Newsgroups: comp.sys.amiga.graphics
Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!zaphod.mps.ohio-state.edu!sol.ctr.columbia.edu!cunixf.cc.columbia.edu!cunixb.cc.columbia.edu!es1
From: es1@cunixb.cc.columbia.edu (Ethan Solomita)
Subject: Re: DCTV
Message-ID: <1991Apr20.200706.24406@cunixf.cc.columbia.edu>
Sender: usenet@cunixf.cc.columbia.edu (The Network News)
Nntp-Posting-Host: cunixb.cc.columbia.edu
Reply-To: es1@cunixb.cc.columbia.edu (Ethan Solomita)
Organization: Columbia University
References: <patrick_meloy.5615@outbound.wimsey.bc.ca>
Date: Sat, 20 Apr 1991 20:07:06 GMT

In article <patrick_meloy.5615@outbound.wimsey.bc.ca> patrick_meloy@outbound.wimsey.bc.ca (Patrick Meloy) writes:
>
>Well, consider this. The toaster output I work with is the 768x482 (non full
>size image). That gives a total maximum number of colours of 370,176 on
>screen. What is to keep them from just saving THAT data to the 300k file and
>tossing the rest of the information that is not used? Or, could they be doing
>something sneaky and actually do a compression on the file? I can Lharc up
>files and save as much as 95% on space. Couldn't that be done with a 24 bit
>pic too?
>
	370K colors is about 18 bit, so you save 1/4 space if
that was done. Also, try lharcing an IFF. You save very little
space, on the order of 10%. It is text files that really compress
well.

>Find a Toaster, Render a pic, load it into DCTV and save as display file. Then
>reverse the process and look at the pic on the same toaster and compare it to
>the original file. THEN tell me I'm dreaming :)
>
	Yes, because the Toaster is outputting NTSC and the DCTV
is outputting almost NTSC. Compare the DCTV image to an RGB 24
bit framebuffer and you'll see the difference.
	DCTV is very good for video work, but comparing it to a
24 bit frame buffer just isn't accurate.

>---------------------------------------
>| patrick_meloy@outbound.wimsey.bc.ca |
>| 'The Outbound' BBS Vancouver BC     |
>---------------------------------------


	-- Ethan

Q: How many Comp Sci majors does it take to change a lightbulb
A: None. It's a hardware problem.
