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BRINGING 3D TO
SMALL SCREEN
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Sachin A Saj
Roll no: 51
S7 EEE
Presented by
OVERVIEW INTRODUCTION
DEMAND FOR MOBILE 3D
REQUIREMENTS FOR 3D DISPLAY
3D DISPLAY METHODS
LENS DESIGN
3D GAMES
LIMITATIONS
CONCLUSION
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1.INTRODUCTION A recent trend in technology is delivering 3D to the
mainstream users via TV's , PCs , Smartphone's and game consoles
The technology makes it possible to present 3D images suited to mobile environments, and gives the observer the perception that they are actually holding real objects their hand
while comparing 3D’s in TV’s and cinema we emphasis on 3D display technology in mobiles using high density directional images method...
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Viewer doesn’t have to wear 3D glasses to see
natural looking 3D images
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2.DEMAND FOR MOBILE 3D
The 3D could enhance the playing experience.
Sharing videos and photos with friends ranked in the top three uses of 3D cell phones in a recent survey conducted in Japan.
The ability to view movies and video content shared by users is also increasing 3D mobile device adoption
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Also studios are developing 3D movies for mobile devices
This approach could work with hospitality services that
show 3D views of hotel rooms and amenities
It could also work with navigational assistance by
superimposed, high lightened 3D path through a city or
building
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3.Requirements of 3D display for
mobile environment
The phenomena of the changing appearance of a 3D
objects when viewed from different positions is known as
“motion parallax” and is one of the main factors that
enables us to see 3D objects..
Motion parallax enables us appreciate texture such as
surface of water or sparkling of jewellery,
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Firstly since mobile devices are usually handheld there are
physical limitations to the size of whole hardware package
Secondly in mobile usage, the viewer is close to the
display and distance and position can be easily changed
Thirdly there is a need to recreate realism and texture of
objects8
CONTD..
4. 3D DISPLAY METHODS
Due to screen size limitations mobile 3D displays must be
compact
The high density directional images display method
displays 3D Images to the viewer by simultaneously
displaying multiple images...
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High density directional images method
This method creates motion parallax , thus enabling the
image to change depending on the angle of the viewers
head or tilt of the display
This is done by attaching lenticular lenses diagonally
across a LCD to achieve high density image in the
horizontal direction
These lenticular lens on the surface of LCD controls the
direction of light emitted from each pixel, causing light to
be visible from certain angles10
CONTD..
High density directional images method11
Since there are multiple pixels behind these lenticular
lenses the viewer sees different images depending on
viewing angles
High density directional image enables detailed image
display for multiple viewpoints separated by 1 degree
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CONTD..
5.MOBILE 3D DISPLAY
PROTOTYPE AND EVALUATION
For the mobile 3D display, we use three 7.2inch,4.5inch,2.5inch sizes for LCD panels, and lenticular lenses designed for these panel specification..
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LENTICULAR LENS DESIGN
The specification for three types of panel used in the
prototypes are shown in table
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In case of the 7.2inch and 4.5inch panels , to achieve
smooth motion parallax , the number of directional images
was set to 30
in case of 2.5inch because of lower number of pixels the
no: of directional images is set to 24
Lenticular lenses were designed according to those
parameter settings
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CONTD..
6.DESIGNED PARAMETERS FOR
3D DISPLAY
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7.DISPLAY PROTOTYPE
17Fig. shows prototyped display to which lenticular lenses are attached
8. 3D GAMES
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9.LIMITATIONS
Transparent and reflection are incorrect
Can create small cracks with depth changes
Black bars on the left and right side of the screen
Can cause much strain to eye
Costlier than conventional 3D methods.
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This display is capable of displaying natural 3D images.
With further subjective experimentation and evaluation
using the prototype displays, we aim to achieve 3D
display more suitable for mobile environments...
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10.EXPECTATIONS
11.CONCLUSION
Since there is a difference in viewing environments and
applications with mobile devices displays compared to
non mobile devices such as TV's and cinema which has
large display area, we design and built prototype 3D
display using the high density directional images.
The prototype display has good compatibility with
existing mobile devices.
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12.REFERENCE
Y.takaki :”thin-type natural three dimensional display with 72 directional images, “proc. Of SPIE ,vol.5664,pp.56-63,jan 2005
Y.kajiki, JH.Yoshikawa and Honda : “3d display “
“3d image conference 1996,pp 108-113..
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QUESTIONS????
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THANK YOU
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