasticity
• augmented reality
• conclusions
4%
© 2011 Peter B.L. Meijer
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Computer vision & vision technology
for the blind
Computer vision, thinking of…
- contrast enhancement, dehazing (cataracts) - color identification / filtering
- edge detection / enhancement (low acuity vision)
- OCR (Optical Character Recognition)- object detection / recognition (SIFT, SURF, …)
- collision threat analysis (e.g. optic flow)- saliency detection / enhancement - SLAM (Simultaneous Localization and Mapping)
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ACIVS 2011 - Camera-based sensory substitution and augmented reality for the blind
E-mail: [email protected] (Peter Meijer) URL: http://www.artificialvision.com
© 2011 Peter B.L. Meijer
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Computer vision & vision technology
for the blind
Goals
- improve blind orientation and mobility (O&M)through obstacle detection, navigation aids,object recognition (also crowdsourcing), …
- offer “sight” through sensory substitution(convey live camera views by sound or touch)
[also hybrid approaches and augmented reality]
9%
© 2011 Peter B.L. Meijer
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Electronic glasses…
Image enhancement visually impaired
Bristol Mobility Aid - University of the West of England, Bristol, UKMobility performance of low-vision adults using an electronic mobility aid, Jones et al., Clinical and Experimental Optometry 2006 89:1 pp 10-17
11%
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ACIVS 2011 - Camera-based sensory substitution and augmented reality for the blind
E-mail: [email protected] (Peter Meijer) URL: http://www.artificialvision.com
© 2011 Peter B.L. Meijer
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Robotic navigation aid for the blind?
SLAM (Simultaneous Localization and Mapping), USC on NTDTV July 4 2011
URL
James Weiland, USC Viterbi School of Engineering
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© 2011 Peter B.L. Meijer
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Computer vision & vision technology
for the blind (news headlines in 2011)
- few technologies ever make it out of the lab- cost of commercialization, bulky, unreliable,physical limitations (Kinect fails in sunshine), …
EYE21- Universitat Politècnica de València, Spain
NAVI - Universität Konstanz, Germany
Kinect for the Blind - Moscow Institute of Physics
& Technology, Russia (MS Imagine Cup 2011)
MS Kinect
Stereo vision
More examples KinectFusion next?
15%
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ACIVS 2011 - Camera-based sensory substitution and augmented reality for the blind
E-mail: [email protected] (Peter Meijer) URL: http://www.artificialvision.com
© 2011 Peter B.L. Meijer
9
How to give sight to the blind?
ubiquitous
cameras
mobile
computing
brain
plasticity
augmented
reality
computer
vision
when conventional
medical approaches
do not suffice…
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© 2011 Peter B.L. Meijer
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How to give sight to the blind?
The vOICe @ APA2011Michael Proulx
Preview
20%
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ACIVS 2011 - Camera-based sensory substitution and augmented reality for the blind
E-mail: [email protected] (Peter Meijer) URL: http://www.artificialvision.com
© 2011 Peter B.L. Meijer
11
gene therapy
retinal implants
cortical implants
LGN implants
sensory substitution
How to give sight to the blind?
when conventional
medical approaches
do not suffice
22%
© 2011 Peter B.L. Meijer
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Camera-based sensory substitution
and augmented reality for the blind
Overview
• introduction
• sensory substitution
synesthesia & philosophy
• brain plasticity
• augmented reality
• conclusions
Overview
• introduction
• sensory substitution
synesthesia & philosophy
• brain plasticity
• augmented reality
• conclusions
cameraglasses
25%
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ACIVS 2011 - Camera-based sensory substitution and augmented reality for the blind
E-mail: [email protected] (Peter Meijer) URL: http://www.artificialvision.com
© 2011 Peter B.L. Meijer
13
Sensory substitution
Tactile or auditory display
Wicab’s BrainPort® The vOICe
ear buds
camera
tongue display
camera
27%
© 2011 Peter B.L. Meijer
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The vOICe image-to-sound mapping
Fre
quency
Fre
quency
TimeTime
Spectrographicsynthesis
29%
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ACIVS 2011 - Camera-based sensory substitution and augmented reality for the blind
E-mail: [email protected] (Peter Meijer) URL: http://www.artificialvision.com
© 2011 Peter B.L. Meijer
15
Could this really work?
Check: map sounds back to images
The vOICe image-to-sound mapping
Yes!(at least technically)
Theory
31%
© 2011 Peter B.L. Meijer
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The vOICe image reconstruction
“Soundscape”
34%
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ACIVS 2011 - Camera-based sensory substitution and augmented reality for the blind
E-mail: [email protected] (Peter Meijer) URL: http://www.artificialvision.com
© 2011 Peter B.L. Meijer
17
The vOICe mental imagery?
Warning:
Representationmay dramaticallyaffect recognition!
