Showcase IV
           
Event Type Start Time End Time Rm # Chair  

 

SC Global, Showcase 3:30PM 3:45PM 6-10 Jennifer Teig von Hoffman (Boston University)
 
Title:

Contextual Backgrounds: AG on the Beach
  Speakers/Presenter:
Darran Edmundson (ANU Supercomputer Facility Vizlab)

 

SC Global, Showcase 3:45PM 4:30PM 6-10 Jennifer Teig von Hoffman (Boston University)
 
Title:

Karaoke Grid - Transpacific Synergistic Entertainment
  Speakers/Presenter:
Kazuyuki Shudo (National Institute of Advanced Industrial Science and Technology (AIST), Japan)

 

SC Global, Showcase 4:30PM 5:00PM 6-10 Jennifer Teig von Hoffman (Boston University)
 
Title:

Closing Comments, SC Global Chair
  Speakers/Presenter:
Jennifer Teig von Hoffman (Boston University)
             

 

     
  Session: Showcase IV
  Title: Contextual Backgrounds: AG on the Beach
  Chair: Jennifer Teig von Hoffman (Boston University)
  Time: Thursday, November 20, 3:30PM - 3:45PM
  Rm #: 6-10
  Speaker(s)/Author(s):  
  Darran Edmundson (ANU Supercomputer Facility Vizlab)
   
  Description:
  Green and blue screen compositing is widely used in television and film to merge foreground actors with background scenes. A classic example is the television weather report in which the otherwise information-less pixels surrounding the reporter's "talking head" are replaced by real data in the form of weather maps and images. The Access Grid, with wall display real-estate being a precious commodity, is particularly well suited to this technique. Users can be combined with their data in meaningful ways to aid understanding for remote viewers. Additionally, with multiple cameras in play, replacing each camera's background with a perspective-correct view of the virtual background helps to unify the otherwise disjoint streams coming from a node.



Fair enough, so why not paint one's Access Grid green and be done with it? Because while the end result is compelling, green screen studios are not at all pleasant environments. They require large sets to minimize color spill from the screen onto the actors plus highly-controlled lighting to ensure even screen color for automated keying. In contrast, the Access Grid - where the distinction between participant and viewer is highly blurred - needs to be a comfortable space conducive to multi-way communication. (Regardless, our small 6m x 4.5m retrofitted room precluded any thought of traditional green screening).



By covering the walls of our AG Node with a 3M retroreflective material and placing rings of illuminating green LEDs around our camera lenses, viewers at other nodes perceive brilliant green backgrounds in all outgoing video streams. (Users in the node itself perceive the walls to have a shimmering blue color.) However, prior to transmitting, we use software and hardware to remove the chroma green and, as we know the current position and orientation of the camera lense, composite camera-correct background images into the outgoing video stream. The result, at least for viewers at other nodes, is that our node participants appear embedded in a virtual world of our choosing. Allowing remote operation of our pan/tilt cameras helps to complete the illusion. In this showcase we demonstrate the technology with both scientific user background data and the more contrived example alluded to in the showcase title - namely, our node attendees in landlocked Canberra placed on a beautiful Australian beach.



A Windows Media Stream archive of this session is available at mms://winmedia.internet2.edu/VB-on-Demand/AGBeach.asf. It is recommended that this file be viewed using Windows Media Player version 9.
  Link: --
   

 

     
  Session: Showcase IV
  Title: Karaoke Grid - Transpacific Synergistic Entertainment
  Chair: Jennifer Teig von Hoffman (Boston University)
  Time: Thursday, November 20, 3:45PM - 4:30PM
  Rm #: 6-10
  Speaker(s)/Author(s):  
  Kazuyuki Shudo (National Institute of Advanced Industrial Science and Technology (AIST), Japan)
   
  Description:
  The mode of entertainment has not taken place before with the Access Grid technology. We explore an informal entertainment use of the technology and future requirements for the use will become clear.



The Karaoke Grid is assembled technologies configured to produce virtual karaoke rooms on the Grid. Karaoke Grid nodes combine from all over the city, the country, and the world to form virtual Karaoke rooms. Karaoke is a good way for people to learn about and become closer to each other. When combined with Grid technology, this mode of entertainment is expected to break through the boundaries of distance and provide an opportunity to meet others. This is a joint effort between XING Inc, a leading karaoke service provider; AIST, and Waseda University.



Challenges: Those countries have very different cultures from each other and their attitudes toward the entertainment are also divergent. It is a social and cultural challenge to share the mode of entertainment. Of course, other participants are welcome. Bandwidth of transpacific Internet lines are relatively narrow compared with U.S. domestic lines. Audio latency exists due to natural and artificial causes: distance (light speed is limited) and buffering to tolerate packet transmission jitter. And further, lines between Asia-Pacific countries are not good as domestic lines. SC Global can be one of precious opportunities to evaluate the current state of Internet of this region. The real obstacle to entertainment uses will be latency due to a long distance between Asia and U.S.



A Windows Media Stream archive of this session is available at mms://winmedia.internet2.edu/VB-on-Demand/KaraokeGrid.asf. It is recommended that this file be viewed using Windows Media Player version 9.
  Link: --
   

 

     
  Session: Showcase IV
  Title: Closing Comments, SC Global Chair
  Chair: Jennifer Teig von Hoffman (Boston University)
  Time: Thursday, November 20, 4:30PM - 5:00PM
  Rm #: 6-10
  Speaker(s)/Author(s):  
  Jennifer Teig von Hoffman (Boston University)
   
  Description:
  A summary of this year's SC Global conference, including information about participating sites, and the technical and production infrastructure that supported them.



A Windows Media Stream archive of this session is available at mms://winmedia.internet2.edu/VB-on-Demand/KaraokeGrid.asf; these closing comments are included at the end of the Karaoke Grid session. It is recommended that this file be viewed using Windows Media Player version 9.
  Link: --