POV-Ray : Newsgroups : povray.general : JPEG2000 : Re: JPEG2000 Server Time
3 Aug 2024 16:25:58 EDT (-0400)
  Re: JPEG2000  
From: Thorsten Froehlich
Date: 7 Mar 2004 13:07:44
Message: <404b64f0$1@news.povray.org>
In article <404b53d0@news.povray.org> , Warp <war### [at] tagpovrayorg>  wrote:
>   But JPEG is "broken". It causes files to be larger and have less
> quality than would be necessary. You demonstrably can have smaller
> file sizes with better image quality. Thus JPEG is not optimal
> and thus "broken". A fix has its place.

But JPEG 2000 is not a fix, it is a problem: It fails the fundamental design
goal of any exchange format: Simplicity.  Both JPEG and PNG offer a simple
interchange format, JPEG 2000 is far from simple on the other hand.  That it
offeres better lossy compression, well, that is to be expected from a format
created many years later, isn't it? ;-)

Fact is that JPEG 2000 has nothing really in common with JPEG other than the
group of experts who defined it.  And that it offers "better" lossy
compression, well, lossy is lossy, so it hardly matters for a download if an
image is 10 or 8 KB in size.  On the other hand it does matter if it takes
additional work to view those 8 KB, while viewing the 10 KB image is
possible absolutely everywhere - even on the web browser of a mobile phone,
for example.  The complexity of the JPEG 2000 algorithms and implementation
makes this less feasible at the moment.

Either way, and even if you don't agree with me, there are two facts that
won't change soon:
The web news view vill only support the three standard web image formats
(GIF, PNG and JPEG).
By far most users here do obviously not have software to view JPEG 2000
installed.
Thus, it is not in the interest of anybody here to post in such a format.

Thorsten

PS: Wondering why I post in HTML?  Well, everybody has a web browser and
HTML is widely supported and offers a superior content representation over
plain text, doesn't it? So, obviously we should be using it in these news
groups as well! ;-) ;-) ;-)

----------------------------------------------------------------------------
Thorsten Froehlich, Duisburg, Germany
e-mail: tho### [at] trfde

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