36%
© 2011 Peter B.L. Meijer
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The vOICe demo sounds (1 of 5)
Fre
quency
Fre
quency
TimeTime
38%
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ACIVS 2011 - Camera-based sensory substitution and augmented reality for the blind
E-mail: [email protected] (Peter Meijer) URL: http://www.artificialvision.com
© 2011 Peter B.L. Meijer
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The vOICe demo sounds (2 of 5)
Fre
quency
Fre
quency
TimeTime
40%
© 2011 Peter B.L. Meijer
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The vOICe demo sounds (3 of 5)
Fre
quency
Fre
quency
TimeTime
43%
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ACIVS 2011 - Camera-based sensory substitution and augmented reality for the blind
E-mail: [email protected] (Peter Meijer) URL: http://www.artificialvision.com
© 2011 Peter B.L. Meijer
21
The vOICe demo sounds (4 of 5)
Fre
quency
Fre
quency
TimeTime
45%
© 2011 Peter B.L. Meijer
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The vOICe demo sounds (5 of 5)
Fre
quency
Fre
quency
TimeTime``Slow motion’’
Informational
masking? Apply
mental saccades
47%
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ACIVS 2011 - Camera-based sensory substitution and augmented reality for the blind
E-mail: [email protected] (Peter Meijer) URL: http://www.artificialvision.com
© 2011 Peter B.L. Meijer
23
Setups for The vOICe cost < $1000,
or < $500 when using a netbook PC
Michael Proulx
50%
© 2011 Peter B.L. Meijer
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Grasping exercise (can be mastered in a few hours)
52%
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ACIVS 2011 - Camera-based sensory substitution and augmented reality for the blind
E-mail: [email protected] (Peter Meijer) URL: http://www.artificialvision.com
© 2011 Peter B.L. Meijer
25
Grasping exercise (video clip from PLoS ONE 2008)Source: Proulx MJ, Stoerig P, Ludowig E, Knoll I, 2008 Seeing ‘Where’ through the Ears: Effects of Learning-by-Doing and Long-Term Sensory Deprivation on Localization Based on Image-to-Sound Substitution. PLoS ONE 3(3)
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© 2011 Peter B.L. Meijer
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[early blind] Metamodal LLC, California: NSF-fundedSBIR Phase I project with The vOICe, Pasadena 2010
http://www.youtube.com/playlist?list=PLDE409461FD43A4D056%
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ACIVS 2011 - Camera-based sensory substitution and augmented reality for the blind
E-mail: [email protected] (Peter Meijer) URL: http://www.artificialvision.com
© 2011 Peter B.L. Meijer
27
[late-blind] Metamodal LLC, California: NSF-fundedSBIR Phase I project with The vOICe, Pasadena 2010
59% http://www.youtube.com/playlist?list=PLDE409461FD43A4D0
© 2011 Peter B.L. Meijer
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[late-blind] Wicab BrainPort® vision device, Pittsburgh 2011
Benchmarking?
61%
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ACIVS 2011 - Camera-based sensory substitution and augmented reality for the blind
E-mail: [email protected] (Peter Meijer) URL: http://www.artificialvision.com
© 2011 Peter B.L. Meijer
29
The vOICe
What do blind users see?
> In the top right hand corner of the picture is something which I
> recognise as architecture. It has 3 light coloured vertical columns
> below a sloping roof or sloping structure at the front above the
> columns. It is surrounded in shadow, especially on the right.
>
> Given that this is an architectural feature and not something smaller,
> that must mean that the vegetation on the top left of the picture is one
> or several trees.
> In the bottom left hand corner is 3 short dark columns and above it a V
> shaped band. These columns are shorter than the trees. To the right of
> the small columns are several short and long horizontal lines on a
> bright short band. I don't think they are columns but not sure what
> they are.
Photograph: courtesy Michael Larsen
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© 2011 Peter B.L. Meijer
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Camera-based sensory substitution
and augmented reality for the blind
Overview
• introduction
• sensory substitution
synesthesia & philosophy
• brain plasticity
• augmented reality
• conclusions
Overview
• introduction
• sensory substitution
synesthesia & philosophy
• brain plasticity
• augmented reality
• conclusions
65%
16
ACIVS 2011 - Camera-based sensory substitution and augmented reality for the blind
E-mail: [email protected] (Peter Meijer) URL: http://www.artificialvision.com
© 2011 Peter B.L. Meijer
31
PF, late blind female, US, after hearing about visual cortex implants:
Just sound?.... No, It is by far more, it is sight ! There IS true light preception generated by the vOICe. When I am not wearing the voice the light I perceive from a small slit in my left eye is a grey fog. When wearing the vOICe the image is light with all the little greys and blacks. Yet a definite light image. True it is not color but it is definitely like looking at a black and
white TV show. The light generated is very white and clear then it erodes down
the scale of color to the dark black. I don't really see adiffrence in this light as compaired to the "light phosphenes " they are talking about.
The vOICe
Artificial synesthesia?
See also: Ward, J. and Meijer, P., ``Visual experiences in the blind induced by an auditory
sensory substitution device'', Consciousness and Cognition, Vol. 19, 2010, pp. 492–500.
68%
© 2011 Peter B.L. Meijer
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Philosophy and The vOICe
What does
that mean?
What does
that mean?
17th Century 17th Century ““MolyneuxMolyneux problemproblem”” revisited?revisited?
