From: QuantumG <qg@biodome.org>
To: Craig Milo Rogers <rogers@isi.edu>
Cc: linux-kernel@vger.kernel.org
Subject: Re: reverse engineering pwcx
Date: Sat, 28 Aug 2004 13:14:16 +1000 [thread overview]
Message-ID: <412FF888.8090307@biodome.org> (raw)
In-Reply-To: <20040828014931.GM24018@isi.edu>
Craig Milo Rogers wrote:
> Hmmm... a poster on Slashdot claims that entropy measurements
>imply that the pwcx code is interpolating rather that truly
>decompressing. Again, that's integer math and table lookups.
>
>
http://www.amazon.com/exec/obidos/tg/detail/-/B00005R098/102-7619892-0201738?v=glance
claims that the Logitech Quickcam Pro 3000 is a "True 640 x 480
resolution video capture" which is now clearly false.
It would appear I have found an answer to my question. The reason
Philips made Nemosoft sign an NDA was not to hide proprietory
information from their competitors. It was to hide the fact that they
were misrepresenting the resolution of their cameras to their
customers. No wonder Nemosoft did not feel right about opening this
module even after the NDA expired, he would be telling the world their
dirty little secret. Of course I'm sure this was common knowledge to
all those people who work in robotics and always demand an uncompressed
stream from the camera.
Trent Waddington
Decompiler maintainer, http://boomerang.sourceforge.net/
next prev parent reply other threads:[~2004-08-28 3:12 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-08-28 0:52 reverse engineering pwcx QuantumG
[not found] ` <20040828012055.GL24018@isi.edu>
[not found] ` <20040828014931.GM24018@isi.edu>
2004-08-28 3:14 ` QuantumG [this message]
2004-08-28 3:35 ` Craig Milo Rogers
2004-08-28 3:49 ` Lee Revell
2004-08-28 12:23 ` Vojtech Pavlik
2004-08-28 19:20 ` Chris Meadors
2004-08-28 3:57 ` QuantumG
2004-08-28 12:07 ` Vojtech Pavlik
2004-08-28 6:47 ` Clem Taylor
2004-08-28 12:23 ` Wouter Van Hemel
-- strict thread matches above, loose matches on Subject: below --
2004-08-28 16:17 Albert Cahalan
2004-08-28 16:25 ` Lee Revell
2004-08-28 16:56 ` Albert Cahalan
2004-08-28 17:11 ` Lee Revell
2004-08-28 18:05 ` Vojtech Pavlik
2004-08-28 17:53 ` Joel Jaeggli
2004-08-28 18:04 ` Lee Revell
2004-08-28 18:08 ` Lee Revell
2004-08-29 21:04 ` Helge Hafting
2004-08-30 7:42 ` Paul Jakma
2004-08-30 12:52 ` Albert Cahalan
2004-08-30 20:23 ` dulle
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