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From: rjc@wookumz.gnu.ai.mit.edu (Ray Cromwell)
Newsgroups: comp.sys.amiga.advocacy
Subject: Re: CDTV News
Message-ID: <1991Jun15.025015.13046@mintaka.lcs.mit.edu>
Date: 15 Jun 91 02:50:15 GMT
References: <1991Jun12.205030.4401@news.iastate.edu> <1991Jun14.125339.18489@NCoast.ORG> <1991Jun14.214105.1414@ncsu.edu>
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In article <1991Jun14.214105.1414@ncsu.edu> kdarling@hobbes.catt.ncsu.edu (Kevin Darling) writes:
>They are decoded and displayed on whatever video hardware the computer has
>available.  And MB is irrefutably correct that stock CDTV is hardly the best
>platform for that.  Bad enough for color and fleshtones, but also consider
>B&W photographs... and then think about the limited greyscale of stock CDTV.

  Well, if CDTV is "inadequate" for fleshtones and B&W, so is CD-I.
I have plenty of IFF and GIFs of people and I don't see anything
wrong with them. They aren't as good as a 35mm photo, but 
neither is CD-I or any composite picture you could come up with.
CD-I has more colors but the resolution is blurry. DYUV also has 
problems with the blue shades bleeding. DYUV is suited for moving
pictures, not stills. For a still picture you want high-resolution
and vibrant, clear colors otherwise the human visual system will
start to pick out all the little annoying details like pixelization,
color bleeding/banding, etc.

 The Amiga chipset can produce superb results depending on the
Image processing software used and the quality of the original
picture.

Neither CDTV nor CD-I are suited for displaying high quality stills.
 
>> I have not heard of CD-I even saying they intend to support this.
>> Have you heard something I haven't?
>
>Yes :-)  Quoted from the Kodak press release NINE months ago:
>
> "The Photo CDs will also produce high quality photographic display
>  on Philips' new Compact Disc Interactive (CD-I) players."

  Assuming CD-I gets a revised chipset. NTSC can hardly be considered
"high quality" when compared to 24-bit megapixel. By the time 
CD-I and Koak's system hits the market CDTV could already have the DCTV
set which lets you rival CD-I's image quality.

>Moreover, Philips and Sony hold the main patents on CDROM technology.
>(That's why we even have a standard cdrom layout in the first place.)
>In other words, Kodak and Philips were partners in creating Photo-CD...
>and Philips will be building the first dedicated Photo-CD players.

 Hmm, until HDTV comes along I think I'd rather have a 35mm photo for
family memories instead of a blurry picture displayed on a TV screen.

>Hope the info helped.  - kevin <kdarling@catt.ncsu.edu>


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