Subject: Autostereographic Displays

From: "Frank Marchese" <[email-masked]>
Date: Thu, 3 Apr 2003 11:02:31 -0500

Hi All,

This autostereographic technology is sold by a number of companies:

Dynamic Digital Depth
http://www.ddd.com/index.asp

Stereographics
http://www.stereographics.com/products/synthagram/synthagram.htm

Dimension Technologies, Inc.
http://www.dti3d.com/products.asp

4d Vision
http://www.4d-vision.de

SeeReal Technologies
http://www.seereal.com/EN/products.en.htm

Autostereo technology works by slicing multiple images vertically into individual bands and interleaving these bands into a final image. This image is viewed through a lentiule so that each eye only sees one set of bands.

Here are some questions you may want to ask about the technology:

1. Does the display work both as a standard 2D display and 3D display? 
For example, SeeReal Technologies only works in 3D.

2. What video cards are needed to support the display?

3. Is the technology plug-and-play and does it work in real-time?
Some autostereo displays use standard stereo-pairs, i.e. two perspective views, one for each eye (e.g. SeeReal Technologies). They are compatible with existing stereographic applications. For example, according to the SeeReal website, their LCD display works with Accelerys Viewer Pro. It also seems that if the software supports stereo shutter glasses via OpenGL , then it should work with any molecular graphics program that does so, such as VMD, Pymol, Cache, etc. 

Other systems require more than two views: 4D-Vision (8 views) and StereoGraphics (9 views). These systems allow for looking around objects and for multiple users. The downsides are:
a. lack of compatibility with existing stereo-content
b. need of multiple cameras: 7 to 9 cameras (virtual or real) 
c. not real-time, because the the images from each view are preprocessed be interleaved into a final picture; then are show 
using a viewer.

SeeReal's technology obviates these problems by using eye tracking technology. As the viewer moves in front of the screen, an eye tracker mounted atop the display keeps track of eye positions, the software then updates the image for the current viewer location, essentially by sliding the bands into the correct viewing position. The possible downside to this technology is that it is correct for only one viewer. 

4. How much detail can you afford to lose?
Interleaving of images means fewer pixels per view. For example, interleaving two images to fit on a 1280x1024 display means that each image is 640x1024. Using more  images means further degredation of detail. Yet resolution is increasing. Some of the newer autostereo LCD display systems work at 1600x1200. 

Finally, both the Stereographics and SeeReal website give good descriptions of the technology. Here are some interesting websites and papers:
http://atwww.hhi.de/~blick/3-D_Display/3-d_display.html
http://www.evl.uic.edu/paper/pdf/autostereography.pdf
http://www.mrl.nyu.edu/publications/autostereo/spie2001.pdf

At this moment in time, no stereo 3D technology is perfect, but it is fun to play with the all the technology.

Have Fun!

Dr. Francis T. Marchese
Professor
Dept. of Computer Science
Pace University
NY, NY 10038

---------- Original Message ----------------------------------
From: [email-masked]
Date:  Thu, 3 Apr 2003 08:41:38 +0000

>Hi,
>You might want to take a look at http://www.dresden3d.com too.
>Kind regards,
>Richard.
>___________________________
>
>Mr Richard Compton
>Regional Director
>Accelrys Ltd.
>334 Cambridge Science Park
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>
>"Mark Thompson" <[email-masked]>
>Sent by: "Computational Chemistry List" <[email-masked]>
>02/04/2003 14:16
> 
>        To:     "Konstantin Kudin" <[email-masked]>, 
><[email-masked]>, <[email-masked]>
>        cc: 
>        Subject:        CCL:Report from the ACS in New Orleans
>
>
>Konstantin,
>
>The company was Dynamic Digital Depth Inc  (www.ddd.com)
>The DDD VP that was at the booth was Robert Mannino ([email-masked])
>
>Mark
>
>=================================
>Mark Thompson, Ph.D.
>Planaria Software
>PO Box 55207
>Seattle, WA  98155
>
>http://www.arguslab.com
>FAX: 206-440-3305
>=================================
>
>> -----Original Message-----
>> From: Computational Chemistry List [mailto:[email-masked]]On
>> Behalf Of Konstantin Kudin
>> Sent: Tuesday, April 01, 2003 1:58 PM
>> To: [email-masked]; [email-masked]
>> Subject: CCL:Report from the ACS in New Orleans
>> 
>> 
>>  Dear colleagues
>> 
>>  I'd like to find out what was the company that
>> presented the 3D technology described below.
>> 
>>  I stopped by at the same booth, and was quite
>> impressed by the demo they had. They showed a clip
>> converted into a pseudo-3D from flat images and it
>> looked not as good as true 3D but better than 2D.
>> The modelling part was good too.
>> 
>>  I talked to the presenter briefly, and he mentioned
>> that he actually was from a different company (not
>> Fujitsu). Unfortunately, I did not write down the
>> name, and can't remember what the company was.
>> 
>>  Anybody remembers/knows what was the company with
>> that 3D technology?
>> 
>>  Thanks!
>> 
>>  Konstantin
>> 
>> > ---------- Forwarded message ----------
>> > Date: Fri, 28 Mar 2003 13:02:57 +0000
>> > From: "Rzepa, Henry" <[email-masked]>
>> > To: [email-masked]
>> > Subject: Report from the ACS in New Orleans
>> > 
>> > Its been a few years since  I did one of these
>> > reports from an ACS
>> > meeting,  but one item in particular caught my  (and
>> > a lot of other ) eyes.
>> > 
>> > CAChe were displaying  LCD panel monitors which
>> > display true 3D images
>> > WITHOUT any need for glasses. The technology
>> > apparently comes in four
>> > flavours, each vying for market, which is a good
>> > omen for costs, which are
>> > expected to come spiraling down over the next  12
>> > months.
>> > 
>> > The largest display is a  40" (@$17,000),  a 20"  (@
>> > around $8000) and most
>> > interestingly, a  laptop to be released later this
>> > year. The effects were remarkable,
>> > although the depth of stereo vision is probably not
>> > (yet) as impressive as dedicated
>> > Crystaleyes systems
>> > 
>> > Currently, it does need software drivers  (openGL)
>> > and so specific software
>> > must be enabled.  The CAChe software is so, and  I
>> > gather a  Powerpoint
>> > enabled  3D display is on the cards;  I argued for
>> > enabling the Weh browser,
>> > perhaps  Mozilla/Netscape will do it?
>> > 
>> > >From what we saw, and with the predictions, it does
>> > seem that any serious
>> > molecular modeller or anyone interested in the  3D
>> > properties of molecules
>> > will be buying themselves these  3D LCD panels
>> > routinely in a years time
>> > or so!
>> > 
>> > Apparently,  a demonstration might be on the cards
>> > at  Heathrow Airport on April
>> > 24.  Anyone who is seriously interested in attending
>> > should contact
>> > Magda Karabon for free registration at + 48 12 429
>> > 43 45 or <mailto:[email-masked]>[email-masked]
>> > -- 
>> > 
>> > Henry Rzepa.
>> > +44 (0870) 132 3747 (eFax)
>> >  http://www.ch.ic.ac.uk/rzepa/ Dept. Chemistry,
>> > Imperial College London, SW7  2AZ, UK.
>> > 
>> > 
>> > chemweb: A list for Chemical Applications of the
>> > Internet.
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>> > To (un)subscribe, mailto:[email-masked] the
>> > following message;
>> > (un)subscribe chemweb
>> > List coordinator, Henry Rzepa
>> > (mailto:[email-masked])
>> > 
>> > 
>> > 
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