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From: skank@iastate.edu (Skank George L)
Newsgroups: comp.sys.amiga.advocacy,comp.sys.amiga.multimedia
Subject: Re: CDTV News
Message-ID: <1991Jun15.070706.14416@news.iastate.edu>
Date: 15 Jun 91 07:07:06 GMT
References: <1991Jun12.192948.20028@mintaka.lcs.mit.edu> <1991Jun12.205030.4401@news.iastate.edu> <1349@cbmger.UUCP>
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In article <1349@cbmger.UUCP> peterk@cbmger.UUCP (Peter Kittel GERMANY) writes:
>
>Typically Marc. You *must* (you all, not only Marc!) look at those
>pictures found in the World Vista Atlas CDTV title (others tell me
>that also that CD with "New Weapon technology" or similar has
>outstanding images, didn't see them myself until now)!!! Many of
>these pictures are really photo quality. I only saw comparable
>quality in that one Fish disk (was it 196?) with racing cars, a
>honda cycle and an airplane. - This boils down for me that the HAM
>mode of the Amiga still can beat very 256 color VGA plain to the
>ground, if, yes *IF*, you use a VERY GOOD algorithm to convert your
>raw picture into HAM. There must be some black magic with dithering
>and all this. For me, I didn't succeed with such an algorithm, I
>tried, but got always very clear bandings with weird transition
>colors. Funnily, also a few pictures on the mentioned World Vista CD
>show these aliases, but they are really few, compared to all the
>beautiful ones. Now if somebody could teach us a little about the
>magics of HAM algorithms...
>
>-- 
>Best regards, Dr. Peter Kittel  // E-Mail to  \\  Only my personal opinions...>Commodore Frankfurt, Germany  \X/ {uunet|pyramid|rutgers}!cbmvax!cbmger!peterk

     O.K., this is something I've noticed.  The pictures on that particular
Fred Fish disk are absolutely stunning HAM images, and I believe that the
poster even said that NO antialiasing had been performed on the images, even
so, they look AWESOME!  To reiterate Peter's question, "Why is that?"  I've
also noticed that digitizers for the Amiga, like DigiView, seem to generate
much better images than, for instance, .gif files that have been converted.
Is, or isn't, this my imagination?  Assuming it's not my imagination, is this
caused by the substantial differences between HAM mode on the Amiga (with it's
pallet selection or however it works), and .gif-type modes (i.e.: 8
bit-planes) on PC's??  Further, has anyone used TAD or TAD Pro out there?
How well do these programs convert 21+ bit images to HAM?  More bits equals
better conversion doesn't it?  Finally, (this is something I'm really
dieing (sp?) to know the answer to) I know people buy DigiView, so where are
all the great HAM images??

				Questions, questions, questions,

						--George

-- 
George L. Skank			|Five years ago I couldn't spell engineer.  ///
Senior, Electrical Engineering	|Now I are one.				   ///
Iowa State University, Ames, IA	|				      \\\ ///
skank@iastate.edu		|Phone: (515) 233-2165		       \\X//