Re: [MLUG] Followup on WebCam.

[Mark Rages <EMAIL:PROTECTED>]

On Sun, 12 Dec 2004 15:44:12 -0600, Christian M. Cepel
<EMAIL:PROTECTED> wrote:
> http://HamsterCam.bramblethorne.org/
> 
> Its been live for about a week, and underwent the normal few days of
> shakedown for any new gadget.  Its proving popular with the 'hamster
> community' :)
> 
> Hardware:
> Ended up getting a Logitech Messenger IM cam.  Not really happy with it,
> but considering I bought the $20 off brand and then had to return it and
> came home with something with true 640x480 CMOS 30fps, I guess I didn't
> do too badly.  The one thing I cannot figure out is why if it takes at
> 640x480 CMOS TRUE, why I'm seeing macropixeling in an uncompressed
> image.  Here's the thing.  I would expect 640x480 distinct pixels, but I
> do not expect them to be grouped  and aliased into little blocks of 64
> pixels, 8 per side.  Here's what I mean.

I believe JPEG compression uses 8x8 blocks.  That is a typical
artifact of over-compression or a lousy encoder.

Regards,
Mark
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