POV-Ray : Newsgroups : povray.binaries.images : Help with JPEG conversion Server Time
18 Aug 2024 16:14:56 EDT (-0400)
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From: Eric Freeman
Subject: Re: Help with JPEG conversion
Date: 27 Aug 2000 16:27:52
Message: <39a979c8$1@news.povray.org>
"Bob Hughes" <per### [at] aolcom?subject=PoV-News:> wrote in message
news:39a6e4eb@news.povray.org...
>
> Wow!  And I say again, wow!
> Did you realize this JPG is only 18.1 K compared to
> that other one of 31.4 K?!
> I'm stunned at the quality and file size you obtained
> using that program.

I use Corel PhotoPaint 8 and have been using it since version 3.  Older
versions (5 or 6) are usually available for $50 or less.  I compressed the
png down to 12k without noticeable artifacts.

--
Eric
--------------------
http://www.datasync.com/~ericfree
--------------------
"I don't like it, and I'm sorry I ever had anything to do with it."
- Erwin Schrodinger talking about Quantum Mechanics.


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From: Jérôme Berger
Subject: Re: Help with JPEG conversion
Date: 28 Aug 2000 07:48:54
Message: <39AA51A6.46F7765F@enst.fr>
Fabien Mosen wrote:
> 
> In general, you might want to avoid such pure tones, as it JPG badly,
> and, anyway, it's harsh, even without the compression problems.
> 
> That said, there is a solution to your problem : you must ensure that
> your conversion program does 1x1x1 subsampling in JPG conversion.
> PSP is unable to do that.  If you're not afraid of using a DOS-based
> program, I recommend "SEA" which you can get from www.photodex.com
> (shareware with GUI, stopped developpement :-(( ).
> 
	I think that the latest version of the gimp (1.1.x) allows it. Go to
http://www.gimp.org for more info (or
http://user.sgic.fi/~tml/gimp/win32/ if you're running windows)


-- 

* Doctor Jekyll had something * mailto:ber### [at] inamecom
* to Hyde...                  * http://www.enst.fr/~jberger
*******************************


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From: Greg M  Johnson
Subject: Re: Help with JPEG conversion
Date: 30 Aug 2000 14:48:22
Message: <39AD55C1.AD5B43FD@my-dejanews.com>
Also red sucks for distortion in JPG compression wrt/ blue & green.....

Kevin Jackson-Mead wrote:

>  Does the distortion I'm getting have to do
> with that?  If so, is there something in the conversion settings that I
> can change (I set the compression to its lowest possible value)?  Or do
> I need to change the scene around?


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