Proseminar: Anwendungen für Augmented Reality

Application in Teaching: The Luminous Room

Xinxing Feng

July.05.2005

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Outline Introduction Example Applications

Illuminating Light Distributed Illuminating Light Urp(with Seep)

Getting Pixels in and out Display Capture I/O Bulb

Luminous Room Vision Techniques Seeing Spots Software Support: glimpser Toolkits: voodoo and dee-voodoo

Conclusion

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Introduction The Luminous Room

was built by

Tangible Media Group of

the MIT Media Laboratory I/O Bulb

two-way information: a projector a video camera

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Outline Introduction Example Applications

Illuminating Light Distributed Illuminating Light Urp(with Seep)

Getting Pixels in and out Display Capture I/O Bulb

Luminous Room Vision Techniques Seeing Spots Software Support: glimpser Toolkits: voodoo and dee-voodoo

Conclusion

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1. Illuminating Light Designed as a effective tool for optical engineers

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1. Illuminating Light (cont.) Holography

hologram-recording layout simulation physical optics &

digital light beams

Video

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2. Distributed Illuminating Light Distribution scheme The toolkit dee-voodoo Two modes of distributed

operation Each workspace is a

“window” onto a continuous optics workbench.

“I-see-what-you-see”.All workspaces are instances of the same underlying space.

Video

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3. Urp A system for urban planning (Stadtplanung)

shadows of buildings sunlight reflection from the glassface of the buildings

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3. Urp (cont.) Measurement Wind simulation based on Seep

The direction and length of those segments correspond to instant direction and intensity of the wind at the position.

Video

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Outline Introduction Example Applications

Illuminating Light Distributed Illuminating Light Urp(with Seep)

Getting Pixels in and out Display Capture I/O Bulb

Luminous Room Vision Techniques Seeing Spots Software Support: glimpser Toolkits: voodoo and dee-voodoo

Conclusion

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Display & Capture Three basic ways to enable display at an

architectural surface: hoary CRT, flat-panel display projection E-ink

Basic schemes for capture and spatial tracking: tethered tagging scheme electronic non-contact tagless scheme optical non-contact tagless scheme electronic non-contact tagging scheme

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I/O Bulb Scheme: camera-in and projector-out

I/O Bulb Prototype

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I/O Bulb (cont.) Different size of I/O Bulbs:

large scale small scale medium scale

Ceiling-mounted gimbal (Kardanring) Desk lamp system

Fixed conference

table system

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Outline Introduction Example Applications

Illuminating Light Distributed Illuminating Light Urp(with Seep)

Getting Pixels in and out Display Capture I/O Bulb

Luminous Room Vision Techniques Seeing Spots Software Support: glimpser Toolkits: voodoo and dee-voodoo

Conclusion

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See Spots Object-independent tagging scheme Reliable isolation from unpredictable

background. Dots self-luminous? LEDs? Maxim: objects used by Luminous Room

applications should be passive. Retroreflective dots: 3M ScotchLite

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Outline Introduction Example Applications

Illuminating Light Distributed Illuminating Light Urp(with Seep)

Getting Pixels in and out Display Capture I/O Bulb

Luminous Room Vision Techniques Seeing Spots Software Support: glimpser Toolkits: voodoo and dee-voodoo

Conclusion

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Software Support: glimpser

low-level vision technique: identifies colored dots in its input finder: locate a specific-sized region of some particular color.

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Geometric parsing toolkit: voodoo voodoo analyzes each unorganized per-frame collection of

color dots into a list of unique patterns. Two parameters:1. the distance between each pair of dots

2. the angle through each triplet, along with the dots’ color sequence

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Toolkit: dee-voodoo

I/OBulb A

I/OBulb B

dee-voodoo dee-voodoo-------TCP/IP--------

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Conclusion the Luminous Room

Getting Pixels in and out: Display & Capture, I/O Bulb Luminous Room Vision Techniques : color-dot patterns Software Support: glimpser, toolkits: voodoo and dee-voodoo Example Applications: Illuminating Light, Distributed Illuminating

Light, Urp

future improvements Increasing the resolution of the I/O Bulb Minimizing the ambiguity of the real and virtual objects Extension to 3D

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http://tangible.media.mit.edu/projects/iobrush/

Bonus Video