[AG-TECH] Sharing Handwritten Presentation Slides on AG ?

[Osland, CD (Chris)]

If you mean a full page of 10pt or 12pt, no way!  PAL and NTSC are
miles away from being able to resolve that, let alone PAL/NTSC
after subsampling and compressing by H.261/whatever.

However, almost all
visualizers have a zoom function and with that you can usually
zoom in until the text is legible, but the lines may then be
too long to fit across the screen!  As ever, the slides would
have to be prepared with the medium (in this case resampled
video) in mind.

We use Elmo visualizers (xxx-5500) which are XGA (1024x768)
native resolution cameras, and have an XGA (15 pin) output.
With the right card, you could continuously capture that into
the capture machine, and then use VNC on the resulting image
to get a pixel-for-pixel copy out to others, but I don't know
anyone who has tried it.  That would give you some serious
resolution, albeit that VNC would give you a slowish update
date, but it would settle (after the handwriting had stopped)
quite quickly.

Just a thought

Chris

____________________________________________________________________
Chris Osland                         Office tel: +44 (0) 1235 446565
Digital Media and Access Grid      Medialab tel: +44 (0) 1235 446459
BIT Department             Access Grid room tel: +44 (0) 1235 445666
e-mail:   C.D.Osland at rl.ac.uk               Fax: +44 (0) 1235 445597

CLRC Rutherford Appleton Laboratory (Bldg. R18)
Chilton, DIDCOT, Oxon OX11 0QX, UK

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> -----Original Message-----
> From: William D. Hamblen [mailto:william.d.hamblen at dartmouth.edu]
> Sent: 19 August 2003 15:43
> To: Cindy Sievers
> Cc: abla at fusion.gat.com; ag-tech at mcs.anl.gov
> Subject: Re: [AG-TECH] Sharing Handwritten Presentation Slides on AG ?
> 
> 
> On Mon, 18 Aug 2003, Cindy Sievers wrote:
> 
> > We use a document camera (Canon Visualizer RE-450X) as one 
> of the video
> > inputs.  The speaker/instructor can write slides, notes, 
> etc  and it is
> > transmitted as just another video stream.
> 
> We have a document camera too but I haven't yet gotten around 
> to trying
> what you described.  Is the quality good enough for, say, 10 
> or 12 point
> type?  What resolution does your video capture card run at?
> 
>  - Bill
> 
> --
> William D. Hamblen           email: william.d.hamblen at dartmouth.edu
> UNIX Systems Specialist      phone: (603) 646-1303
> Physics and Astronomy        office: Wilder 306
> Dartmouth College            fax: (603) 646-1446
> 
> 
>