•• Q:Q: Would someoneWould someone born blind, born blind, in case sight was restored,in case sight was restored,
be able to be able to tell a cube from a sphere by sighttell a cube from a sphere by sight alonealone??
A:A: ““NoNo”” ((according to John Locke & William according to John Locke & William MolyneuxMolyneux))
•• Q:Q: Would someoneWould someone born blind, born blind, using using ““seeingseeing--withwith--soundsound””,,
be able to be able to tell a cube from a sphere by tell a cube from a sphere by ““sightsight”” alonealone??
A:A: ““YesYes””
70%
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ACIVS 2011 - Camera-based sensory substitution and augmented reality for the blind
E-mail: [email protected] (Peter Meijer) URL: http://www.artificialvision.com
© 2011 Peter B.L. Meijer
33
Camera-based sensory substitution
and augmented reality for the blind
Overview
• introduction
• sensory substitution
synesthesia & philosophy
• brain plasticity
• augmented reality
• conclusions
Overview
• introduction
• sensory substitution
synesthesia & philosophy
• brain plasticity
• augmented reality
• conclusions
72%
© 2011 Peter B.L. Meijer
34
Neuroscience:Sound can activate “visual” cortex of blind
Kujala, Teija et al. (1995) “Visual cortex activation in blind humans during sound discrimination,” Neurosci. Lett. 183, 143–146
Early-blind person detecting pitch changes
75%
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ACIVS 2011 - Camera-based sensory substitution and augmented reality for the blind
E-mail: [email protected] (Peter Meijer) URL: http://www.artificialvision.com
© 2011 Peter B.L. Meijer
35
The vOICe in Neuroscience 2007:Cross-modal plasticity & visual sounds
Amedi et al., Nature Neuroscience, June 2007:
Shape conveyed by visual-to-auditory sensory substitutionactivates the lateral occipital complex
LOtv V1
dx.doi.org/10.1038/nn1912
Late-blind expert user of The vOICe(Talairach normalized inflated cortex reconstruction)
Percent signal change analysis of LOtv
LOtv acts as a metamodal operator for shape
77%
© 2011 Peter B.L. Meijer
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Harvard Medical School using The vOICe, Boston 2007
The Nature of Things
CBC television 2008
79%
19
ACIVS 2011 - Camera-based sensory substitution and augmented reality for the blind
E-mail: [email protected] (Peter Meijer) URL: http://www.artificialvision.com
© 2011 Peter B.L. Meijer
37
Camera-based sensory substitution
and augmented reality for the blind
Overview
• introduction
• sensory substitution
synesthesia & philosophy
• brain plasticity
• augmented reality
• conclusions
Overview
• introduction
• sensory substitution
synesthesia & philosophy
• brain plasticity
• augmented reality
• conclusions
81%
© 2011 Peter B.L. Meijer
38
Augmented Reality
Camera view overlays
Smartphone-based
visual overlays
• Wikitude
• Layar
• …
For those without eyesight,
a sonic overlay: The vOICe
Layar Wikitude
84%
20
ACIVS 2011 - Camera-based sensory substitution and augmented reality for the blind
E-mail: [email protected] (Peter Meijer) URL: http://www.artificialvision.com
© 2011 Peter B.L. Meijer
39
86%
© 2011 Peter B.L. Meijer
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live soundscapes
talking locator (GPS)
talking compass
color identifier/filters
tactile feedback
foveal enlargement
The vOICe for Androidaugmented reality for the blind
voice commands multilingual (Russian, Spanish, Chinese, …)
barcode reader Google Goggles
88%
21
ACIVS 2011 - Camera-based sensory substitution and augmented reality for the blind
E-mail: [email protected] (Peter Meijer) URL: http://www.artificialvision.com
© 2011 Peter B.L. Meijer
41
The vOICe for Android
Google Analytics & mobile vision
Android Market
niche, yet in August 2011: 90,000+ total installs
4-week use: 135 countries
90%
© 2011 Peter B.L. Meijer
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Augmented Reality
Hands-free future?
Ralph Osterhout, EG 2011
93%
22
ACIVS 2011 - Camera-based sensory substitution and augmented reality for the blind
E-mail: [email protected] (Peter Meijer) URL: http://www.artificialvision.com
© 2011 Peter B.L. Meijer
43
Netbook + $30 USB camera glasses + optional $20 wide-angle lens
Back to reality: what blind users of The vOICe are using today
95%
© 2011 Peter B.L. Meijer
44
Camera-based sensory substitution
and augmented reality for the blind
Overview
• introduction
• sensory substitution
synesthesia & philosophy
• brain plasticity
• augmented reality
• conclusions
Overview
• introduction
• sensory substitution
synesthesia & philosophy
• brain plasticity
• augmented reality
• conclusions
97%
23
ACIVS 2011 - Camera-based sensory substitution and augmented reality for the blind
E-mail: [email protected] (Peter Meijer) URL: http://www.artificialvision.com
© 2011 Peter B.L. Meijer
45
Conclusions:
� Research ongoing
� Affordable
� Non-invasive
� Available worldwide
http://http://www.artificialvision.comwww.artificialvision.com
Camera-based sensory substitution
and augmented reality for the blind
with thanks to all blind users and research partners around the world!100%