a novel walk through 3d display final

8/7/2019 A NOVEL WALK THROUGH 3D DISPLAY final

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BY

HARISH M (06671A0432)


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INTRODUCTION

What is a 3D Display?

3-D DISPLAY : A display describing the properties of an image

as human eye can recognize the basic parameters of the imageviz. height, width and depth.

Is it necessary of a screen to display an image or a scene ?

No screen is required now as we can project the image in mid-air creating a virtual screen in the atmosphere.


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DISPLAY TECHNOLOGY

Stereoscopic and autostereoscopic displays

Head-mounted displays Volumetric displays

Large translucent displays

Immaterial displays


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STEREOSCOPIC AND

AUTOSTEREOSCOPIC DISPLAYS

Stereoscopic displaysprovide slightly differentimages for the left and righteye.

Tracking of the user is notnecessary but the correctviewing perspective isrestricted, and user-wornglasses are required.

Autostereoscopic displaysrequire no special glasses orother user-worn devices


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HEAD-MOUNTED DISPLAYS

Displays virtual images directly

in front of the users eyes.

Correct point of view for the user.

Different left and right images

for stereo separation effects, but

focal length remains constant

across the entire image.

Collaboration requires each user

wear separate display hardware.


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VOLUMETRIC DISPLAYS

These displays all create their 3D

imagery in a fairly small enclosed

volume that the viewer cannot

enter.

More suited for computer

graphics than video applications.

A real 3D image is generated by

drawing 2D images on a quickly

rotating screen to fill the entire

volume swept out by its path.


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LARGE TRANSLUCENT DISPLAYS

Screens consist of an acrylic

plate that is coated with a

holographic film

Make the screen practically

transparent from the viewers

point of view, showing only

projected objects

Inherent single sidedness


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Screenless 3D display

a dream from star wars movies


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FogScreen technology

-Display image in fog


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WORKING OF FOGSCREEN DISPLAY

FogScreen, an immaterial indoor 2D

projection screen, which enables high-quality

projected images in free space.

Fog Screen creates an image in midair by

employing a large, non-turbulent airflow to

protect the dry fog generated within from

turbulence.

The result is a thin, stable sheet of fog,

sandwiched between two layers of air, on

which an image can be projected and even

walked through.


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PSEUDO 3D EFFECT


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IO2 TECHNOLOGY -

HELIODISPLAY

APPROACHING BY MIRAGEPHENOMENA

The Heliodisplay creates a similar

effect as fogscreen display, but, instead

of fog, it uses a cloud of microscopicparticles.

Mirages are actual meteorological

phenomena created by the refraction

of light through different densities of

air. Normally these different densities

are caused by different temperatures.


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HOW IT WORK?

Air is drawn in

A cloud of microscopic particles is

created

Cloud of microscopic particles is

ejected

so as to create a 3D screen

Digital projector unit illuminates theparticle cloud

creating a visible image


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MERITS : Easily viewed in an office environment.

Heliodisplay images appear 3D, even though in fact, the images

are planar.

Viewing requires no special glasses or background/foreground

screening. It is initiative to HAPTIC technology.

DEMERITS :

Viewing a Heliodisplay image in direct sunlight is almost

impossible.

It is very cost effective.


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APPLICATIONS

Advertising and Promotion

Collaborative Decision Making

Simulation & Training

Consumer

Heads-up displays in new fields

Build the Heliodisplay into furniture


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CONCLUSION

In developing a fully volumetric 3D display, the use of multiple FogScreens

in various configurations to allow images to occupy a tangible physical

volume surrounding the user.

The implemented system enables one to view 3D objects in mid-air andobserve them from almost any angle. Using it as an immaterial, head-

tracked dual-sided display, has led to an enhanced visualization experience.

It creates a strong visual effect of 3D objects floating in air, even when the

image is not stereoscopic.

In improving the sense of presence of virtual objects in the physical world by

integrating haptic feedback into the interface.


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a novel walk through 3d display final

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