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Re: pixelvision concept (fwd)
Forwarded message:
> From buescher@srv.net Fri Jun 27 12:32:21 1997
> Date: Fri, 27 Jun 1997 13:38:02 -0600
> Message-Id: <199706271938.NAA00260@caligula.srv.net>
> From: "Brent Buescher, Jr." <buesch@srv.net>
> To: "Alexander the Great jr." <kanaris@bode.usc.edu>
> Cc: pixelvision@jupiter.rowan.edu
> Subject: Re: pixelvision concept
> In-Reply-To: <199706271903.MAA23388@bode.usc.edu>
> References: <199706271903.MAA23388@bode.usc.edu>
> Reply-To: buesch@srv.net
>
> It could easily be as few as 4. Pixelvision imagery looks strikingly
> similar to (but finer than) the 2-bit (four level) 160x200 stills I
> can take with my computereyes "frame grabber" on my Atari 800XL.
If someone is patient enough he could count the number of gray levels
in the picture and make a determination.
> Come to think of it, a pixelizing frame grabber for PCs would be an
> even better toy than a "pixel box".
A frame grabber? Like "Snappy"?
You can pixelize and quantize a single frame all you want with software
like Lview. Or you can apply software filters to a captured video and
get PXL-like results.
> Never seen Trellis coding, and the nearest DSP text to me doesn't
> mention it. Is it an analog signal compression technique?
It is a way to compress digital signals for transmission through analog
channels. Prime application today: Modems to connect your computer
to the phone line.
> Is the encoding of pixelvision digital or analog?
It is a Hybrid, from what I know so far.
<<alex kanaris>>
==============================================================================
Alexander Kanaris ___ ___ kanaris@bode.usc.edu
Electrical Engineering --- Systems / / /__ / kanaris@thales.usc.edu
University of Southern California /__/ ___/ /__ kanaris@aludra.usc.edu
Los Angeles, California 90089-2562 kanaris@alumni.caltech.edu
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