CGIntroAndHardware_0d

7/30/2019 CGIntroAndHardware_0d

1/16

August 1, 2012

Organic LED Arrays

Organic Light-EmittingDiode (OLED) Arrays

The display of the future?

OLED are:

Transparent Flexible

Light-emitting, and quite

bright (daylight visible)

Large viewing angle

Fast (< 1 microsecond

off-on-off) Can be made large or

small

Available for cell phones

and car stereos

Hardware IV Computer Graphics

1

(Display Technologies and Devices)


2/16

FED:

Field Emissive Displays were once heir to CRT throne

Super-small emitters of electrons attracted to frontglass

Super-fine pixel pitch (comparable to OLEDs) High brightness,

wide viewing angles,

saturated color

August 1, 2012

FEDs use an array of carbon nanotubes for emission of electrons


2


3/16

August 1, 2012

SED uses an emitter array based on palladium oxide

SED(Surface-conduction Electron-emitter Display)


3


4/16

iMod:

Interferometric Modulator uses natural

reflective principles (interferometer)

Two-position pixel reflects or absorbs light

RGB stripes are used for color imaging

Initial target is handheld electronics, near-

to-eye

Marketed in May 2008 for mobile displays

August 1, 2012


4


5/16


6/16

Portable, flexible, reusable, light-weight, non-backlit

Slow for animations

Wider viewing angle

Used in e-books

Video

August 1, 2012

Electronic Paper


6
http://localhost/var/www/apps/conversion/releases/20121120192253/tmp/scratch_4/flicflex%20concept.WMVhttp://localhost/var/www/apps/conversion/releases/20121120192253/tmp/scratch_4/flicflex%20concept.WMV


7/16

Surface looks like surface of a table

No mouse or keyboard, just fingers moving andtouching on the surface

Surface recognizes camera, mobile, etc.

File transfer from one device to another with just theflick of a finger

Touch animations and multimedia handling

Video

August 1, 2012

Microsoft Surface Technology


7
http://localhost/var/www/apps/conversion/releases/20121120192253/tmp/scratch_4/MSSurface.mp4http://localhost/var/www/apps/conversion/releases/20121120192253/tmp/scratch_4/MSSurface.mp4


8/16

No mouse or keyboard, just fingers moving on thesurface or accepting a particular sign language or

sound Made using different technologies

Used in conferences, stadia and halls

Animations and multimedia handling

Video

August 1, 2012

Wall Display


8
http://localhost/var/www/apps/conversion/releases/20121120192253/tmp/scratch_4/Hybrid%20vision-%20and%20sound-based%20interaction%20on%20display%20walls.WMVhttp://localhost/var/www/apps/conversion/releases/20121120192253/tmp/scratch_4/Hybrid%20vision-%20and%20sound-based%20interaction%20on%20display%20walls.WMV


9/16

August 1, 2012


3D Dislplays With Glasses

Our two eyes see two different images and this produces the3D perception of depth. Two images are produced in thedisplay and we have to wear glasses to see 3D image gettingdifferent images for two eyes.

Active-shutter glasses are actually small LCD screens thatalternately dim the left and right "lenses" in succession. Theyrely on an infrared signal emitter in the TV that tells eachpair of glasses when they should dim each lens, so each eyecan see the image intended for it. Since active-shutter

glasses are fairly complicated electronics, they're pricey: Atypical pair usually runs about $150. They depend on

batteries to keep running Continued ..9


10/16

August 1, 2012


. 3D Dislplays With Glasses

Passive 3D glasses, on the other hand, are sort oflike a pair of specially designed polarized sunglasses.Polarized 3D glasses block different kinds of light fromeach eye, creating the illusion of depth. That means

you don't need any kind of expensive, delicateelectronics in the glasses themselves, nor do you needa proprietary infrared emitter to sync with the glasses--but since each lens is blocking out light, you're

technically not getting a full 1080p image for each eye,though your brain should be perceiving a 1080p imagewhen it puts the two together.

Video

10
http://localhost/var/www/apps/conversion/releases/20121120192253/tmp/scratch_4/3D%20Images--Without%20Glasses!%20_%20PCWorld.flvhttp://localhost/var/www/apps/conversion/releases/20121120192253/tmp/scratch_4/3D%20Images--Without%20Glasses!%20_%20PCWorld.flv


11/16

August 1, 2012


3D Dislplays Without Glasses(Autosetreoscopic)

Among various display technologies , autostereoscopic displays suchas volumetric, lenticular, parallax barrier, integral photography,and hologram displays, present a 3D image to a viewer withoutwearing glasses or other aids. Autostereoscopic systems display manydifferent view images in time or spatially. Among them, lenticulardisplay is easily manufacturable, provides high brightness, andgenerates multiple views.In the lenticular display, the LCD pixel array is located at the focalplane of a lenticular sheet. Lenticules are tiny lenses on the baseside of a special film. Lenticules refract the lights from LCD pixelarray, and make different images observed depending on the viewers

eye position. Since the images viewed from left and right eyes aredifferent, we may generate stereoscopic information or 3D imagedisplay. It interlaces two images. it depends upon the audience being

in a sweet spot to get the 3-D effect. Continued ..

11


12/16

August 1, 2012


.. 3D Dislplays Without Glasses

Video

Aparallax barrier is a device placed in front of an imagesource, such as a liquid crystal display, to allow it to showa stereoscopic image or multiscopic image without the needfor the viewer to wear 3D glasses. Placed in front of thenormal LCD, it consists of a layer of material with a series of

precision slits, allowing each eye to see a different setof pixels, so creating a sense of depth through parallax.A disadvantage of the technology is that the viewer mustbe positioned in a well-defined spot to experience the 3D

effect. Another disadvantage is that the effective horizontalpixel count viewable for each eye is reduced by one half.

12
http://localhost/var/www/apps/conversion/releases/20121120192253/tmp/scratch_4/Future%20of%203D%20-%20YouTube.MP4http://localhost/var/www/apps/conversion/releases/20121120192253/tmp/scratch_4/Future%20of%203D%20-%20YouTube.MP4


13/16

Made using laser technology

3-D display and 3-D Screens

Contains a lot of information

Useful for archiving 3-D objects, advertisements,exhibition of expensive objects

Holographic interactive Computer Screens

3DAvailable in cell phones in a few years time

Video I

Video II

August 1, 2012

Holographic Displays


13
http://localhost/var/www/apps/conversion/releases/20121120192253/tmp/scratch_4/HolographicDisplay.FLVhttp://localhost/var/www/apps/conversion/releases/20121120192253/tmp/scratch_4/Hologram.flvhttp://localhost/var/www/apps/conversion/releases/20121120192253/tmp/scratch_4/Hologram.flvhttp://localhost/var/www/apps/conversion/releases/20121120192253/tmp/scratch_4/HolographicDisplay.FLV


14/16

August 1, 2012

Raster GraphicsMonitors

How to generate aline using rasters

A line isrepresented by

assigning somepixels a value of 1The entire line isspecified by thepixel values


14

Raster and Vector Display


15/16

August 1, 2012

Vector GraphicsPlotters

How to generate

an image usingvectors

A line is represented

by endpoints (50,50)

to (120,150)

The points along theline are computed

using a line equation

y = mx + b


15


16/16

August 1, 2012

Bitmap Images vs Vector Images

Enlarging a bitmap image

simply enlarges the

individual dots of color.

The result is bigger,

chunkier dots, with no

additional detail.

When a vector image is

enlarged, it is re-drawn at a

higher resolution,

displaying as much detailas possible from the

original image.


16

CGIntroAndHardware_0d

Documents

Transcript of CGIntroAndHardware_0d