1 an interactive autostereoscopic display using a holographic optical element jonny gustafsson,...

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An Interactive Autostereoscopic Display

Using a Holographic Optical Element

Jonny Gustafsson, Christoffer Lindfors,Lars Mattsson, Torsten Kjellberg

Dept. of Production Engineering, KTH

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An Interactive Autostereoscopic Display

Using a Holographic Optical Element

• No glasses or other viewing aides.• Uses a holographic optical element (HOE)

as a projection screen for number of digital projectors.

• Access to the image.

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Purpose

• To be used by a small group of people discussing or demonstrating digital 3D models

• Allows normal eye contact between the users

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”Virtual Reality?”

• In some cases it is more useful to bring virtual objects to the real world than to enter a virtual world.

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Characteristics

• A small group of viewers (3 – 4) should see the image simultaneously

• Objects in the image can be moved interactively

• Haptic interaction is being adapted to the display

• Monochrome images (color is possible)• Good contrast• Sharp images.• Very bright – no need to dim the lights in

the room.• Scalable

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Applications

• Product design and development• Military command• Medical imaging• City planning• Surveying• Scientific visualization• Chemistry• Games and entertainment• Education and information

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Contrast Measurement

Detector

Viewing slit

HOE

Bright square

S N

S/N~100

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Crosstalk Measurement

S CC/S ~ 0.7%

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Specs

• Display area 80 cm x 60 cm• Angle of View >100o

• Color: monochrome, red• Contrast: > 90:1 (limited

by projectors)

• Crosstalk betweenperspective views: 0.7 %

• Number of pixels XGA (1024 x 768)

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Main sponsor:VINNOVA

Support from:Volvo CarsSCASilicon GraphicsOpticore