[AG-TECH] Strange question

[Rick Stevens]

There are no cheap cameras today that support 1024x768 resolution.

The best that we can do with the current AG framework is to use higher 
resolution CODECs that
would give you roughly 640x 480 (NTSC) resolution.



At 04:27 PM 12/5/2001 -0500, Gurcharan S. Khanna wrote:
>hi,
>
>i agree completely with Tom; using video for things that can be displayed
>full screen on a computer will only reduce the quality drastically (at least
>using current video technology as in the AG node).
>
>there are white boards that translate what is written on them to digitized
>input for a computer to use with NetMeeting or the like; one source is
>mimio.com.
>
>also, slides or pictures should be digitized and then used with vnc, a web
>browser, or any other desktop app that can display full screen graphics.
>
>hope this helps,
>
>-gurcharan
>
>===========================
>Gurcharan S. Khanna
>Associate Director
>Research Computing
>6224 Baker/Berry
>Dartmouth College
>Hanover, NH 03755
>gkhanna at dartmouth.edu
>office: 603-646-1644
>fax: 603-646-1042
>http://research.dartmouth.edu
>http://www.dartmouth.edu/~rc
>http://www.dartmouth.edu/~gkhanna
>
>--- Tom Coffin wrote:
>
>Supreeya,
>
>I recommend not to use a camera to point at the white board.
>The resolution will never be satisfactory and the professors
>will go insane. Ofcouse if the class happens to be a psychology
>class then it may be desirable...
>
>good luck
>
>_________________________________________________
>At 02:25 PM 12/5/2001 -0600, Supreeya Miller wrote:
>    >
>    >Thank you, Tom.
>    >
>    >USM wants to use 1 camera to point to the professor, another camera to
>point
>    >on the white board that he writes on, another camera for pictures or
>slides
>    >that he may have, and another camera to point to the students at USM.  So
>    >there will be no desktop sharing on the computer at USM.
>    >
>    >Supreeya Miller
>    >System Administrator/Visualization Researcher/Access Grid Coordinator
>    >High Performance Visualization Center
>    >Center of Higher Learning
>    >Building 1103
>    >Stennis Space Center, MS  39539
>    >Phone: 228-688-2190
>    >Fax:   228-688-7454
>    >E-mail:Supreeya.Miller at usm.edu
>    >
>    >-----Original Message-----
>    >From: Tom Coffin [mailto:tcoffin at ncsa.uiuc.edu]
>    >Sent: Wednesday, December 05, 2001 2:10 PM
>    >To: Supreeya Miller; ACCESS community
>    >Subject: Re: [AG-TECH] Strange question
>    >
>    >
>    >hi Supreeya
>    >You can use VNC to shared a 1024x768 desktop
>    >which can include a white board...
>    >http://www.uk.research.att.com/vnc/
>    >
>    >
>    >At 02:05 PM 12/5/2001 -0600, Supreeya Miller wrote:
>    >   >All,
>    >   >
>    >   >We have a lot of people come to our center and some of them are
>    >professors.
>    >   >I'm also in the process of building the second Access Grid Node for
>USM
>    >   >(university of Southern Mississippi).  When the node is done, there
>    >will be
>    >   >a lot of class activities between CHL (at Stennis) and USM.  The
>    >professors
>    >   >that came and visited our center have some concerns that the
>resolution
>    >of
>    >   >the images on the Access Grid is not high enough for them, and
>there are
>    >   >some jaggy problems due to many hops and points in the network 
> that we
>    >have
>    >   >to go through (details are below).  When I did the full size image,
>they
>    >   >were not satisfied even more (they could see pixels change clearly).
>    >One of
>    >   >the professors has asked me a question, which I don't know how to
>    >answer.
>    >   >He wants to do a distance learning by point-to-point (between CHL and
>    >USM)
>    >   >using the Access Grid equipment.  He wants (to start with) 2 windows,
>    >each
>    >   >with 1024x768 resolution.  So that they can write on the white board,
>    >and
>    >   >the distance students (at CHL) can see everything perfectly clear
>(they
>    >   >refuse to use Power Point Presentation files).
>    >   >
>    >   >Our network details
>    >   >        CHL -> uses DS3 to -> JACKSON -> uses OC3 to -> USM -> 
> uses OC3 to ->
>    >   >JACKSON -> uses OC3 to -> Internet2
>    >   >        CHL -> JACKSON -> USM -> Internet
>    >   >        Our router is at USM that is why we have to go to USM 
> first for both
>    >   >Internet2 and commodity Internet.
>    >   >
>    >   >I've looked at the Microsoft NetMeeting.  But that is one computer
>that
>    >does
>    >   >video and audio.  We have 4 computers, and 2 computers are running
>    >Linux as
>    >   >we know.
>    >   >I've also looked at VRVS.  But that does not even need Internet 2 (if
>    >I'm
>    >   >wrong, please correct me).  He wants to fully utilize the 
> bandwidth of
>    >   >Internet 2, in this case we mean DS3 bandwidth (50 Mb)
>    >   >
>    >   >How possible can this "point-to-point distance learning using Access
>    >Grid
>    >   >equipment" be done and how can I go about doing it?
>    >   >
>    >   >I thank you in advance for any help.
>    >   >
>    >   >Supreeya Miller
>    >   >System Administrator/Visualization Researcher/Access Grid Coordinator
>    >   >High Performance Visualization Center
>    >   >Center of Higher Learning
>    >   >Building 1103
>    >   >Stennis Space Center, MS  39539
>    >   >Phone: 228-688-2190
>    >   >Fax:   228-688-7454
>    >   >E-mail:Supreeya.Miller at usm.edu
>    >   >
>    >   >
>    >
>    >
>    >___________________________________________________________
>    >Tom Coffin .......................... tcoffin at ncsa.uiuc.edu
>    >
>    >
>
>
>___________________________________________________________
>Tom Coffin .......................... tcoffin at ncsa.uiuc.edu
>--- end of quote ---